io.trino.operator.aggregation.BitwiseXorAggregation 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.trino.operator.aggregation;
import io.trino.operator.aggregation.state.NullableLongState;
import io.trino.spi.block.BlockBuilder;
import io.trino.spi.function.AggregationFunction;
import io.trino.spi.function.AggregationState;
import io.trino.spi.function.CombineFunction;
import io.trino.spi.function.InputFunction;
import io.trino.spi.function.OutputFunction;
import io.trino.spi.function.SqlType;
import io.trino.spi.type.BigintType;
import io.trino.spi.type.StandardTypes;
@AggregationFunction("bitwise_xor_agg")
public final class BitwiseXorAggregation
{
private BitwiseXorAggregation() {}
@InputFunction
public static void bitXor(@AggregationState NullableLongState state, @SqlType(StandardTypes.BIGINT) long value)
{
if (state.isNull()) {
state.setValue(value);
}
else {
state.setValue(state.getValue() ^ value);
}
state.setNull(false);
}
@CombineFunction
public static void combine(@AggregationState NullableLongState state, @AggregationState NullableLongState otherState)
{
if (state.isNull()) {
state.set(otherState);
}
else if (!otherState.isNull()) {
state.setValue(state.getValue() ^ otherState.getValue());
}
}
@OutputFunction(StandardTypes.BIGINT)
public static void output(@AggregationState NullableLongState state, BlockBuilder out)
{
NullableLongState.write(BigintType.BIGINT, state, out);
}
}