| /* |
| * 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.shiro.util; |
| |
| import org.apache.shiro.ShiroException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Collection; |
| |
| |
| /** |
| * Utility class to help call {@link org.apache.shiro.util.Initializable#init() Initializable.init()} and |
| * {@link org.apache.shiro.util.Destroyable#destroy() Destroyable.destroy()} methods cleanly on any object. |
| * |
| * @since 0.2 |
| */ |
| public abstract class LifecycleUtils { |
| |
| private static final Logger log = LoggerFactory.getLogger(LifecycleUtils.class); |
| |
| public static void init(Object o) throws ShiroException { |
| if (o instanceof Initializable) { |
| init((Initializable) o); |
| } |
| } |
| |
| public static void init(Initializable initializable) throws ShiroException { |
| initializable.init(); |
| } |
| |
| /** |
| * Calls {@link #init(Object) init} for each object in the collection. If the collection is {@code null} or empty, |
| * this method returns quietly. |
| * |
| * @param c the collection containing objects to {@link #init init}. |
| * @throws ShiroException if unable to initialize one or more instances. |
| * @since 0.9 |
| */ |
| public static void init(Collection c) throws ShiroException { |
| if (c == null || c.isEmpty()) { |
| return; |
| } |
| for (Object o : c) { |
| init(o); |
| } |
| } |
| |
| public static void destroy(Object o) { |
| if (o instanceof Destroyable) { |
| destroy((Destroyable) o); |
| } else if (o instanceof Collection) { |
| destroy((Collection)o); |
| } |
| } |
| |
| public static void destroy(Destroyable d) { |
| if (d != null) { |
| try { |
| d.destroy(); |
| } catch (Throwable t) { |
| if (log.isDebugEnabled()) { |
| String msg = "Unable to cleanly destroy instance [" + d + "] of type [" + d.getClass().getName() + "]."; |
| log.debug(msg, t); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Calls {@link #destroy(Object) destroy} for each object in the collection. |
| * If the collection is {@code null} or empty, this method returns quietly. |
| * |
| * @param c the collection of objects to destroy. |
| * @since 0.9 |
| */ |
| public static void destroy(Collection c) { |
| if (c == null || c.isEmpty()) { |
| return; |
| } |
| |
| for (Object o : c) { |
| destroy(o); |
| } |
| } |
| } |