001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.reef.io.network.group.impl; 020 021import org.apache.reef.io.network.group.api.GroupChanges; 022 023import javax.annotation.concurrent.Immutable; 024import javax.annotation.concurrent.ThreadSafe; 025 026@Immutable 027@ThreadSafe 028public class GroupChangesImpl implements GroupChanges { 029 030 private final boolean changes; 031 032 public GroupChangesImpl(final boolean changes) { 033 this.changes = changes; 034 } 035 036 @Override 037 public boolean exist() { 038 return changes; 039 } 040 041 @Override 042 public String toString() { 043 return "Changes: " + changes; 044 } 045}