/*
* 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.spi.type;
import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.block.BlockBuilder;
import com.facebook.presto.spi.block.BlockBuilderStatus;
import com.facebook.presto.spi.block.ByteArrayBlockBuilder;
import static com.facebook.presto.spi.type.TypeSignature.parseTypeSignature;
public final class BooleanType
extends AbstractType
implements FixedWidthType
{
public static final BooleanType BOOLEAN = new BooleanType();
private BooleanType()
{
super(parseTypeSignature(StandardTypes.BOOLEAN), boolean.class);
}
@Override
public int getFixedSize()
{
return Byte.BYTES;
}
@Override
public BlockBuilder createBlockBuilder(BlockBuilderStatus blockBuilderStatus, int expectedEntries, int expectedBytesPerEntry)
{
return new ByteArrayBlockBuilder(
blockBuilderStatus,
Math.min(expectedEntries, blockBuilderStatus.getMaxBlockSizeInBytes() / Byte.BYTES));
}
@Override
public BlockBuilder createBlockBuilder(BlockBuilderStatus blockBuilderStatus, int expectedEntries)
{
return createBlockBuilder(blockBuilderStatus, expectedEntries, Byte.BYTES);
}
@Override
public BlockBuilder createFixedSizeBlockBuilder(int positionCount)
{
return new ByteArrayBlockBuilder(new BlockBuilderStatus(), positionCount);
}
@Override
public boolean isComparable()
{
return true;
}
@Override
public boolean isOrderable()
{
return true;
}
@Override
public Object getObjectValue(ConnectorSession session, Block block, int position)
{
if (block.isNull(position)) {
return null;
}
return block.getByte(position, 0) != 0;
}
@Override
public boolean equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition)
{
boolean leftValue = leftBlock.getByte(leftPosition, 0) != 0;
boolean rightValue = rightBlock.getByte(rightPosition, 0) != 0;
return leftValue == rightValue;
}
@Override
public long hash(Block block, int position)
{
boolean value = block.getByte(position, 0) != 0;
return value ? 1231 : 1237;
}
@Override
public int compareTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition)
{
boolean leftValue = leftBlock.getByte(leftPosition, 0) != 0;
boolean rightValue = rightBlock.getByte(rightPosition, 0) != 0;
return Boolean.compare(leftValue, rightValue);
}
@Override
public void appendTo(Block block, int position, BlockBuilder blockBuilder)
{
if (block.isNull(position)) {
blockBuilder.appendNull();
}
else {
blockBuilder.writeByte(block.getByte(position, 0)).closeEntry();
}
}
@Override
public boolean getBoolean(Block block, int position)
{
return block.getByte(position, 0) != 0;
}
@Override
public void writeBoolean(BlockBuilder blockBuilder, boolean value)
{
blockBuilder.writeByte(value ? 1 : 0).closeEntry();
}
@Override
public boolean equals(Object other)
{
return other == BOOLEAN;
}
@Override
public int hashCode()
{
return getClass().hashCode();
}
}