io.prestosql.type.CodePointsType 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 io.prestosql.type;
import io.airlift.slice.Slice;
import io.airlift.slice.Slices;
import io.prestosql.spi.block.Block;
import io.prestosql.spi.block.BlockBuilder;
import io.prestosql.spi.connector.ConnectorSession;
import io.prestosql.spi.type.AbstractVariableWidthType;
import io.prestosql.spi.type.TypeSignature;
public class CodePointsType
extends AbstractVariableWidthType
{
public static final CodePointsType CODE_POINTS = new CodePointsType();
public static final String NAME = "CodePoints";
private CodePointsType()
{
super(new TypeSignature(NAME), int[].class);
}
@Override
public Object getObjectValue(ConnectorSession session, Block block, int position)
{
throw new UnsupportedOperationException();
}
@Override
public void appendTo(Block block, int position, BlockBuilder blockBuilder)
{
throw new UnsupportedOperationException();
}
@Override
public Object getObject(Block block, int position)
{
if (block.isNull(position)) {
return null;
}
Slice slice = block.getSlice(position, 0, block.getSliceLength(position));
int[] codePoints = new int[slice.length() / Integer.BYTES];
slice.getBytes(0, Slices.wrappedIntArray(codePoints));
return codePoints;
}
@Override
public void writeObject(BlockBuilder blockBuilder, Object value)
{
Slice slice = Slices.wrappedIntArray((int[]) value);
blockBuilder.writeBytes(slice, 0, slice.length()).closeEntry();
}
}