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| <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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| <section id="reading-writing-ipc-formats"> |
| <h1>Reading/Writing IPC formats<a class="headerlink" href="#reading-writing-ipc-formats" title="Link to this heading">#</a></h1> |
| <p>Arrow defines two types of binary formats for serializing record batches:</p> |
| <ul class="simple"> |
| <li><p><strong>Streaming format</strong>: for sending an arbitrary number of record |
| batches. The format must be processed from start to end, and does not support |
| random access</p></li> |
| <li><p><strong>File or Random Access format</strong>: for serializing a fixed number of record |
| batches. It supports random access, and thus is very useful when used with |
| memory maps</p></li> |
| </ul> |
| <section id="writing-and-reading-streaming-format"> |
| <h2>Writing and Reading Streaming Format<a class="headerlink" href="#writing-and-reading-streaming-format" title="Link to this heading">#</a></h2> |
| <p>First, let’s populate a <code class="xref py py-class docutils literal notranslate"><span class="pre">VectorSchemaRoot</span></code> with a small batch of records</p> |
| <div class="highlight-Java notranslate"><div class="highlight"><pre><span></span><span class="n">BitVector</span><span class="w"> </span><span class="n">bitVector</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">BitVector</span><span class="p">(</span><span class="s">"boolean"</span><span class="p">,</span><span class="w"> </span><span class="n">allocator</span><span class="p">);</span> |
| <span class="n">VarCharVector</span><span class="w"> </span><span class="n">varCharVector</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">VarCharVector</span><span class="p">(</span><span class="s">"varchar"</span><span class="p">,</span><span class="w"> </span><span class="n">allocator</span><span class="p">);</span> |
| <span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</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="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">bitVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="n">i</span><span class="p">,</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">%</span><span class="w"> </span><span class="mi">2</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="o">?</span><span class="w"> </span><span class="mi">0</span><span class="w"> </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">varCharVector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="n">i</span><span class="p">,</span><span class="w"> </span><span class="p">(</span><span class="s">"test"</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">i</span><span class="p">).</span><span class="na">getBytes</span><span class="p">(</span><span class="n">StandardCharsets</span><span class="p">.</span><span class="na">UTF_8</span><span class="p">));</span> |
| <span class="p">}</span> |
| <span class="n">bitVector</span><span class="p">.</span><span class="na">setValueCount</span><span class="p">(</span><span class="mi">10</span><span class="p">);</span> |
| <span class="n">varCharVector</span><span class="p">.</span><span class="na">setValueCount</span><span class="p">(</span><span class="mi">10</span><span class="p">);</span> |
| |
| <span class="n">List</span><span class="o"><</span><span class="n">Field</span><span class="o">></span><span class="w"> </span><span class="n">fields</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Arrays</span><span class="p">.</span><span class="na">asList</span><span class="p">(</span><span class="n">bitVector</span><span class="p">.</span><span class="na">getField</span><span class="p">(),</span><span class="w"> </span><span class="n">varCharVector</span><span class="p">.</span><span class="na">getField</span><span class="p">());</span> |
| <span class="n">List</span><span class="o"><</span><span class="n">FieldVector</span><span class="o">></span><span class="w"> </span><span class="n">vectors</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Arrays</span><span class="p">.</span><span class="na">asList</span><span class="p">(</span><span class="n">bitVector</span><span class="p">,</span><span class="w"> </span><span class="n">varCharVector</span><span class="p">);</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">fields</span><span class="p">,</span><span class="w"> </span><span class="n">vectors</span><span class="p">);</span> |
| </pre></div> |
| </div> |
| <p>Now, we can begin writing a stream containing some number of these batches. For this we use <code class="xref py py-class docutils literal notranslate"><span class="pre">ArrowStreamWriter</span></code> |
| (DictionaryProvider used for any vectors that are dictionary encoded is optional and can be null))</p> |
| <div class="highlight-Java notranslate"><div class="highlight"><pre><span></span><span class="k">try</span><span class="w"> </span><span class="p">(</span> |
| <span class="w"> </span><span class="n">ByteArrayOutputStream</span><span class="w"> </span><span class="n">out</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">ByteArrayOutputStream</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">ArrowStreamWriter</span><span class="w"> </span><span class="n">writer</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">ArrowStreamWriter</span><span class="p">(</span><span class="n">root</span><span class="p">,</span><span class="w"> </span><span class="cm">/*DictionaryProvider=*/</span><span class="kc">null</span><span class="p">,</span><span class="w"> </span><span class="n">Channels</span><span class="p">.</span><span class="na">newChannel</span><span class="p">(</span><span class="n">out</span><span class="p">));</span> |
| <span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="c1">// ... do write into the ArrowStreamWriter</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <p>Here we used an in-memory stream, but this could have been a socket or some other IO stream. Then we can do</p> |
| <div class="highlight-Java notranslate"><div class="highlight"><pre><span></span><span class="n">writer</span><span class="p">.</span><span class="na">start</span><span class="p">();</span> |
| <span class="c1">// write the first batch</span> |
| <span class="n">writer</span><span class="p">.</span><span class="na">writeBatch</span><span class="p">();</span> |
| |
| <span class="c1">// write another four batches.</span> |
| <span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</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="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="c1">// populate VectorSchemaRoot data and write the second batch</span> |
| <span class="w"> </span><span class="n">BitVector</span><span class="w"> </span><span class="n">childVector1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">BitVector</span><span class="p">)</span><span class="n">root</span><span class="p">.</span><span class="na">getVector</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">VarCharVector</span><span class="w"> </span><span class="n">childVector2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">VarCharVector</span><span class="p">)</span><span class="n">root</span><span class="p">.</span><span class="na">getVector</span><span class="p">(</span><span class="mi">1</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">childVector1</span><span class="p">.</span><span class="na">reset</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">childVector2</span><span class="p">.</span><span class="na">reset</span><span class="p">();</span> |
| <span class="w"> </span><span class="c1">// ... do some populate work here, could be different for each batch</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">writeBatch</span><span class="p">();</span> |
| <span class="p">}</span> |
| |
| <span class="n">writer</span><span class="p">.</span><span class="na">end</span><span class="p">();</span> |
| </pre></div> |
| </div> |
| <p>Note that, since the <code class="xref py py-class docutils literal notranslate"><span class="pre">VectorSchemaRoot</span></code> in the writer is a container that can hold batches, batches flow through |
| <code class="xref py py-class docutils literal notranslate"><span class="pre">VectorSchemaRoot</span></code> as part of a pipeline, so we need to populate data before <code class="docutils literal notranslate"><span class="pre">writeBatch</span></code>, so that later batches |
| could overwrite previous ones.</p> |
| <p>Now the <code class="xref py py-class docutils literal notranslate"><span class="pre">ByteArrayOutputStream</span></code> contains the complete stream which contains 5 record batches. |
| We can read such a stream with <code class="xref py py-class docutils literal notranslate"><span class="pre">ArrowStreamReader</span></code>. Note that the <code class="xref py py-class docutils literal notranslate"><span class="pre">VectorSchemaRoot</span></code> within the reader |
| will be loaded with new values on every call to <code class="xref py py-class docutils literal notranslate"><span class="pre">loadNextBatch()</span></code></p> |
| <div class="highlight-Java notranslate"><div class="highlight"><pre><span></span><span class="k">try</span><span class="w"> </span><span class="p">(</span><span class="n">ArrowStreamReader</span><span class="w"> </span><span class="n">reader</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">ArrowStreamReader</span><span class="p">(</span><span class="k">new</span><span class="w"> </span><span class="n">ByteArrayInputStream</span><span class="p">(</span><span class="n">out</span><span class="p">.</span><span class="na">toByteArray</span><span class="p">()),</span><span class="w"> </span><span class="n">allocator</span><span class="p">))</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="c1">// This will be loaded with new values on every call to loadNextBatch</span> |
| <span class="w"> </span><span class="n">VectorSchemaRoot</span><span class="w"> </span><span class="n">readRoot</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">reader</span><span class="p">.</span><span class="na">getVectorSchemaRoot</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">Schema</span><span class="w"> </span><span class="n">schema</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">readRoot</span><span class="p">.</span><span class="na">getSchema</span><span class="p">();</span> |
| <span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</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="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">5</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">reader</span><span class="p">.</span><span class="na">loadNextBatch</span><span class="p">();</span> |
| <span class="w"> </span><span class="c1">// ... do something with readRoot</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <p>Here we also give a simple example with dictionary encoded vectors</p> |
| <div class="highlight-Java notranslate"><div class="highlight"><pre><span></span><span class="c1">// create provider</span> |
| <span class="n">DictionaryProvider</span><span class="p">.</span><span class="na">MapDictionaryProvider</span><span class="w"> </span><span class="n">provider</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">DictionaryProvider</span><span class="p">.</span><span class="na">MapDictionaryProvider</span><span class="p">();</span> |
| |
| <span class="k">try</span><span class="w"> </span><span class="p">(</span> |
| <span class="w"> </span><span class="kd">final</span><span class="w"> </span><span class="n">VarCharVector</span><span class="w"> </span><span class="n">dictVector</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">VarCharVector</span><span class="p">(</span><span class="s">"dict"</span><span class="p">,</span><span class="w"> </span><span class="n">allocator</span><span class="p">);</span> |
| <span class="w"> </span><span class="kd">final</span><span class="w"> </span><span class="n">VarCharVector</span><span class="w"> </span><span class="n">vector</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">VarCharVector</span><span class="p">(</span><span class="s">"vector"</span><span class="p">,</span><span class="w"> </span><span class="n">allocator</span><span class="p">);</span> |
| <span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="c1">// create dictionary vector</span> |
| <span class="w"> </span><span class="n">dictVector</span><span class="p">.</span><span class="na">allocateNewSafe</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">dictVector</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="s">"aa"</span><span class="p">.</span><span class="na">getBytes</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">dictVector</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="s">"bb"</span><span class="p">.</span><span class="na">getBytes</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">dictVector</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="s">"cc"</span><span class="p">.</span><span class="na">getBytes</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">dictVector</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="c1">// create dictionary</span> |
| <span class="w"> </span><span class="n">Dictionary</span><span class="w"> </span><span class="n">dictionary</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">Dictionary</span><span class="p">(</span><span class="n">dictVector</span><span class="p">,</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">DictionaryEncoding</span><span class="p">(</span><span class="mi">1L</span><span class="p">,</span><span class="w"> </span><span class="kc">false</span><span class="p">,</span><span class="w"> </span><span class="cm">/*indexType=*/</span><span class="kc">null</span><span class="p">));</span> |
| <span class="w"> </span><span class="n">provider</span><span class="p">.</span><span class="na">put</span><span class="p">(</span><span class="n">dictionary</span><span class="p">);</span> |
| |
| <span class="w"> </span><span class="c1">// create original data vector</span> |
| <span class="w"> </span><span class="n">vector</span><span class="p">.</span><span class="na">allocateNewSafe</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">vector</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="s">"bb"</span><span class="p">.</span><span class="na">getBytes</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">vector</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="s">"bb"</span><span class="p">.</span><span class="na">getBytes</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">vector</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="s">"cc"</span><span class="p">.</span><span class="na">getBytes</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">vector</span><span class="p">.</span><span class="na">setSafe</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span><span class="w"> </span><span class="s">"aa"</span><span class="p">.</span><span class="na">getBytes</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">vector</span><span class="p">.</span><span class="na">setValueCount</span><span class="p">(</span><span class="mi">4</span><span class="p">);</span> |
| |
| <span class="w"> </span><span class="c1">// get the encoded vector</span> |
| <span class="w"> </span><span class="n">IntVector</span><span class="w"> </span><span class="n">encodedVector</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">IntVector</span><span class="p">)</span><span class="w"> </span><span class="n">DictionaryEncoder</span><span class="p">.</span><span class="na">encode</span><span class="p">(</span><span class="n">vector</span><span class="p">,</span><span class="w"> </span><span class="n">dictionary</span><span class="p">);</span> |
| |
| <span class="w"> </span><span class="n">ByteArrayOutputStream</span><span class="w"> </span><span class="n">out</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">ByteArrayOutputStream</span><span class="p">();</span> |
| |
| <span class="w"> </span><span class="c1">// create VectorSchemaRoot</span> |
| <span class="w"> </span><span class="n">List</span><span class="o"><</span><span class="n">Field</span><span class="o">></span><span class="w"> </span><span class="n">fields</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Arrays</span><span class="p">.</span><span class="na">asList</span><span class="p">(</span><span class="n">encodedVector</span><span class="p">.</span><span class="na">getField</span><span class="p">());</span> |
| <span class="w"> </span><span class="n">List</span><span class="o"><</span><span class="n">FieldVector</span><span class="o">></span><span class="w"> </span><span class="n">vectors</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Arrays</span><span class="p">.</span><span class="na">asList</span><span class="p">(</span><span class="n">encodedVector</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">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">fields</span><span class="p">,</span><span class="w"> </span><span class="n">vectors</span><span class="p">))</span><span class="w"> </span><span class="p">{</span> |
| |
| <span class="w"> </span><span class="c1">// write data</span> |
| <span class="w"> </span><span class="n">ArrowStreamWriter</span><span class="w"> </span><span class="n">writer</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">ArrowStreamWriter</span><span class="p">(</span><span class="n">root</span><span class="p">,</span><span class="w"> </span><span class="n">provider</span><span class="p">,</span><span class="w"> </span><span class="n">Channels</span><span class="p">.</span><span class="na">newChannel</span><span class="p">(</span><span class="n">out</span><span class="p">));</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">start</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">writeBatch</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">end</span><span class="p">();</span> |
| <span class="w"> </span><span class="p">}</span> |
| |
| <span class="w"> </span><span class="c1">// read data</span> |
| <span class="w"> </span><span class="k">try</span><span class="w"> </span><span class="p">(</span><span class="n">ArrowStreamReader</span><span class="w"> </span><span class="n">reader</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">ArrowStreamReader</span><span class="p">(</span><span class="k">new</span><span class="w"> </span><span class="n">ByteArrayInputStream</span><span class="p">(</span><span class="n">out</span><span class="p">.</span><span class="na">toByteArray</span><span class="p">()),</span><span class="w"> </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">reader</span><span class="p">.</span><span class="na">loadNextBatch</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">VectorSchemaRoot</span><span class="w"> </span><span class="n">readRoot</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">reader</span><span class="p">.</span><span class="na">getVectorSchemaRoot</span><span class="p">();</span> |
| <span class="w"> </span><span class="c1">// get the encoded vector</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="p">(</span><span class="n">IntVector</span><span class="p">)</span><span class="w"> </span><span class="n">readRoot</span><span class="p">.</span><span class="na">getVector</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span> |
| |
| <span class="w"> </span><span class="c1">// get dictionaries and decode the vector</span> |
| <span class="w"> </span><span class="n">Map</span><span class="o"><</span><span class="n">Long</span><span class="p">,</span><span class="w"> </span><span class="n">Dictionary</span><span class="o">></span><span class="w"> </span><span class="n">dictionaryMap</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">reader</span><span class="p">.</span><span class="na">getDictionaryVectors</span><span class="p">();</span> |
| <span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="n">dictionaryId</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">intVector</span><span class="p">.</span><span class="na">getField</span><span class="p">().</span><span class="na">getDictionary</span><span class="p">().</span><span class="na">getId</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">VarCharVector</span><span class="w"> </span><span class="n">varCharVector</span><span class="w"> </span><span class="o">=</span> |
| <span class="w"> </span><span class="p">(</span><span class="n">VarCharVector</span><span class="p">)</span><span class="w"> </span><span class="n">DictionaryEncoder</span><span class="p">.</span><span class="na">decode</span><span class="p">(</span><span class="n">intVector</span><span class="p">,</span><span class="w"> </span><span class="n">dictionaryMap</span><span class="p">.</span><span class="na">get</span><span class="p">(</span><span class="n">dictionaryId</span><span class="p">)))</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="c1">// ... use decoded vector</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| </section> |
| <section id="writing-and-reading-random-access-files"> |
| <h2>Writing and Reading Random Access Files<a class="headerlink" href="#writing-and-reading-random-access-files" title="Link to this heading">#</a></h2> |
| <p>The <code class="xref py py-class docutils literal notranslate"><span class="pre">ArrowFileWriter</span></code> has the same API as <code class="xref py py-class docutils literal notranslate"><span class="pre">ArrowStreamWriter</span></code></p> |
| <div class="highlight-Java notranslate"><div class="highlight"><pre><span></span><span class="k">try</span><span class="w"> </span><span class="p">(</span> |
| <span class="w"> </span><span class="n">ByteArrayOutputStream</span><span class="w"> </span><span class="n">out</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">ByteArrayOutputStream</span><span class="p">();</span> |
| <span class="w"> </span><span class="n">ArrowFileWriter</span><span class="w"> </span><span class="n">writer</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">ArrowFileWriter</span><span class="p">(</span><span class="n">root</span><span class="p">,</span><span class="w"> </span><span class="cm">/*DictionaryProvider=*/</span><span class="kc">null</span><span class="p">,</span><span class="w"> </span><span class="n">Channels</span><span class="p">.</span><span class="na">newChannel</span><span class="p">(</span><span class="n">out</span><span class="p">));</span> |
| <span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">start</span><span class="p">();</span> |
| <span class="w"> </span><span class="c1">// write the first batch</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">writeBatch</span><span class="p">();</span> |
| <span class="w"> </span><span class="c1">// write another four batches.</span> |
| <span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</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="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="c1">// ... do populate work</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">writeBatch</span><span class="p">();</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="w"> </span><span class="n">writer</span><span class="p">.</span><span class="na">end</span><span class="p">();</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <p>The difference between <code class="xref py py-class docutils literal notranslate"><span class="pre">ArrowFileReader</span></code> and <code class="xref py py-class docutils literal notranslate"><span class="pre">ArrowStreamReader</span></code> is that the input source |
| must have a <code class="docutils literal notranslate"><span class="pre">seek</span></code> method for random access. Because we have access to the entire payload, we know the |
| number of record batches in the file, and can read any at random</p> |
| <div class="highlight-Java notranslate"><div class="highlight"><pre><span></span><span class="k">try</span><span class="w"> </span><span class="p">(</span><span class="n">ArrowFileReader</span><span class="w"> </span><span class="n">reader</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">ArrowFileReader</span><span class="p">(</span> |
| <span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">ByteArrayReadableSeekableByteChannel</span><span class="p">(</span><span class="n">out</span><span class="p">.</span><span class="na">toByteArray</span><span class="p">()),</span><span class="w"> </span><span class="n">allocator</span><span class="p">))</span><span class="w"> </span><span class="p">{</span> |
| |
| <span class="w"> </span><span class="c1">// read the 4-th batch</span> |
| <span class="w"> </span><span class="n">ArrowBlock</span><span class="w"> </span><span class="n">block</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">reader</span><span class="p">.</span><span class="na">getRecordBlocks</span><span class="p">().</span><span class="na">get</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">reader</span><span class="p">.</span><span class="na">loadRecordBatch</span><span class="p">(</span><span class="n">block</span><span class="p">);</span> |
| <span class="w"> </span><span class="n">VectorSchemaRoot</span><span class="w"> </span><span class="n">readBatch</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">reader</span><span class="p">.</span><span class="na">getVectorSchemaRoot</span><span class="p">();</span> |
| <span class="p">}</span> |
| </pre></div> |
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