asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/scalar/ScalarMaxDistinctAggregateDescriptor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.asterix.runtime.aggregates.scalar;

import org.apache.asterix.om.functions.BuiltinFunctions;
import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
import org.apache.asterix.runtime.aggregates.std.MaxAggregateDescriptor;
import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;

public class ScalarMaxDistinctAggregateDescriptor extends AbstractScalarDistinctAggregateDescriptor {

    private static final long serialVersionUID = 1L;

    public static final IFunctionDescriptorFactory FACTORY =
            createDescriptorFactory(ScalarMaxDistinctAggregateDescriptor::new);

    private ScalarMaxDistinctAggregateDescriptor() {
        super(MaxAggregateDescriptor.FACTORY);
    }

    @Override
    public FunctionIdentifier getIdentifier() {
        return BuiltinFunctions.SCALAR_MAX_DISTINCT;
    }

    @Override
    public void setImmutableStates(Object... states) {
        super.setImmutableStates(states);
        aggFuncDesc.setImmutableStates(itemType);
    }
}