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/*
* 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.tinkerpop.gremlin.process.traversal.step.util;
import org.apache.tinkerpop.gremlin.structure.Element;
import java.io.Serializable;
import java.util.Comparator;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
public final class ElementValueComparator<V> implements Comparator<Element>, Serializable {
private final String propertyKey;
private final Comparator<V> valueComparator;
public ElementValueComparator(final String propertyKey, final Comparator<V> valueComparator) {
this.propertyKey = propertyKey;
this.valueComparator = valueComparator;
}
public String getPropertyKey() {
return this.propertyKey;
}
public Comparator<V> getValueComparator() {
return this.valueComparator;
}
@Override
public int compare(final Element elementA, final Element elementB) {
return this.valueComparator.compare(elementA.value(this.propertyKey), elementB.value(this.propertyKey));
}
@Override
public String toString() {
return this.valueComparator.toString() + '(' + this.propertyKey + ')';
}
}