| /** |
| * 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.hadoop.yarn.server.resourcemanager.scheduler.constraint; |
| |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| |
| /** |
| * A class implements Evaluable interface represents the internal state |
| * of the class can be changed against a given target. |
| * @param <T> a target to evaluate against |
| */ |
| public interface Evaluable<T> { |
| |
| /** |
| * Evaluate against a given target, this process changes the internal state |
| * of current class. |
| * |
| * @param target a generic type target that impacts this evaluation. |
| * @throws YarnException |
| */ |
| void evaluate(T target) throws YarnException; |
| } |