1 /* 2 * Copyright 2009 Red Hat, Inc. 3 * 4 * Red Hat licenses this file to you under the Apache License, version 2.0 5 * (the "License"); you may not use this file except in compliance with the 6 * License. You may obtain a copy of the License at: 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations 14 * under the License. 15 */ 16 package org.jboss.netty.util; 17 18 /** 19 * A utility class that provides the convenient shutdown of 20 * {@link ExternalResourceReleasable}s. 21 * 22 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a> 23 * @author <a href="http://gleamynode.net/">Trustin Lee</a> 24 * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $ 25 */ 26 public class ExternalResourceUtil { 27 28 /** 29 * Releases the specified {@link ExternalResourceReleasable}s. 30 */ 31 public static void release(ExternalResourceReleasable... releasables) { 32 ExternalResourceReleasable[] releasablesCopy = 33 new ExternalResourceReleasable[releasables.length]; 34 35 for (int i = 0; i < releasables.length; i ++) { 36 if (releasables[i] == null) { 37 throw new NullPointerException("releasables[" + i + "]"); 38 } 39 releasablesCopy[i] = releasables[i]; 40 } 41 42 for (ExternalResourceReleasable e: releasablesCopy) { 43 e.releaseExternalResources(); 44 } 45 } 46 47 private ExternalResourceUtil() { 48 super(); 49 } 50 }