| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.arrow.vector; |
| |
| import org.apache.arrow.memory.BufferAllocator; |
| import org.apache.arrow.util.Preconditions; |
| import org.apache.arrow.vector.complex.impl.FixedSizeBinaryReaderImpl; |
| import org.apache.arrow.vector.complex.reader.FieldReader; |
| import org.apache.arrow.vector.holders.FixedSizeBinaryHolder; |
| import org.apache.arrow.vector.holders.NullableFixedSizeBinaryHolder; |
| import org.apache.arrow.vector.types.Types.MinorType; |
| import org.apache.arrow.vector.types.pojo.ArrowType.FixedSizeBinary; |
| import org.apache.arrow.vector.types.pojo.Field; |
| import org.apache.arrow.vector.types.pojo.FieldType; |
| import org.apache.arrow.vector.util.TransferPair; |
| |
| import io.netty.buffer.ArrowBuf; |
| |
| /** |
| * FixedSizeBinaryVector implements a fixed width vector of |
| * binary values which could be null. A validity buffer (bit vector) is |
| * maintained to track which elements in the vector are null. |
| */ |
| public class FixedSizeBinaryVector extends BaseFixedWidthVector { |
| private final int byteWidth; |
| private final FieldReader reader; |
| |
| /** |
| * Instantiate a FixedSizeBinaryVector. This doesn't allocate any memory for |
| * the data in vector. |
| * |
| * @param name name of the vector |
| * @param allocator allocator for memory management. |
| * @param byteWidth byte width of the binary values |
| */ |
| public FixedSizeBinaryVector(String name, BufferAllocator allocator, int byteWidth) { |
| this(name, FieldType.nullable(new FixedSizeBinary(byteWidth)), allocator); |
| } |
| |
| /** |
| * Instantiate a FixedSizeBinaryVector. This doesn't allocate any memory for |
| * the data in vector. |
| * |
| * @param name name of the vector |
| * @param fieldType type of Field materialized by this vector |
| * @param allocator allocator for memory management. |
| */ |
| public FixedSizeBinaryVector(String name, FieldType fieldType, BufferAllocator allocator) { |
| this(new Field(name, fieldType, null), allocator); |
| } |
| |
| /** |
| * Instantiate a FixedSizeBinaryVector. This doesn't allocate any memory for |
| * the data in vector. |
| * |
| * @param field field materialized by this vector |
| * @param allocator allocator for memory management. |
| */ |
| public FixedSizeBinaryVector(Field field, BufferAllocator allocator) { |
| super(field, allocator, ((FixedSizeBinary) field.getFieldType().getType()).getByteWidth()); |
| reader = new FixedSizeBinaryReaderImpl(FixedSizeBinaryVector.this); |
| byteWidth = ((FixedSizeBinary) field.getFieldType().getType()).getByteWidth(); |
| } |
| |
| /** |
| * Get a reader that supports reading values from this vector. |
| * |
| * @return Field Reader for this vector |
| */ |
| @Override |
| public FieldReader getReader() { |
| return reader; |
| } |
| |
| /** |
| * Get minor type for this vector. The vector holds values belonging |
| * to a particular type. |
| * |
| * @return {@link org.apache.arrow.vector.types.Types.MinorType} |
| */ |
| @Override |
| public MinorType getMinorType() { |
| return MinorType.FIXEDSIZEBINARY; |
| } |
| |
| |
| /*----------------------------------------------------------------* |
| | | |
| | vector value retrieval methods | |
| | | |
| *----------------------------------------------------------------*/ |
| |
| /** |
| * Get the element at the given index from the vector. |
| * |
| * @param index position of element |
| * @return element at given index |
| */ |
| public byte[] get(int index) { |
| assert index >= 0; |
| if (isSet(index) == 0) { |
| return null; |
| } |
| final byte[] dst = new byte[byteWidth]; |
| valueBuffer.getBytes(index * byteWidth, dst, 0, byteWidth); |
| return dst; |
| } |
| |
| /** |
| * Get the element at the given index from the vector and |
| * sets the state in holder. If element at given index |
| * is null, holder.isSet will be zero. |
| * |
| * @param index position of element |
| * @param holder nullable holder to carry the buffer |
| */ |
| public void get(int index, NullableFixedSizeBinaryHolder holder) { |
| assert index >= 0; |
| if (isSet(index) == 0) { |
| holder.isSet = 0; |
| return; |
| } |
| holder.isSet = 1; |
| holder.buffer = valueBuffer.slice(index * byteWidth, byteWidth); |
| } |
| |
| /** |
| * Same as {@link #get(int)}. |
| * |
| * @param index position of element |
| * @return element at given index |
| */ |
| @Override |
| public byte[] getObject(int index) { |
| return get(index); |
| } |
| |
| public int getByteWidth() { |
| return byteWidth; |
| } |
| |
| |
| /*----------------------------------------------------------------* |
| | | |
| | vector value setter methods | |
| | | |
| *----------------------------------------------------------------*/ |
| |
| /** Sets the value at index to the provided one. */ |
| public void set(int index, byte[] value) { |
| assert index >= 0; |
| Preconditions.checkNotNull(value, "expecting a valid byte array"); |
| assert byteWidth <= value.length; |
| BitVectorHelper.setValidityBitToOne(validityBuffer, index); |
| valueBuffer.setBytes(index * byteWidth, value, 0, byteWidth); |
| } |
| |
| /** |
| * Same as {@link #set(int, byte[])} but reallocates if <code>index</code> |
| * is larger than capacity. |
| */ |
| public void setSafe(int index, byte[] value) { |
| handleSafe(index); |
| set(index, value); |
| } |
| |
| /** |
| * Sets the value if isSet is positive, otherwise sets the index to null/invalid. |
| */ |
| public void set(int index, int isSet, byte[] value) { |
| if (isSet > 0) { |
| set(index, value); |
| } else { |
| BitVectorHelper.setValidityBit(validityBuffer, index, 0); |
| } |
| } |
| |
| public void setSafe(int index, int isSet, byte[] value) { |
| handleSafe(index); |
| set(index, isSet, value); |
| } |
| |
| /** |
| * Set the element at the given index to the given value. |
| * |
| * @param index position of element |
| * @param buffer ArrowBuf containing binary value. |
| */ |
| public void set(int index, ArrowBuf buffer) { |
| assert index >= 0; |
| assert byteWidth <= buffer.capacity(); |
| BitVectorHelper.setValidityBitToOne(validityBuffer, index); |
| valueBuffer.setBytes(index * byteWidth, buffer, 0, byteWidth); |
| } |
| |
| /** |
| * Same as {@link #set(int, ArrowBuf)} except that it handles the |
| * case when index is greater than or equal to existing |
| * value capacity {@link #getValueCapacity()}. |
| * |
| * @param index position of element |
| * @param buffer ArrowBuf containing binary value. |
| */ |
| public void setSafe(int index, ArrowBuf buffer) { |
| handleSafe(index); |
| set(index, buffer); |
| } |
| |
| /** |
| * Set the element at the given index to the given value. |
| * |
| * @param index position of element |
| * @param buffer ArrowBuf containing binary value. |
| */ |
| public void set(int index, int isSet, ArrowBuf buffer) { |
| if (isSet > 0) { |
| set(index, buffer); |
| } else { |
| BitVectorHelper.setValidityBit(validityBuffer, index, 0); |
| } |
| } |
| |
| /** |
| * Same as {@link #set(int, ArrowBuf)} except that it handles the |
| * case when index is greater than or equal to existing |
| * value capacity {@link #getValueCapacity()}. |
| * |
| * @param index position of element |
| * @param buffer ArrowBuf containing binary value. |
| */ |
| public void setSafe(int index, int isSet, ArrowBuf buffer) { |
| handleSafe(index); |
| set(index, isSet, buffer); |
| } |
| |
| /** |
| * Set the variable length element at the specified index to the data |
| * buffer supplied in the holder. |
| * |
| * @param index position of the element to set |
| * @param holder holder that carries data buffer. |
| */ |
| public void set(int index, FixedSizeBinaryHolder holder) { |
| assert holder.byteWidth == byteWidth; |
| set(index, holder.buffer); |
| } |
| |
| /** |
| * Same as {@link #set(int, FixedSizeBinaryHolder)} except that it handles the |
| * case where index and length of new element are beyond the existing |
| * capacity of the vector. |
| * |
| * @param index position of the element to set |
| * @param holder holder that carries data buffer. |
| */ |
| public void setSafe(int index, FixedSizeBinaryHolder holder) { |
| handleSafe(index); |
| set(index, holder); |
| } |
| |
| /** |
| * Set the variable length element at the specified index to the data |
| * buffer supplied in the holder. |
| * |
| * @param index position of the element to set |
| * @param holder holder that carries data buffer. |
| */ |
| public void set(int index, NullableFixedSizeBinaryHolder holder) { |
| assert holder.byteWidth == byteWidth; |
| if (holder.isSet < 0) { |
| throw new IllegalArgumentException("holder has a negative isSet value"); |
| } else if (holder.isSet > 0) { |
| set(index, holder.buffer); |
| } else { |
| BitVectorHelper.setValidityBit(validityBuffer, index, 0); |
| } |
| } |
| |
| /** |
| * Same as {@link #set(int, NullableFixedSizeBinaryHolder)} except that it handles the |
| * case where index and length of new element are beyond the existing |
| * capacity of the vector. |
| * |
| * @param index position of the element to set |
| * @param holder holder that carries data buffer. |
| */ |
| public void setSafe(int index, NullableFixedSizeBinaryHolder holder) { |
| handleSafe(index); |
| set(index, holder); |
| } |
| |
| /** |
| * Given a data buffer, get the value stored at a particular position |
| * in the vector. |
| * |
| * <p>This method should not be used externally. |
| * |
| * @param buffer data buffer |
| * @param index position of the element. |
| * @return value stored at the index. |
| */ |
| public static byte[] get(final ArrowBuf buffer, final int index, final int byteWidth) { |
| final byte[] dst = new byte[byteWidth]; |
| buffer.getBytes(index * byteWidth, dst, 0, byteWidth); |
| return dst; |
| } |
| |
| /*----------------------------------------------------------------* |
| | | |
| | vector transfer | |
| | | |
| *----------------------------------------------------------------*/ |
| |
| |
| /** |
| * Construct a TransferPair comprising of this and and a target vector of |
| * the same type. |
| * |
| * @param ref name of the target vector |
| * @param allocator allocator for the target vector |
| * @return {@link TransferPair} |
| */ |
| @Override |
| public TransferPair getTransferPair(String ref, BufferAllocator allocator) { |
| return new TransferImpl(ref, allocator); |
| } |
| |
| /** |
| * Construct a TransferPair with a desired target vector of the same type. |
| * |
| * @param to target vector |
| * @return {@link TransferPair} |
| */ |
| @Override |
| public TransferPair makeTransferPair(ValueVector to) { |
| return new TransferImpl((FixedSizeBinaryVector) to); |
| } |
| |
| private class TransferImpl implements TransferPair { |
| FixedSizeBinaryVector to; |
| |
| public TransferImpl(String ref, BufferAllocator allocator) { |
| to = new FixedSizeBinaryVector(ref, allocator, FixedSizeBinaryVector.this.byteWidth); |
| } |
| |
| public TransferImpl(FixedSizeBinaryVector to) { |
| this.to = to; |
| } |
| |
| @Override |
| public FixedSizeBinaryVector getTo() { |
| return to; |
| } |
| |
| @Override |
| public void transfer() { |
| transferTo(to); |
| } |
| |
| @Override |
| public void splitAndTransfer(int startIndex, int length) { |
| splitAndTransferTo(startIndex, length, to); |
| } |
| |
| @Override |
| public void copyValueSafe(int fromIndex, int toIndex) { |
| to.copyFromSafe(fromIndex, toIndex, FixedSizeBinaryVector.this); |
| } |
| } |
| } |