| /* |
| * 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 static org.apache.arrow.vector.NullCheckingForGet.NULL_CHECKING_ENABLED; |
| |
| import org.apache.arrow.memory.BufferAllocator; |
| import org.apache.arrow.vector.complex.impl.SmallIntReaderImpl; |
| import org.apache.arrow.vector.complex.reader.FieldReader; |
| import org.apache.arrow.vector.holders.NullableSmallIntHolder; |
| import org.apache.arrow.vector.holders.SmallIntHolder; |
| import org.apache.arrow.vector.types.Types.MinorType; |
| 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; |
| |
| /** |
| * SmallIntVector implements a fixed width (2 bytes) vector of |
| * short values which could be null. A validity buffer (bit vector) is |
| * maintained to track which elements in the vector are null. |
| */ |
| public final class SmallIntVector extends BaseFixedWidthVector implements BaseIntVector { |
| public static final byte TYPE_WIDTH = 2; |
| private final FieldReader reader; |
| |
| /** |
| * Instantiate a SmallIntVector. This doesn't allocate any memory for |
| * the data in vector. |
| * |
| * @param name name of the vector |
| * @param allocator allocator for memory management. |
| */ |
| public SmallIntVector(String name, BufferAllocator allocator) { |
| this(name, FieldType.nullable(MinorType.SMALLINT.getType()), allocator); |
| } |
| |
| /** |
| * Instantiate a SmallIntVector. 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 SmallIntVector(String name, FieldType fieldType, BufferAllocator allocator) { |
| this(new Field(name, fieldType, null), allocator); |
| } |
| |
| /** |
| * Instantiate a SmallIntVector. 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 SmallIntVector(Field field, BufferAllocator allocator) { |
| super(field, allocator, TYPE_WIDTH); |
| reader = new SmallIntReaderImpl(SmallIntVector.this); |
| } |
| |
| /** |
| * 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.SMALLINT; |
| } |
| |
| |
| /*----------------------------------------------------------------* |
| | | |
| | 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 short get(int index) throws IllegalStateException { |
| if (NULL_CHECKING_ENABLED && isSet(index) == 0) { |
| throw new IllegalStateException("Value at index is null"); |
| } |
| return valueBuffer.getShort(index * TYPE_WIDTH); |
| } |
| |
| /** |
| * 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 |
| */ |
| public void get(int index, NullableSmallIntHolder holder) { |
| if (isSet(index) == 0) { |
| holder.isSet = 0; |
| return; |
| } |
| holder.isSet = 1; |
| holder.value = valueBuffer.getShort(index * TYPE_WIDTH); |
| } |
| |
| /** |
| * Same as {@link #get(int)}. |
| * |
| * @param index position of element |
| * @return element at given index |
| */ |
| public Short getObject(int index) { |
| if (isSet(index) == 0) { |
| return null; |
| } else { |
| return valueBuffer.getShort(index * TYPE_WIDTH); |
| } |
| } |
| |
| /*----------------------------------------------------------------* |
| | | |
| | vector value setter methods | |
| | | |
| *----------------------------------------------------------------*/ |
| |
| |
| private void setValue(int index, int value) { |
| valueBuffer.setShort(index * TYPE_WIDTH, value); |
| } |
| |
| private void setValue(int index, short value) { |
| valueBuffer.setShort(index * TYPE_WIDTH, value); |
| } |
| |
| /** |
| * Set the element at the given index to the given value. |
| * |
| * @param index position of element |
| * @param value value of element |
| */ |
| public void set(int index, int value) { |
| BitVectorHelper.setValidityBitToOne(validityBuffer, index); |
| setValue(index, value); |
| } |
| |
| /** |
| * Set the element at the given index to the given value. |
| * |
| * @param index position of element |
| * @param value value of element |
| */ |
| public void set(int index, short value) { |
| BitVectorHelper.setValidityBitToOne(validityBuffer, index); |
| setValue(index, value); |
| } |
| |
| /** |
| * Set the element at the given index to the value set in data holder. |
| * If the value in holder is not indicated as set, element in the |
| * at the given index will be null. |
| * |
| * @param index position of element |
| * @param holder nullable data holder for value of element |
| */ |
| public void set(int index, NullableSmallIntHolder holder) throws IllegalArgumentException { |
| if (holder.isSet < 0) { |
| throw new IllegalArgumentException(); |
| } else if (holder.isSet > 0) { |
| BitVectorHelper.setValidityBitToOne(validityBuffer, index); |
| setValue(index, holder.value); |
| } else { |
| BitVectorHelper.setValidityBit(validityBuffer, index, 0); |
| } |
| } |
| |
| /** |
| * Set the element at the given index to the value set in data holder. |
| * |
| * @param index position of element |
| * @param holder data holder for value of element |
| */ |
| public void set(int index, SmallIntHolder holder) { |
| BitVectorHelper.setValidityBitToOne(validityBuffer, index); |
| setValue(index, holder.value); |
| } |
| |
| /** |
| * Same as {@link #set(int, int)} 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 value value of element |
| */ |
| public void setSafe(int index, int value) { |
| handleSafe(index); |
| set(index, value); |
| } |
| |
| /** |
| * Same as {@link #set(int, short)} 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 value value of element |
| */ |
| public void setSafe(int index, short value) { |
| handleSafe(index); |
| set(index, value); |
| } |
| |
| /** |
| * Same as {@link #set(int, NullableSmallIntHolder)} 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 holder nullable data holder for value of element |
| */ |
| public void setSafe(int index, NullableSmallIntHolder holder) throws IllegalArgumentException { |
| handleSafe(index); |
| set(index, holder); |
| } |
| |
| /** |
| * Same as {@link #set(int, SmallIntHolder)} 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 holder data holder for value of element |
| */ |
| public void setSafe(int index, SmallIntHolder holder) { |
| handleSafe(index); |
| set(index, holder); |
| } |
| |
| /** |
| * Store the given value at a particular position in the vector. isSet indicates |
| * whether the value is NULL or not. |
| * |
| * @param index position of the new value |
| * @param isSet 0 for NULL value, 1 otherwise |
| * @param value element value |
| */ |
| public void set(int index, int isSet, short value) { |
| if (isSet > 0) { |
| set(index, value); |
| } else { |
| BitVectorHelper.setValidityBit(validityBuffer, index, 0); |
| } |
| } |
| |
| /** |
| * Same as {@link #set(int, int, short)} except that it handles the case |
| * when index is greater than or equal to current value capacity of the |
| * vector. |
| * |
| * @param index position of the new value |
| * @param isSet 0 for NULL value, 1 otherwise |
| * @param value element value |
| */ |
| public void setSafe(int index, int isSet, short value) { |
| handleSafe(index); |
| set(index, isSet, value); |
| } |
| |
| /** |
| * 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 short get(final ArrowBuf buffer, final int index) { |
| return buffer.getShort(index * TYPE_WIDTH); |
| } |
| |
| |
| /*----------------------------------------------------------------* |
| | | |
| | 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((SmallIntVector) to); |
| } |
| |
| @Override |
| public void setWithPossibleTruncate(int index, long value) { |
| this.setSafe(index, (int) value); |
| } |
| |
| @Override |
| public void setUnsafeWithPossibleTruncate(int index, long value) { |
| this.set(index, (int) value); |
| } |
| |
| @Override |
| public long getValueAsLong(int index) { |
| return this.get(index); |
| } |
| |
| private class TransferImpl implements TransferPair { |
| SmallIntVector to; |
| |
| public TransferImpl(String ref, BufferAllocator allocator) { |
| to = new SmallIntVector(ref, field.getFieldType(), allocator); |
| } |
| |
| public TransferImpl(SmallIntVector to) { |
| this.to = to; |
| } |
| |
| @Override |
| public SmallIntVector 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, SmallIntVector.this); |
| } |
| } |
| } |