com.facebook.presto.jdbc.internal.spi.block.ArrayElementBlockWriter Maven / Gradle / Ivy
/*
* Licensed 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 com.facebook.presto.jdbc.internal.spi.block;
import com.facebook.presto.jdbc.internal.airlift.slice.Slice;
public class ArrayElementBlockWriter
extends AbstractArrayElementBlock
implements BlockBuilder
{
private final BlockBuilder blockBuilder;
private final int initialBlockBuilderSize;
private int positionsWritten;
public ArrayElementBlockWriter(BlockBuilder blockBuilder, int start)
{
super(start);
this.blockBuilder = blockBuilder;
this.initialBlockBuilderSize = blockBuilder.getSizeInBytes();
}
@Override
protected BlockBuilder getBlock()
{
return blockBuilder;
}
@Override
public int getSizeInBytes()
{
return blockBuilder.getSizeInBytes() - initialBlockBuilderSize;
}
@Override
public BlockBuilder writeByte(int value)
{
blockBuilder.writeByte(value);
return this;
}
@Override
public BlockBuilder writeShort(int value)
{
blockBuilder.writeShort(value);
return this;
}
@Override
public BlockBuilder writeInt(int value)
{
blockBuilder.writeInt(value);
return this;
}
@Override
public BlockBuilder writeLong(long value)
{
blockBuilder.writeLong(value);
return this;
}
@Override
public BlockBuilder writeFloat(float value)
{
blockBuilder.writeFloat(value);
return this;
}
@Override
public BlockBuilder writeDouble(double value)
{
blockBuilder.writeDouble(value);
return this;
}
@Override
public BlockBuilder writeBytes(Slice source, int sourceIndex, int length)
{
blockBuilder.writeBytes(source, sourceIndex, length);
return this;
}
@Override
public BlockBuilder writeObject(Object value)
{
blockBuilder.writeObject(value);
return this;
}
@Override
public BlockBuilder beginBlockEntry()
{
return blockBuilder.beginBlockEntry();
}
@Override
public BlockBuilder appendNull()
{
blockBuilder.appendNull();
entryAdded();
return this;
}
@Override
public BlockBuilder closeEntry()
{
blockBuilder.closeEntry();
entryAdded();
return this;
}
private void entryAdded()
{
positionsWritten++;
}
@Override
public int getPositionCount()
{
return positionsWritten;
}
@Override
public Block build()
{
throw new UnsupportedOperationException();
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder("ArrayElementBlockWriter{");
sb.append("positionCount=").append(getPositionCount());
sb.append('}');
return sb.toString();
}
}