package com.facebook.presto.operator.scalar;
/*
* 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.
*/
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.function.OperatorDependency;
import com.facebook.presto.spi.function.ScalarOperator;
import com.facebook.presto.spi.function.SqlNullable;
import com.facebook.presto.spi.function.SqlType;
import com.facebook.presto.spi.function.TypeParameter;
import com.facebook.presto.spi.type.StandardTypes;
import com.facebook.presto.spi.type.Type;
import java.lang.invoke.MethodHandle;
import static com.facebook.presto.spi.function.OperatorType.EQUAL;
import static com.facebook.presto.spi.function.OperatorType.HASH_CODE;
import static com.facebook.presto.spi.function.OperatorType.NOT_EQUAL;
@ScalarOperator(NOT_EQUAL)
public final class MapNotEqualOperator
{
private MapNotEqualOperator() {}
@TypeParameter("K")
@TypeParameter("V")
@SqlNullable
@SqlType(StandardTypes.BOOLEAN)
public static Boolean notEqual(
@OperatorDependency(operator = EQUAL, returnType = StandardTypes.BOOLEAN, argumentTypes = {"K", "K"}) MethodHandle keyEqualsFunction,
@OperatorDependency(operator = HASH_CODE, returnType = StandardTypes.BIGINT, argumentTypes = {"K"}) MethodHandle keyHashcodeFunction,
@OperatorDependency(operator = EQUAL, returnType = StandardTypes.BOOLEAN, argumentTypes = {"V", "V"}) MethodHandle valueEqualsFunction,
@TypeParameter("K") Type keyType,
@TypeParameter("V") Type valueType,
@SqlType("map(K,V)") Block left,
@SqlType("map(K,V)") Block right)
{
Boolean equals = MapEqualOperator.equals(keyEqualsFunction, keyHashcodeFunction, valueEqualsFunction, keyType, valueType, left, right);
if (equals == null) {
return null;
}
return !equals;
}
}