/*
* 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.metadata;
import com.facebook.presto.spi.function.OperatorType;
import com.facebook.presto.spi.type.TypeSignature;
import java.util.List;
import static com.facebook.presto.metadata.FunctionRegistry.mangleOperatorName;
public abstract class SqlOperator
extends SqlScalarFunction
{
protected SqlOperator(OperatorType operatorType, List<TypeVariableConstraint> typeVariableConstraints, List<LongVariableConstraint> longVariableConstraints, TypeSignature returnType, List<TypeSignature> argumentTypes)
{
// TODO This should take Signature!
super(new Signature(
mangleOperatorName(operatorType),
FunctionKind.SCALAR,
typeVariableConstraints,
longVariableConstraints,
returnType,
argumentTypes,
false));
}
@Override
public final boolean isHidden()
{
return true;
}
@Override
public final boolean isDeterministic()
{
return true;
}
@Override
public final String getDescription()
{
// Operators are internal, and don't need a description
return null;
}
}