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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal32Type.html">pyarrow.Decimal32Type</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal64Type.html">pyarrow.Decimal64Type</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal128Type.html">pyarrow.Decimal128Type</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal256Type.html">pyarrow.Decimal256Type</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Field.html">pyarrow.Field</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Schema.html">pyarrow.Schema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RunEndEncodedType.html">pyarrow.RunEndEncodedType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BaseExtensionType.html">pyarrow.BaseExtensionType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ExtensionType.html">pyarrow.ExtensionType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UnknownExtensionType.html">pyarrow.UnknownExtensionType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.register_extension_type.html">pyarrow.register_extension_type</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.unregister_extension_type.html">pyarrow.unregister_extension_type</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedShapeTensorType.html">pyarrow.FixedShapeTensorType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.OpaqueType.html">pyarrow.OpaqueType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.JsonType.html">pyarrow.JsonType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UuidType.html">pyarrow.UuidType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Bool8Type.html">pyarrow.Bool8Type</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_boolean.html">pyarrow.types.is_boolean</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_integer.html">pyarrow.types.is_integer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_signed_integer.html">pyarrow.types.is_signed_integer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_unsigned_integer.html">pyarrow.types.is_unsigned_integer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int8.html">pyarrow.types.is_int8</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int16.html">pyarrow.types.is_int16</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int32.html">pyarrow.types.is_int32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int64.html">pyarrow.types.is_int64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint8.html">pyarrow.types.is_uint8</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint16.html">pyarrow.types.is_uint16</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint32.html">pyarrow.types.is_uint32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint64.html">pyarrow.types.is_uint64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_floating.html">pyarrow.types.is_floating</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_float16.html">pyarrow.types.is_float16</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_float32.html">pyarrow.types.is_float32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_float64.html">pyarrow.types.is_float64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_decimal.html">pyarrow.types.is_decimal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_decimal128.html">pyarrow.types.is_decimal128</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_decimal256.html">pyarrow.types.is_decimal256</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_list.html">pyarrow.types.is_list</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_list.html">pyarrow.types.is_large_list</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_fixed_size_list.html">pyarrow.types.is_fixed_size_list</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_list_view.html">pyarrow.types.is_list_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_list_view.html">pyarrow.types.is_large_list_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_struct.html">pyarrow.types.is_struct</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_union.html">pyarrow.types.is_union</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_nested.html">pyarrow.types.is_nested</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_run_end_encoded.html">pyarrow.types.is_run_end_encoded</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_temporal.html">pyarrow.types.is_temporal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_timestamp.html">pyarrow.types.is_timestamp</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_date.html">pyarrow.types.is_date</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_date32.html">pyarrow.types.is_date32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_date64.html">pyarrow.types.is_date64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_time.html">pyarrow.types.is_time</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_time32.html">pyarrow.types.is_time32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_time64.html">pyarrow.types.is_time64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_duration.html">pyarrow.types.is_duration</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_interval.html">pyarrow.types.is_interval</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_null.html">pyarrow.types.is_null</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_binary.html">pyarrow.types.is_binary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_unicode.html">pyarrow.types.is_unicode</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_string.html">pyarrow.types.is_string</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_binary.html">pyarrow.types.is_large_binary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_unicode.html">pyarrow.types.is_large_unicode</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_string.html">pyarrow.types.is_large_string</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_binary_view.html">pyarrow.types.is_binary_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_string_view.html">pyarrow.types.is_string_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_fixed_size_binary.html">pyarrow.types.is_fixed_size_binary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_map.html">pyarrow.types.is_map</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_dictionary.html">pyarrow.types.is_dictionary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_primitive.html">pyarrow.types.is_primitive</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.TypesEnum.html">pyarrow.types.TypesEnum</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/arrays.html">Arrays and Scalars</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.array.html">pyarrow.array</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int16Array.html">pyarrow.Int16Array</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NumericArray.html">pyarrow.NumericArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt8Array.html">pyarrow.UInt8Array</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt32Array.html">pyarrow.UInt32Array</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.HalfFloatArray.html">pyarrow.HalfFloatArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FloatArray.html">pyarrow.FloatArray</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryArray.html">pyarrow.BinaryArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StringArray.html">pyarrow.StringArray</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeBinaryArray.html">pyarrow.LargeBinaryArray</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryViewArray.html">pyarrow.BinaryViewArray</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Time64Array.html">pyarrow.Time64Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Date32Array.html">pyarrow.Date32Array</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.scalar.html">pyarrow.scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NA.html">pyarrow.NA</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Scalar.html">pyarrow.Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BooleanScalar.html">pyarrow.BooleanScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int8Scalar.html">pyarrow.Int8Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int16Scalar.html">pyarrow.Int16Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int32Scalar.html">pyarrow.Int32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int64Scalar.html">pyarrow.Int64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NullScalar.html">pyarrow.NullScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt8Scalar.html">pyarrow.UInt8Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt16Scalar.html">pyarrow.UInt16Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt32Scalar.html">pyarrow.UInt32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt64Scalar.html">pyarrow.UInt64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.HalfFloatScalar.html">pyarrow.HalfFloatScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FloatScalar.html">pyarrow.FloatScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DoubleScalar.html">pyarrow.DoubleScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryScalar.html">pyarrow.BinaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StringScalar.html">pyarrow.StringScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeBinaryScalar.html">pyarrow.FixedSizeBinaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeBinaryScalar.html">pyarrow.LargeBinaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeStringScalar.html">pyarrow.LargeStringScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryViewScalar.html">pyarrow.BinaryViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StringViewScalar.html">pyarrow.StringViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Time32Scalar.html">pyarrow.Time32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Time64Scalar.html">pyarrow.Time64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Date32Scalar.html">pyarrow.Date32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Date64Scalar.html">pyarrow.Date64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.TimestampScalar.html">pyarrow.TimestampScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DurationScalar.html">pyarrow.DurationScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MonthDayNanoIntervalScalar.html">pyarrow.MonthDayNanoIntervalScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal128Scalar.html">pyarrow.Decimal128Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal256Scalar.html">pyarrow.Decimal256Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DictionaryScalar.html">pyarrow.DictionaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RunEndEncodedScalar.html">pyarrow.RunEndEncodedScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ListScalar.html">pyarrow.ListScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeListScalar.html">pyarrow.FixedSizeListScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeListScalar.html">pyarrow.LargeListScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ListViewScalar.html">pyarrow.ListViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeListViewScalar.html">pyarrow.LargeListViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MapScalar.html">pyarrow.MapScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StructScalar.html">pyarrow.StructScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UnionScalar.html">pyarrow.UnionScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ExtensionScalar.html">pyarrow.ExtensionScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedShapeTensorScalar.html">pyarrow.FixedShapeTensorScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.OpaqueScalar.html">pyarrow.OpaqueScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.JsonScalar.html">pyarrow.JsonScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UuidScalar.html">pyarrow.UuidScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Bool8Scalar.html">pyarrow.Bool8Scalar</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/memory.html">Buffers and Memory</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.allocate_buffer.html">pyarrow.allocate_buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.py_buffer.html">pyarrow.py_buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.foreign_buffer.html">pyarrow.foreign_buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Buffer.html">pyarrow.Buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ResizableBuffer.html">pyarrow.ResizableBuffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Codec.html">pyarrow.Codec</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compress.html">pyarrow.compress</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.decompress.html">pyarrow.decompress</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MemoryPool.html">pyarrow.MemoryPool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.default_memory_pool.html">pyarrow.default_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.jemalloc_memory_pool.html">pyarrow.jemalloc_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.mimalloc_memory_pool.html">pyarrow.mimalloc_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.system_memory_pool.html">pyarrow.system_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.jemalloc_set_decay_ms.html">pyarrow.jemalloc_set_decay_ms</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.set_memory_pool.html">pyarrow.set_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.log_memory_allocations.html">pyarrow.log_memory_allocations</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.total_allocated_bytes.html">pyarrow.total_allocated_bytes</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/tables.html">Tables and Tensors</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.chunked_array.html">pyarrow.chunked_array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.concat_arrays.html">pyarrow.concat_arrays</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.concat_tables.html">pyarrow.concat_tables</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.record_batch.html">pyarrow.record_batch</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.concat_batches.html">pyarrow.concat_batches</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.table.html">pyarrow.table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ChunkedArray.html">pyarrow.ChunkedArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RecordBatch.html">pyarrow.RecordBatch</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Table.html">pyarrow.Table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.TableGroupBy.html">pyarrow.TableGroupBy</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RecordBatchReader.html">pyarrow.RecordBatchReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.interchange.from_dataframe.html">pyarrow.interchange.from_dataframe</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Tensor.html">pyarrow.Tensor</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/compute.html">Compute Functions</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.all.html">pyarrow.compute.all</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.any.html">pyarrow.compute.any</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.approximate_median.html">pyarrow.compute.approximate_median</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.count.html">pyarrow.compute.count</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.count_distinct.html">pyarrow.compute.count_distinct</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.index.html">pyarrow.compute.index</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.max.html">pyarrow.compute.max</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.mean.html">pyarrow.compute.mean</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.min.html">pyarrow.compute.min</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.min_max.html">pyarrow.compute.min_max</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.mode.html">pyarrow.compute.mode</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.pivot_wider.html">pyarrow.compute.pivot_wider</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.product.html">pyarrow.compute.product</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.quantile.html">pyarrow.compute.quantile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.stddev.html">pyarrow.compute.stddev</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sum.html">pyarrow.compute.sum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.tdigest.html">pyarrow.compute.tdigest</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.variance.html">pyarrow.compute.variance</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_sum.html">pyarrow.compute.cumulative_sum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_sum_checked.html">pyarrow.compute.cumulative_sum_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_prod.html">pyarrow.compute.cumulative_prod</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_prod_checked.html">pyarrow.compute.cumulative_prod_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_max.html">pyarrow.compute.cumulative_max</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_min.html">pyarrow.compute.cumulative_min</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.abs.html">pyarrow.compute.abs</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.abs_checked.html">pyarrow.compute.abs_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.add.html">pyarrow.compute.add</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.add_checked.html">pyarrow.compute.add_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.divide.html">pyarrow.compute.divide</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.divide_checked.html">pyarrow.compute.divide_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.multiply.html">pyarrow.compute.multiply</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.multiply_checked.html">pyarrow.compute.multiply_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.negate.html">pyarrow.compute.negate</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.negate_checked.html">pyarrow.compute.negate_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.power.html">pyarrow.compute.power</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.power_checked.html">pyarrow.compute.power_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sign.html">pyarrow.compute.sign</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sqrt.html">pyarrow.compute.sqrt</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sqrt_checked.html">pyarrow.compute.sqrt_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.subtract.html">pyarrow.compute.subtract</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.subtract_checked.html">pyarrow.compute.subtract_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_and.html">pyarrow.compute.bit_wise_and</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_not.html">pyarrow.compute.bit_wise_not</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_or.html">pyarrow.compute.bit_wise_or</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_xor.html">pyarrow.compute.bit_wise_xor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.shift_left.html">pyarrow.compute.shift_left</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.shift_left_checked.html">pyarrow.compute.shift_left_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.shift_right.html">pyarrow.compute.shift_right</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.shift_right_checked.html">pyarrow.compute.shift_right_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ceil.html">pyarrow.compute.ceil</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.floor.html">pyarrow.compute.floor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.round.html">pyarrow.compute.round</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.round_to_multiple.html">pyarrow.compute.round_to_multiple</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.trunc.html">pyarrow.compute.trunc</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ln.html">pyarrow.compute.ln</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ln_checked.html">pyarrow.compute.ln_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log10.html">pyarrow.compute.log10</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log10_checked.html">pyarrow.compute.log10_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log1p.html">pyarrow.compute.log1p</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log1p_checked.html">pyarrow.compute.log1p_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log2.html">pyarrow.compute.log2</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log2_checked.html">pyarrow.compute.log2_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.logb.html">pyarrow.compute.logb</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.logb_checked.html">pyarrow.compute.logb_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.acos.html">pyarrow.compute.acos</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.acos_checked.html">pyarrow.compute.acos_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.asin.html">pyarrow.compute.asin</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.asin_checked.html">pyarrow.compute.asin_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.atan.html">pyarrow.compute.atan</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.atan2.html">pyarrow.compute.atan2</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cos.html">pyarrow.compute.cos</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cos_checked.html">pyarrow.compute.cos_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sin.html">pyarrow.compute.sin</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sin_checked.html">pyarrow.compute.sin_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.tan.html">pyarrow.compute.tan</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.tan_checked.html">pyarrow.compute.tan_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.equal.html">pyarrow.compute.equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.greater.html">pyarrow.compute.greater</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.greater_equal.html">pyarrow.compute.greater_equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.less.html">pyarrow.compute.less</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.less_equal.html">pyarrow.compute.less_equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.not_equal.html">pyarrow.compute.not_equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.max_element_wise.html">pyarrow.compute.max_element_wise</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.min_element_wise.html">pyarrow.compute.min_element_wise</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_.html">pyarrow.compute.and_</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_kleene.html">pyarrow.compute.and_kleene</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_not.html">pyarrow.compute.and_not</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_not_kleene.html">pyarrow.compute.and_not_kleene</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.invert.html">pyarrow.compute.invert</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.or_.html">pyarrow.compute.or_</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.or_kleene.html">pyarrow.compute.or_kleene</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.xor.html">pyarrow.compute.xor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_alnum.html">pyarrow.compute.ascii_is_alnum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_alpha.html">pyarrow.compute.ascii_is_alpha</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_decimal.html">pyarrow.compute.ascii_is_decimal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_lower.html">pyarrow.compute.ascii_is_lower</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_printable.html">pyarrow.compute.ascii_is_printable</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_space.html">pyarrow.compute.ascii_is_space</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_upper.html">pyarrow.compute.ascii_is_upper</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_alnum.html">pyarrow.compute.utf8_is_alnum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_alpha.html">pyarrow.compute.utf8_is_alpha</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_decimal.html">pyarrow.compute.utf8_is_decimal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_digit.html">pyarrow.compute.utf8_is_digit</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_lower.html">pyarrow.compute.utf8_is_lower</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_numeric.html">pyarrow.compute.utf8_is_numeric</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_printable.html">pyarrow.compute.utf8_is_printable</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_space.html">pyarrow.compute.utf8_is_space</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_upper.html">pyarrow.compute.utf8_is_upper</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_title.html">pyarrow.compute.ascii_is_title</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_title.html">pyarrow.compute.utf8_is_title</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.string_is_ascii.html">pyarrow.compute.string_is_ascii</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_capitalize.html">pyarrow.compute.ascii_capitalize</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_lower.html">pyarrow.compute.ascii_lower</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_reverse.html">pyarrow.compute.ascii_reverse</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_swapcase.html">pyarrow.compute.ascii_swapcase</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_title.html">pyarrow.compute.ascii_title</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ScalarAggregateOptions.html">pyarrow.compute.ScalarAggregateOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.SelectKOptions.html">pyarrow.compute.SelectKOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.SetLookupOptions.html">pyarrow.compute.SetLookupOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.SliceOptions.html">pyarrow.compute.SliceOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.SortOptions.html">pyarrow.compute.SortOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.SplitOptions.html">pyarrow.compute.SplitOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.SplitPatternOptions.html">pyarrow.compute.SplitPatternOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.StrftimeOptions.html">pyarrow.compute.StrftimeOptions</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.register_scalar_function.html">pyarrow.compute.register_scalar_function</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.UdfContext.html">pyarrow.compute.UdfContext</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.field.html">pyarrow.compute.field</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.scalar.html">pyarrow.compute.scalar</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/acero.html">Acero - Streaming Execution Engine</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.Declaration.html">pyarrow.acero.Declaration</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.ExecNodeOptions.html">pyarrow.acero.ExecNodeOptions</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.ProjectNodeOptions.html">pyarrow.acero.ProjectNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.AggregateNodeOptions.html">pyarrow.acero.AggregateNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.OrderByNodeOptions.html">pyarrow.acero.OrderByNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.HashJoinNodeOptions.html">pyarrow.acero.HashJoinNodeOptions</a></li> |
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| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/substrait.html">Substrait</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.run_query.html">pyarrow.substrait.run_query</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.BoundExpressions.html">pyarrow.substrait.BoundExpressions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.deserialize_expressions.html">pyarrow.substrait.deserialize_expressions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.serialize_expressions.html">pyarrow.substrait.serialize_expressions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.serialize_schema.html">pyarrow.substrait.serialize_schema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.deserialize_schema.html">pyarrow.substrait.deserialize_schema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.SubstraitSchema.html">pyarrow.substrait.SubstraitSchema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.get_supported_functions.html">pyarrow.substrait.get_supported_functions</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/files.html">Streams and File Access</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.input_stream.html">pyarrow.input_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.output_stream.html">pyarrow.output_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.memory_map.html">pyarrow.memory_map</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.create_memory_map.html">pyarrow.create_memory_map</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NativeFile.html">pyarrow.NativeFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.OSFile.html">pyarrow.OSFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.PythonFile.html">pyarrow.PythonFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BufferReader.html">pyarrow.BufferReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BufferOutputStream.html">pyarrow.BufferOutputStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeBufferWriter.html">pyarrow.FixedSizeBufferWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MemoryMappedFile.html">pyarrow.MemoryMappedFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.CompressedInputStream.html">pyarrow.CompressedInputStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.CompressedOutputStream.html">pyarrow.CompressedOutputStream</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/ipc.html">Serialization and IPC</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.new_file.html">pyarrow.ipc.new_file</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.open_file.html">pyarrow.ipc.open_file</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.new_stream.html">pyarrow.ipc.new_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.open_stream.html">pyarrow.ipc.open_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.read_message.html">pyarrow.ipc.read_message</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.read_record_batch.html">pyarrow.ipc.read_record_batch</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.get_record_batch_size.html">pyarrow.ipc.get_record_batch_size</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.read_tensor.html">pyarrow.ipc.read_tensor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.write_tensor.html">pyarrow.ipc.write_tensor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.get_tensor_size.html">pyarrow.ipc.get_tensor_size</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.IpcReadOptions.html">pyarrow.ipc.IpcReadOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.IpcWriteOptions.html">pyarrow.ipc.IpcWriteOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.Message.html">pyarrow.ipc.Message</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.MessageReader.html">pyarrow.ipc.MessageReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchFileReader.html">pyarrow.ipc.RecordBatchFileReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchFileWriter.html">pyarrow.ipc.RecordBatchFileWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchStreamReader.html">pyarrow.ipc.RecordBatchStreamReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchStreamWriter.html">pyarrow.ipc.RecordBatchStreamWriter</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/flight.html">Arrow Flight</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.Action.html">pyarrow.flight.Action</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ActionType.html">pyarrow.flight.ActionType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.DescriptorType.html">pyarrow.flight.DescriptorType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightDescriptor.html">pyarrow.flight.FlightDescriptor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightEndpoint.html">pyarrow.flight.FlightEndpoint</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightInfo.html">pyarrow.flight.FlightInfo</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.Location.html">pyarrow.flight.Location</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.MetadataRecordBatchReader.html">pyarrow.flight.MetadataRecordBatchReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.MetadataRecordBatchWriter.html">pyarrow.flight.MetadataRecordBatchWriter</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightCallOptions.html">pyarrow.flight.FlightCallOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightClient.html">pyarrow.flight.FlightClient</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightStreamReader.html">pyarrow.flight.FlightStreamReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightStreamWriter.html">pyarrow.flight.FlightStreamWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ClientMiddlewareFactory.html">pyarrow.flight.ClientMiddlewareFactory</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightDataStream.html">pyarrow.flight.FlightDataStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightMetadataWriter.html">pyarrow.flight.FlightMetadataWriter</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.GeneratorStream.html">pyarrow.flight.GeneratorStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.RecordBatchStream.html">pyarrow.flight.RecordBatchStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerCallContext.html">pyarrow.flight.ServerCallContext</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerMiddlewareFactory.html">pyarrow.flight.ServerMiddlewareFactory</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerMiddleware.html">pyarrow.flight.ServerMiddleware</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ClientAuthHandler.html">pyarrow.flight.ClientAuthHandler</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerAuthHandler.html">pyarrow.flight.ServerAuthHandler</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightError.html">pyarrow.flight.FlightError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightCancelledError.html">pyarrow.flight.FlightCancelledError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightInternalError.html">pyarrow.flight.FlightInternalError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightServerError.html">pyarrow.flight.FlightServerError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightTimedOutError.html">pyarrow.flight.FlightTimedOutError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightUnauthenticatedError.html">pyarrow.flight.FlightUnauthenticatedError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightUnauthorizedError.html">pyarrow.flight.FlightUnauthorizedError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightUnavailableError.html">pyarrow.flight.FlightUnavailableError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightWriteSizeExceededError.html">pyarrow.flight.FlightWriteSizeExceededError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightMethod.html">pyarrow.flight.FlightMethod</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.CallInfo.html">pyarrow.flight.CallInfo</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/formats.html">Tabular File Formats</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ConvertOptions.html">pyarrow.csv.ConvertOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.CSVStreamingReader.html">pyarrow.csv.CSVStreamingReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.CSVWriter.html">pyarrow.csv.CSVWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ISO8601.html">pyarrow.csv.ISO8601</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ParseOptions.html">pyarrow.csv.ParseOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ReadOptions.html">pyarrow.csv.ReadOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.WriteOptions.html">pyarrow.csv.WriteOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.open_csv.html">pyarrow.csv.open_csv</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.read_csv.html">pyarrow.csv.read_csv</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.write_csv.html">pyarrow.csv.write_csv</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.InvalidRow.html">pyarrow.csv.InvalidRow</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.feather.read_feather.html">pyarrow.feather.read_feather</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.feather.read_table.html">pyarrow.feather.read_table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.feather.write_feather.html">pyarrow.feather.write_feather</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.ReadOptions.html">pyarrow.json.ReadOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.ParseOptions.html">pyarrow.json.ParseOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.open_json.html">pyarrow.json.open_json</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.read_json.html">pyarrow.json.read_json</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ParquetDataset.html">pyarrow.parquet.ParquetDataset</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ParquetWriter.html">pyarrow.parquet.ParquetWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_table.html">pyarrow.parquet.read_table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_metadata.html">pyarrow.parquet.read_metadata</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_pandas.html">pyarrow.parquet.read_pandas</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_schema.html">pyarrow.parquet.read_schema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.write_metadata.html">pyarrow.parquet.write_metadata</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.write_table.html">pyarrow.parquet.write_table</a></li> |
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| <li class="toctree-l2"><a class="reference external" href="https://arrow.apache.org/cookbook/py/">Python cookbook</a></li> |
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| </details></li> |
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| <li class="toctree-l1"><a class="reference external" href="https://docs.rs/crate/arrow/">Rust</a></li> |
| <li class="toctree-l1"><a class="reference external" href="https://github.com/apache/arrow-swift/blob/main/Arrow/README.md">Swift</a></li> |
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| <li class="toctree-l1"><a class="reference internal" href="../status.html">Implementation Status</a></li> |
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| <section id="c-data-interface"> |
| <h1><a class="toc-backref" href="#id1" role="doc-backlink">C Data Interface</a><a class="headerlink" href="#c-data-interface" title="Link to this heading">#</a></h1> |
| <nav class="contents" id="contents"> |
| <p class="topic-title">Contents</p> |
| <ul class="simple"> |
| <li><p><a class="reference internal" href="#c-data-interface" id="id1">C Data Interface</a></p> |
| <ul> |
| <li><p><a class="reference internal" href="#java-to-python" id="id2">Java to Python</a></p></li> |
| <li><p><a class="reference internal" href="#java-to-c" id="id3">Java to C++</a></p> |
| <ul> |
| <li><p><a class="reference internal" href="#share-an-int64-array-from-c-to-java" id="id4">Share an Int64 array from C++ to Java</a></p></li> |
| <li><p><a class="reference internal" href="#share-an-int32-array-from-java-to-c" id="id5">Share an Int32 array from Java to C++</a></p></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </nav> |
| <p>Arrow supports exchanging data without copying or serialization within the same process |
| through the <a class="reference internal" href="../format/CDataInterface.html#c-data-interface"><span class="std std-ref">The Arrow C data interface</span></a>, even between different language runtimes.</p> |
| <section id="java-to-python"> |
| <h2><a class="toc-backref" href="#id2" role="doc-backlink">Java to Python</a><a class="headerlink" href="#java-to-python" title="Link to this heading">#</a></h2> |
| <p>See <a class="reference internal" href="../python/integration/python_java.html"><span class="doc">Integrating PyArrow with Java</span></a> to implement Java to |
| Python communication using the C Data Interface.</p> |
| </section> |
| <section id="java-to-c"> |
| <h2><a class="toc-backref" href="#id3" role="doc-backlink">Java to C++</a><a class="headerlink" href="#java-to-c" title="Link to this heading">#</a></h2> |
| <p>See <a class="reference internal" href="../developers/cpp/building.html"><span class="doc">Building Arrow C++</span></a> to build the Arrow C++ libraries:</p> |
| <div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>git<span class="w"> </span>clone<span class="w"> </span>https://github.com/apache/arrow.git |
| $<span class="w"> </span><span class="nb">cd</span><span class="w"> </span>arrow/cpp |
| $<span class="w"> </span>mkdir<span class="w"> </span>build<span class="w"> </span><span class="c1"># from inside the `cpp` subdirectory</span> |
| $<span class="w"> </span><span class="nb">cd</span><span class="w"> </span>build |
| $<span class="w"> </span>cmake<span class="w"> </span>..<span class="w"> </span>--preset<span class="w"> </span>ninja-debug-minimal |
| $<span class="w"> </span>cmake<span class="w"> </span>--build<span class="w"> </span>. |
| $<span class="w"> </span>tree<span class="w"> </span>debug/ |
| debug/ |
| ├──<span class="w"> </span>libarrow.800.0.0.dylib |
| ├──<span class="w"> </span>libarrow.800.dylib<span class="w"> </span>-><span class="w"> </span>libarrow.800.0.0.dylib |
| └──<span class="w"> </span>libarrow.dylib<span class="w"> </span>-><span class="w"> </span>libarrow.800.dylib |
| </pre></div> |
| </div> |
| <section id="share-an-int64-array-from-c-to-java"> |
| <h3><a class="toc-backref" href="#id4" role="doc-backlink">Share an Int64 array from C++ to Java</a><a class="headerlink" href="#share-an-int64-array-from-c-to-java" title="Link to this heading">#</a></h3> |
| <p><strong>C++ Side</strong></p> |
| <p>Implement a function in CDataCppBridge.h that exports an array via the C Data Interface:</p> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><iostream></span> |
| <span class="cp">#include</span><span class="w"> </span><span class="cpf"><arrow/api.h></span> |
| <span class="cp">#include</span><span class="w"> </span><span class="cpf"><arrow/c/bridge.h></span> |
| |
| <span class="kt">void</span><span class="w"> </span><span class="nf">FillInt64Array</span><span class="p">(</span><span class="k">const</span><span class="w"> </span><span class="kt">uintptr_t</span><span class="w"> </span><span class="n">c_schema_ptr</span><span class="p">,</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">uintptr_t</span><span class="w"> </span><span class="n">c_array_ptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">arrow</span><span class="o">::</span><span class="n">Int64Builder</span><span class="w"> </span><span class="n">builder</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">1</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">2</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">AppendNull</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">5</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">6</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">7</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">8</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">9</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">builder</span><span class="p">.</span><span class="n">Append</span><span class="p">(</span><span class="mi">10</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">shared_ptr</span><span class="o"><</span><span class="n">arrow</span><span class="o">::</span><span class="n">Array</span><span class="o">></span><span class="w"> </span><span class="n">array</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">*</span><span class="n">builder</span><span class="p">.</span><span class="n">Finish</span><span class="p">();</span> |
| |
| <span class="w"> </span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowSchema</span><span class="o">*</span><span class="w"> </span><span class="n">c_schema</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">reinterpret_cast</span><span class="o"><</span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowSchema</span><span class="o">*></span><span class="p">(</span><span class="n">c_schema_ptr</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">auto</span><span class="w"> </span><span class="n">c_schema_status</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">arrow</span><span class="o">::</span><span class="n">ExportType</span><span class="p">(</span><span class="o">*</span><span class="n">array</span><span class="o">-></span><span class="n">type</span><span class="p">(),</span><span class="w"> </span><span class="n">c_schema</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">c_schema_status</span><span class="p">.</span><span class="n">ok</span><span class="p">())</span><span class="w"> </span><span class="n">c_schema_status</span><span class="p">.</span><span class="n">Abort</span><span class="p">();</span> |
| |
| <span class="w"> </span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowArray</span><span class="o">*</span><span class="w"> </span><span class="n">c_array</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">reinterpret_cast</span><span class="o"><</span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowArray</span><span class="o">*></span><span class="p">(</span><span class="n">c_array_ptr</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">auto</span><span class="w"> </span><span class="n">c_array_status</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">arrow</span><span class="o">::</span><span class="n">ExportArray</span><span class="p">(</span><span class="o">*</span><span class="n">array</span><span class="p">,</span><span class="w"> </span><span class="n">c_array</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">c_array_status</span><span class="p">.</span><span class="n">ok</span><span class="p">())</span><span class="w"> </span><span class="n">c_array_status</span><span class="p">.</span><span class="n">Abort</span><span class="p">();</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <p><strong>Java Side</strong></p> |
| <p>For this example, we will use <a class="reference external" href="https://github.com/bytedeco/javacpp">JavaCPP</a> to call our C++ function from Java, |
| without writing JNI bindings ourselves.</p> |
| <div class="highlight-xml notranslate"><div class="highlight"><pre><span></span><span class="cp"><?xml version="1.0" encoding="UTF-8"?></span> |
| <span class="nt"><project</span><span class="w"> </span><span class="na">xmlns=</span><span class="s">"http://maven.apache.org/POM/4.0.0"</span> |
| <span class="w"> </span><span class="na">xmlns:xsi=</span><span class="s">"http://www.w3.org/2001/XMLSchema-instance"</span> |
| <span class="w"> </span><span class="na">xsi:schemaLocation=</span><span class="s">"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"</span><span class="nt">></span> |
| <span class="w"> </span><span class="nt"><modelVersion></span>4.0.0<span class="nt"></modelVersion></span> |
| |
| <span class="w"> </span><span class="nt"><groupId></span>org.example<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>java-cdata-example<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>1.0-SNAPSHOT<span class="nt"></version></span> |
| |
| <span class="w"> </span><span class="nt"><properties></span> |
| <span class="w"> </span><span class="nt"><maven.compiler.source></span>8<span class="nt"></maven.compiler.source></span> |
| <span class="w"> </span><span class="nt"><maven.compiler.target></span>8<span class="nt"></maven.compiler.target></span> |
| <span class="w"> </span><span class="nt"><arrow.version></span>9.0.0<span class="nt"></arrow.version></span> |
| <span class="w"> </span><span class="nt"></properties></span> |
| <span class="w"> </span><span class="nt"><dependencies></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.bytedeco<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>javacpp<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>1.5.7<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.arrow<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>arrow-c-data<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>${arrow.version}<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.arrow<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>arrow-vector<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>${arrow.version}<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.arrow<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>arrow-memory-core<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>${arrow.version}<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.arrow<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>arrow-memory-netty<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>${arrow.version}<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.arrow<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>arrow-format<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>${arrow.version}<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"></dependencies></span> |
| <span class="nt"></project></span> |
| </pre></div> |
| </div> |
| <div class="highlight-java notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span><span class="w"> </span><span class="nn">org.bytedeco.javacpp.annotation.Platform</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.bytedeco.javacpp.annotation.Properties</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.bytedeco.javacpp.tools.InfoMap</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.bytedeco.javacpp.tools.InfoMapper</span><span class="p">;</span> |
| |
| <span class="nd">@Properties</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">target</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"CDataJavaToCppExample"</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nd">@Platform</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">include</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="s">"CDataCppBridge.h"</span> |
| <span class="w"> </span><span class="p">},</span> |
| <span class="w"> </span><span class="n">compiler</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="s">"cpp17"</span><span class="p">},</span> |
| <span class="w"> </span><span class="n">linkpath</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="s">"/arrow/cpp/build/debug/"</span><span class="p">},</span> |
| <span class="w"> </span><span class="n">link</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="s">"arrow"</span><span class="p">}</span> |
| <span class="w"> </span><span class="p">)</span> |
| <span class="p">)</span> |
| <span class="kd">public</span><span class="w"> </span><span class="kd">class</span> <span class="nc">CDataJavaConfig</span><span class="w"> </span><span class="kd">implements</span><span class="w"> </span><span class="n">InfoMapper</span><span class="w"> </span><span class="p">{</span> |
| |
| <span class="w"> </span><span class="nd">@Override</span> |
| <span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">map</span><span class="p">(</span><span class="n">InfoMap</span><span class="w"> </span><span class="n">infoMap</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <div class="highlight-shell notranslate"><div class="highlight"><pre><span></span><span class="c1"># Compile our Java code</span> |
| $<span class="w"> </span>javac<span class="w"> </span>-cp<span class="w"> </span>javacpp-1.5.7.jar<span class="w"> </span>CDataJavaConfig.java |
| |
| <span class="c1"># Generate CDataInterfaceLibrary</span> |
| $<span class="w"> </span>java<span class="w"> </span>-jar<span class="w"> </span>javacpp-1.5.7.jar<span class="w"> </span>CDataJavaConfig.java |
| |
| <span class="c1"># Generate libjniCDataInterfaceLibrary.dylib</span> |
| $<span class="w"> </span>java<span class="w"> </span>-jar<span class="w"> </span>javacpp-1.5.7.jar<span class="w"> </span>CDataJavaToCppExample.java |
| |
| <span class="c1"># Validate libjniCDataInterfaceLibrary.dylib created</span> |
| $<span class="w"> </span>otool<span class="w"> </span>-L<span class="w"> </span>macosx-x86_64/libjniCDataJavaToCppExample.dylib |
| macosx-x86_64/libjniCDataJavaToCppExample.dylib: |
| <span class="w"> </span>libjniCDataJavaToCppExample.dylib<span class="w"> </span><span class="o">(</span>compatibility<span class="w"> </span>version<span class="w"> </span><span class="m">0</span>.0.0,<span class="w"> </span>current<span class="w"> </span>version<span class="w"> </span><span class="m">0</span>.0.0<span class="o">)</span> |
| <span class="w"> </span>@rpath/libarrow.800.dylib<span class="w"> </span><span class="o">(</span>compatibility<span class="w"> </span>version<span class="w"> </span><span class="m">800</span>.0.0,<span class="w"> </span>current<span class="w"> </span>version<span class="w"> </span><span class="m">800</span>.0.0<span class="o">)</span> |
| <span class="w"> </span>/usr/lib/libc++.1.dylib<span class="w"> </span><span class="o">(</span>compatibility<span class="w"> </span>version<span class="w"> </span><span class="m">1</span>.0.0,<span class="w"> </span>current<span class="w"> </span>version<span class="w"> </span><span class="m">1200</span>.3.0<span class="o">)</span> |
| <span class="w"> </span>/usr/lib/libSystem.B.dylib<span class="w"> </span><span class="o">(</span>compatibility<span class="w"> </span>version<span class="w"> </span><span class="m">1</span>.0.0,<span class="w"> </span>current<span class="w"> </span>version<span class="w"> </span><span class="m">1311</span>.0.0<span class="o">)</span> |
| </pre></div> |
| </div> |
| <p><strong>Java Test</strong></p> |
| <p>Let’s create a Java class to test our bridge:</p> |
| <div class="highlight-java notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.c.ArrowArray</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.c.ArrowSchema</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.c.Data</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.memory.BufferAllocator</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.memory.RootAllocator</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.vector.BigIntVector</span><span class="p">;</span> |
| |
| <span class="kd">public</span><span class="w"> </span><span class="kd">class</span> <span class="nc">TestCDataInterface</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">main</span><span class="p">(</span><span class="n">String</span><span class="o">[]</span><span class="w"> </span><span class="n">args</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="k">try</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">BufferAllocator</span><span class="w"> </span><span class="n">allocator</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">RootAllocator</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">ArrowSchema</span><span class="w"> </span><span class="n">arrowSchema</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ArrowSchema</span><span class="p">.</span><span class="na">allocateNew</span><span class="p">(</span><span class="n">allocator</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">ArrowArray</span><span class="w"> </span><span class="n">arrowArray</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ArrowArray</span><span class="p">.</span><span class="na">allocateNew</span><span class="p">(</span><span class="n">allocator</span><span class="p">)</span> |
| <span class="w"> </span><span class="p">){</span> |
| <span class="w"> </span><span class="n">CDataJavaToCppExample</span><span class="p">.</span><span class="na">FillInt64Array</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">arrowSchema</span><span class="p">.</span><span class="na">memoryAddress</span><span class="p">(),</span><span class="w"> </span><span class="n">arrowArray</span><span class="p">.</span><span class="na">memoryAddress</span><span class="p">());</span> |
| <span class="w"> </span><span class="k">try</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">BigIntVector</span><span class="w"> </span><span class="n">bigIntVector</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">BigIntVector</span><span class="p">)</span><span class="w"> </span><span class="n">Data</span><span class="p">.</span><span class="na">importVector</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">allocator</span><span class="p">,</span><span class="w"> </span><span class="n">arrowArray</span><span class="p">,</span><span class="w"> </span><span class="n">arrowSchema</span><span class="p">,</span><span class="w"> </span><span class="kc">null</span><span class="p">)</span> |
| <span class="w"> </span><span class="p">){</span> |
| <span class="w"> </span><span class="n">System</span><span class="p">.</span><span class="na">out</span><span class="p">.</span><span class="na">println</span><span class="p">(</span><span class="s">"C++-allocated array: "</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">bigIntVector</span><span class="p">);</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>C++-allocated<span class="w"> </span>array:<span class="w"> </span><span class="o">[</span><span class="m">1</span>,<span class="w"> </span><span class="m">2</span>,<span class="w"> </span><span class="m">3</span>,<span class="w"> </span>null,<span class="w"> </span><span class="m">5</span>,<span class="w"> </span><span class="m">6</span>,<span class="w"> </span><span class="m">7</span>,<span class="w"> </span><span class="m">8</span>,<span class="w"> </span><span class="m">9</span>,<span class="w"> </span><span class="m">10</span><span class="o">]</span> |
| </pre></div> |
| </div> |
| </section> |
| <section id="share-an-int32-array-from-java-to-c"> |
| <h3><a class="toc-backref" href="#id5" role="doc-backlink">Share an Int32 array from Java to C++</a><a class="headerlink" href="#share-an-int32-array-from-java-to-c" title="Link to this heading">#</a></h3> |
| <p><strong>Java Side</strong></p> |
| <p>For this example, we will build a JAR with all dependencies bundled.</p> |
| <div class="highlight-xml notranslate"><div class="highlight"><pre><span></span><span class="cp"><?xml version="1.0" encoding="UTF-8"?></span> |
| <span class="nt"><project</span><span class="w"> </span><span class="na">xmlns=</span><span class="s">"http://maven.apache.org/POM/4.0.0"</span> |
| <span class="w"> </span><span class="na">xmlns:xsi=</span><span class="s">"http://www.w3.org/2001/XMLSchema-instance"</span> |
| <span class="w"> </span><span class="na">xsi:schemaLocation=</span><span class="s">"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"</span><span class="nt">></span> |
| <span class="w"> </span><span class="nt"><modelVersion></span>4.0.0<span class="nt"></modelVersion></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.example<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>cpptojava<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>1.0-SNAPSHOT<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"><properties></span> |
| <span class="w"> </span><span class="nt"><maven.compiler.source></span>8<span class="nt"></maven.compiler.source></span> |
| <span class="w"> </span><span class="nt"><maven.compiler.target></span>8<span class="nt"></maven.compiler.target></span> |
| <span class="w"> </span><span class="nt"><arrow.version></span>9.0.0<span class="nt"></arrow.version></span> |
| <span class="w"> </span><span class="nt"></properties></span> |
| <span class="w"> </span><span class="nt"><dependencies></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.arrow<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>arrow-c-data<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>${arrow.version}<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"><dependency></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.arrow<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>arrow-memory-netty<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><version></span>${arrow.version}<span class="nt"></version></span> |
| <span class="w"> </span><span class="nt"></dependency></span> |
| <span class="w"> </span><span class="nt"></dependencies></span> |
| <span class="w"> </span><span class="nt"><build></span> |
| <span class="w"> </span><span class="nt"><plugins></span> |
| <span class="w"> </span><span class="nt"><plugin></span> |
| <span class="w"> </span><span class="nt"><groupId></span>org.apache.maven.plugins<span class="nt"></groupId></span> |
| <span class="w"> </span><span class="nt"><artifactId></span>maven-assembly-plugin<span class="nt"></artifactId></span> |
| <span class="w"> </span><span class="nt"><executions></span> |
| <span class="w"> </span><span class="nt"><execution></span> |
| <span class="w"> </span><span class="nt"><phase></span>package<span class="nt"></phase></span> |
| <span class="w"> </span><span class="nt"><goals></span> |
| <span class="w"> </span><span class="nt"><goal></span>single<span class="nt"></goal></span> |
| <span class="w"> </span><span class="nt"></goals></span> |
| <span class="w"> </span><span class="nt"><configuration></span> |
| <span class="w"> </span><span class="nt"><descriptorRefs></span> |
| <span class="w"> </span><span class="nt"><descriptorRef></span>jar-with-dependencies<span class="nt"></descriptorRef></span> |
| <span class="w"> </span><span class="nt"></descriptorRefs></span> |
| <span class="w"> </span><span class="nt"></configuration></span> |
| <span class="w"> </span><span class="nt"></execution></span> |
| <span class="w"> </span><span class="nt"></executions></span> |
| <span class="w"> </span><span class="nt"></plugin></span> |
| <span class="w"> </span><span class="nt"></plugins></span> |
| <span class="w"> </span><span class="nt"></build></span> |
| <span class="nt"></project></span> |
| </pre></div> |
| </div> |
| <div class="highlight-java notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.c.ArrowArray</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.c.ArrowSchema</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.c.Data</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.memory.BufferAllocator</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.memory.RootAllocator</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.vector.FieldVector</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.vector.IntVector</span><span class="p">;</span> |
| <span class="kn">import</span><span class="w"> </span><span class="nn">org.apache.arrow.vector.VectorSchemaRoot</span><span class="p">;</span> |
| |
| <span class="kn">import</span><span class="w"> </span><span class="nn">java.util.Arrays</span><span class="p">;</span> |
| |
| <span class="kd">public</span><span class="w"> </span><span class="kd">class</span> <span class="nc">ToBeCalledByCpp</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="kd">final</span><span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="n">BufferAllocator</span><span class="w"> </span><span class="n">allocator</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">RootAllocator</span><span class="p">();</span> |
| |
| <span class="w"> </span><span class="cm">/**</span> |
| <span class="cm"> * Create a {@link FieldVector} and export it via the C Data Interface</span> |
| <span class="cm"> * @param schemaAddress Schema memory address to wrap</span> |
| <span class="cm"> * @param arrayAddress Array memory address to wrap</span> |
| <span class="cm"> */</span> |
| <span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">fillVector</span><span class="p">(</span><span class="kt">long</span><span class="w"> </span><span class="n">schemaAddress</span><span class="p">,</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="n">arrayAddress</span><span class="p">){</span> |
| <span class="w"> </span><span class="k">try</span><span class="w"> </span><span class="p">(</span><span class="n">ArrowArray</span><span class="w"> </span><span class="n">arrow_array</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ArrowArray</span><span class="p">.</span><span class="na">wrap</span><span class="p">(</span><span class="n">arrayAddress</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">ArrowSchema</span><span class="w"> </span><span class="n">arrow_schema</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ArrowSchema</span><span class="p">.</span><span class="na">wrap</span><span class="p">(</span><span class="n">schemaAddress</span><span class="p">)</span><span class="w"> </span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">Data</span><span class="p">.</span><span class="na">exportVector</span><span class="p">(</span><span class="n">allocator</span><span class="p">,</span><span class="w"> </span><span class="n">populateFieldVectorToExport</span><span class="p">(),</span><span class="w"> </span><span class="kc">null</span><span class="p">,</span><span class="w"> </span><span class="n">arrow_array</span><span class="p">,</span><span class="w"> </span><span class="n">arrow_schema</span><span class="p">);</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="p">}</span> |
| |
| <span class="w"> </span><span class="cm">/**</span> |
| <span class="cm"> * Create a {@link VectorSchemaRoot} and export it via the C Data Interface</span> |
| <span class="cm"> * @param schemaAddress Schema memory address to wrap</span> |
| <span class="cm"> * @param arrayAddress Array memory address to wrap</span> |
| <span class="cm"> */</span> |
| <span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">fillVectorSchemaRoot</span><span class="p">(</span><span class="kt">long</span><span class="w"> </span><span class="n">schemaAddress</span><span class="p">,</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="n">arrayAddress</span><span class="p">){</span> |
| <span class="w"> </span><span class="k">try</span><span class="w"> </span><span class="p">(</span><span class="n">ArrowArray</span><span class="w"> </span><span class="n">arrow_array</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ArrowArray</span><span class="p">.</span><span class="na">wrap</span><span class="p">(</span><span class="n">arrayAddress</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">ArrowSchema</span><span class="w"> </span><span class="n">arrow_schema</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ArrowSchema</span><span class="p">.</span><span class="na">wrap</span><span class="p">(</span><span class="n">schemaAddress</span><span class="p">)</span><span class="w"> </span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">Data</span><span class="p">.</span><span class="na">exportVectorSchemaRoot</span><span class="p">(</span><span class="n">allocator</span><span class="p">,</span><span class="w"> </span><span class="n">populateVectorSchemaRootToExport</span><span class="p">(),</span><span class="w"> </span><span class="kc">null</span><span class="p">,</span><span class="w"> </span><span class="n">arrow_array</span><span class="p">,</span><span class="w"> </span><span class="n">arrow_schema</span><span class="p">);</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="p">}</span> |
| |
| <span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="n">FieldVector</span><span class="w"> </span><span class="nf">populateFieldVectorToExport</span><span class="p">(){</span> |
| <span class="w"> </span><span class="n">IntVector</span><span class="w"> </span><span class="n">intVector</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">IntVector</span><span class="p">(</span><span class="s">"int-to-export"</span><span class="p">,</span><span class="w"> </span><span class="n">allocator</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">allocateNew</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span><span class="w"> </span><span class="mi">3</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">setValueCount</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">System</span><span class="p">.</span><span class="na">out</span><span class="p">.</span><span class="na">println</span><span class="p">(</span><span class="s">"[Java] FieldVector: \n"</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">intVector</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">intVector</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span> |
| |
| <span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="n">VectorSchemaRoot</span><span class="w"> </span><span class="nf">populateVectorSchemaRootToExport</span><span class="p">(){</span> |
| <span class="w"> </span><span class="n">IntVector</span><span class="w"> </span><span class="n">intVector</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">IntVector</span><span class="p">(</span><span class="s">"age-to-export"</span><span class="p">,</span><span class="w"> </span><span class="n">allocator</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="mi">10</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="mi">20</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span><span class="w"> </span><span class="mi">30</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">VectorSchemaRoot</span><span class="w"> </span><span class="n">root</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">VectorSchemaRoot</span><span class="p">(</span><span class="n">Arrays</span><span class="p">.</span><span class="na">asList</span><span class="p">(</span><span class="n">intVector</span><span class="p">));</span> |
| <span class="w"> </span><span class="n">root</span><span class="p">.</span><span class="na">setRowCount</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">System</span><span class="p">.</span><span class="na">out</span><span class="p">.</span><span class="na">println</span><span class="p">(</span><span class="s">"[Java] VectorSchemaRoot: \n"</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">root</span><span class="p">.</span><span class="na">contentToTSVString</span><span class="p">());</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">root</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <p>Build the JAR and copy it to the C++ project.</p> |
| <div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>mvn<span class="w"> </span>clean<span class="w"> </span>install |
| $<span class="w"> </span>cp<span class="w"> </span>target/cpptojava-1.0-SNAPSHOT-jar-with-dependencies.jar<span class="w"> </span><c++<span class="w"> </span>project<span class="w"> </span>path>/cpptojava.jar |
| </pre></div> |
| </div> |
| <p><strong>C++ Side</strong></p> |
| <p>This application uses JNI to call Java code, but transfers data (zero-copy) via the C Data Interface instead.</p> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><iostream></span> |
| <span class="cp">#include</span><span class="w"> </span><span class="cpf"><jni.h></span> |
| |
| <span class="cp">#include</span><span class="w"> </span><span class="cpf"><arrow/api.h></span> |
| <span class="cp">#include</span><span class="w"> </span><span class="cpf"><arrow/c/bridge.h></span> |
| |
| <span class="n">JNIEnv</span><span class="w"> </span><span class="o">*</span><span class="nf">CreateVM</span><span class="p">(</span><span class="n">JavaVM</span><span class="w"> </span><span class="o">**</span><span class="n">jvm</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">JNIEnv</span><span class="w"> </span><span class="o">*</span><span class="n">env</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">JavaVMInitArgs</span><span class="w"> </span><span class="n">vm_args</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">JavaVMOption</span><span class="w"> </span><span class="n">options</span><span class="p">[</span><span class="mi">2</span><span class="p">];</span> |
| <span class="w"> </span><span class="n">options</span><span class="p">[</span><span class="mi">0</span><span class="p">].</span><span class="n">optionString</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"-Djava.class.path=cpptojava.jar"</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">options</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="n">optionString</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"-DXcheck:jni:pedantic"</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">vm_args</span><span class="p">.</span><span class="n">version</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">JNI_VERSION_10</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">vm_args</span><span class="p">.</span><span class="n">nOptions</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">vm_args</span><span class="p">.</span><span class="n">options</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">options</span><span class="p">;</span> |
| <span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">status</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">JNI_CreateJavaVM</span><span class="p">(</span><span class="n">jvm</span><span class="p">,</span><span class="w"> </span><span class="p">(</span><span class="kt">void</span><span class="w"> </span><span class="o">**</span><span class="p">)</span><span class="w"> </span><span class="o">&</span><span class="n">env</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">vm_args</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">status</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"</span><span class="se">\n</span><span class="s"><<<<< Unable to Launch JVM >>>>></span><span class="se">\n</span><span class="s">"</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="k">nullptr</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">env</span><span class="p">;</span> |
| <span class="p">}</span> |
| |
| <span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">()</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">JNIEnv</span><span class="w"> </span><span class="o">*</span><span class="n">env</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">JavaVM</span><span class="w"> </span><span class="o">*</span><span class="n">jvm</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">CreateVM</span><span class="p">(</span><span class="o">&</span><span class="n">jvm</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">env</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">EXIT_FAILURE</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">jclass</span><span class="w"> </span><span class="n">javaClassToBeCalledByCpp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">env</span><span class="o">-></span><span class="n">FindClass</span><span class="p">(</span><span class="s">"ToBeCalledByCpp"</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">javaClassToBeCalledByCpp</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">jmethodID</span><span class="w"> </span><span class="n">fillVector</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">env</span><span class="o">-></span><span class="n">GetStaticMethodID</span><span class="p">(</span><span class="n">javaClassToBeCalledByCpp</span><span class="p">,</span> |
| <span class="w"> </span><span class="s">"fillVector"</span><span class="p">,</span> |
| <span class="w"> </span><span class="s">"(JJ)V"</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">fillVector</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowSchema</span><span class="w"> </span><span class="n">arrowSchema</span><span class="p">;</span> |
| <span class="w"> </span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowArray</span><span class="w"> </span><span class="n">arrowArray</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cout</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"</span><span class="se">\n</span><span class="s"><<<<< C++ to Java for Arrays >>>>></span><span class="se">\n</span><span class="s">"</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">env</span><span class="o">-></span><span class="n">CallStaticVoidMethod</span><span class="p">(</span><span class="n">javaClassToBeCalledByCpp</span><span class="p">,</span><span class="w"> </span><span class="n">fillVector</span><span class="p">,</span> |
| <span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="n">jlong</span><span class="o">></span><span class="p">(</span><span class="k">reinterpret_cast</span><span class="o"><</span><span class="kt">uintptr_t</span><span class="o">></span><span class="p">(</span><span class="o">&</span><span class="n">arrowSchema</span><span class="p">)),</span> |
| <span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="n">jlong</span><span class="o">></span><span class="p">(</span><span class="k">reinterpret_cast</span><span class="o"><</span><span class="kt">uintptr_t</span><span class="o">></span><span class="p">(</span><span class="o">&</span><span class="n">arrowArray</span><span class="p">)));</span> |
| <span class="w"> </span><span class="k">auto</span><span class="w"> </span><span class="n">resultImportArray</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">arrow</span><span class="o">::</span><span class="n">ImportArray</span><span class="p">(</span><span class="o">&</span><span class="n">arrowArray</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">arrowSchema</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">shared_ptr</span><span class="o"><</span><span class="n">arrow</span><span class="o">::</span><span class="n">Array</span><span class="o">></span><span class="w"> </span><span class="n">array</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">resultImportArray</span><span class="p">.</span><span class="n">ValueOrDie</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cout</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"[C++] Array: "</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">array</span><span class="o">-></span><span class="n">ToString</span><span class="p">()</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"Could not find fillVector method</span><span class="se">\n</span><span class="s">"</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">EXIT_FAILURE</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="n">jmethodID</span><span class="w"> </span><span class="n">fillVectorSchemaRoot</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">env</span><span class="o">-></span><span class="n">GetStaticMethodID</span><span class="p">(</span><span class="n">javaClassToBeCalledByCpp</span><span class="p">,</span> |
| <span class="w"> </span><span class="s">"fillVectorSchemaRoot"</span><span class="p">,</span> |
| <span class="w"> </span><span class="s">"(JJ)V"</span><span class="p">);</span> |
| <span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">fillVectorSchemaRoot</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowSchema</span><span class="w"> </span><span class="n">arrowSchema</span><span class="p">;</span> |
| <span class="w"> </span><span class="k">struct</span><span class="w"> </span><span class="nc">ArrowArray</span><span class="w"> </span><span class="n">arrowArray</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cout</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"</span><span class="se">\n</span><span class="s"><<<<< C++ to Java for RecordBatch >>>>></span><span class="se">\n</span><span class="s">"</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="n">env</span><span class="o">-></span><span class="n">CallStaticVoidMethod</span><span class="p">(</span><span class="n">javaClassToBeCalledByCpp</span><span class="p">,</span><span class="w"> </span><span class="n">fillVectorSchemaRoot</span><span class="p">,</span> |
| <span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="n">jlong</span><span class="o">></span><span class="p">(</span><span class="k">reinterpret_cast</span><span class="o"><</span><span class="kt">uintptr_t</span><span class="o">></span><span class="p">(</span><span class="o">&</span><span class="n">arrowSchema</span><span class="p">)),</span> |
| <span class="w"> </span><span class="k">static_cast</span><span class="o"><</span><span class="n">jlong</span><span class="o">></span><span class="p">(</span><span class="k">reinterpret_cast</span><span class="o"><</span><span class="kt">uintptr_t</span><span class="o">></span><span class="p">(</span><span class="o">&</span><span class="n">arrowArray</span><span class="p">)));</span> |
| <span class="w"> </span><span class="k">auto</span><span class="w"> </span><span class="n">resultImportVectorSchemaRoot</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">arrow</span><span class="o">::</span><span class="n">ImportRecordBatch</span><span class="p">(</span><span class="o">&</span><span class="n">arrowArray</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">arrowSchema</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">shared_ptr</span><span class="o"><</span><span class="n">arrow</span><span class="o">::</span><span class="n">RecordBatch</span><span class="o">></span><span class="w"> </span><span class="n">recordBatch</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">resultImportVectorSchemaRoot</span><span class="p">.</span><span class="n">ValueOrDie</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cout</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"[C++] RecordBatch: "</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">recordBatch</span><span class="o">-></span><span class="n">ToString</span><span class="p">()</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"Could not find fillVectorSchemaRoot method</span><span class="se">\n</span><span class="s">"</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">EXIT_FAILURE</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cout</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"Could not find ToBeCalledByCpp class</span><span class="se">\n</span><span class="s">"</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">EXIT_FAILURE</span><span class="p">;</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="n">jvm</span><span class="o">-></span><span class="n">DestroyJavaVM</span><span class="p">();</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">EXIT_SUCCESS</span><span class="p">;</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <p>CMakeLists.txt definition file:</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nb">cmake_minimum_required</span><span class="p">(</span><span class="s">VERSION</span><span class="w"> </span><span class="s">3.19</span><span class="p">)</span> |
| <span class="nb">project</span><span class="p">(</span><span class="s">cdatacpptojava</span><span class="p">)</span> |
| <span class="nb">find_package</span><span class="p">(</span><span class="s">JNI</span><span class="w"> </span><span class="s">REQUIRED</span><span class="p">)</span> |
| <span class="nb">find_package</span><span class="p">(</span><span class="s">Arrow</span><span class="w"> </span><span class="s">REQUIRED</span><span class="p">)</span> |
| <span class="nb">message</span><span class="p">(</span><span class="s">STATUS</span><span class="w"> </span><span class="s2">"Arrow version: ${ARROW_VERSION}"</span><span class="p">)</span> |
| <span class="nb">include_directories</span><span class="p">(</span><span class="o">${</span><span class="nv">JNI_INCLUDE_DIRS</span><span class="o">}</span><span class="p">)</span> |
| <span class="nb">set</span><span class="p">(</span><span class="s">CMAKE_CXX_STANDARD</span><span class="w"> </span><span class="s">17</span><span class="p">)</span> |
| <span class="nb">add_executable</span><span class="p">(</span><span class="o">${</span><span class="nv">PROJECT_NAME</span><span class="o">}</span><span class="w"> </span><span class="s">main.cpp</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="s">cdatacpptojava</span><span class="w"> </span><span class="s">PRIVATE</span><span class="w"> </span><span class="s">Arrow::arrow_shared</span><span class="p">)</span> |
| <span class="nb">target_link_libraries</span><span class="p">(</span><span class="s">cdatacpptojava</span><span class="w"> </span><span class="s">PRIVATE</span><span class="w"> </span><span class="o">${</span><span class="nv">JNI_LIBRARIES</span><span class="o">}</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p><strong>Result</strong></p> |
| <div class="highlight-text notranslate"><div class="highlight"><pre><span></span><<<<< C++ to Java for Arrays >>>>> |
| [Java] FieldVector: |
| [1, 2, 3] |
| [C++] Array: [ |
| 1, |
| 2, |
| 3 |
| ] |
| |
| <<<<< C++ to Java for RecordBatch >>>>> |
| [Java] VectorSchemaRoot: |
| age-to-export |
| 10 |
| 20 |
| 30 |
| |
| [C++] RecordBatch: age-to-export: [ |
| 10, |
| 20, |
| 30 |
| ] |
| </pre></div> |
| </div> |
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