HierarchicalPrioritizer.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 gobblin.util.request_allocation;

import java.util.Comparator;


/**
 * A {@link Comparator} for {@link Request}s that can also compare {@link Requestor}s, and which guarantees that
 * given {@link Request}s r1, r2, then r1.getRequestor > r2.getRequestor implies r1 > r2.
 */
public interface HierarchicalPrioritizer<T extends Request> extends Comparator<T> {
  int compareRequestors(Requestor<T> r1, Requestor<T> r2);
}