vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/propagationpolicies/ConstantPropertyPropagationPolicy.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.vxquery.compiler.rewriter.rules.propagationpolicies;

import java.util.List;

public class ConstantPropertyPropagationPolicy<P> implements IPropertyPropagationPolicy<P>{
    
    private final P property;
    
    public ConstantPropertyPropagationPolicy(P property) {
        this.property = property;
    }
    
    /**
     * The argument does not change the result of this property.
     */
    @Override
    public P propagate(List<P> argProperties) {
        return property;
    }

}