1 /**
2 * This file Copyright (c) 2010 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.module.blossom.support;
35
36 import java.util.List;
37
38 import org.apache.commons.logging.Log;
39 import org.apache.commons.logging.LogFactory;
40 import org.springframework.beans.factory.DisposableBean;
41 import org.springframework.beans.factory.config.BeanPostProcessor;
42 import org.springframework.beans.factory.config.DestructionAwareBeanPostProcessor;
43 import org.springframework.beans.factory.support.AbstractBeanFactory;
44
45 /**
46 * Utility methods for BeanFactory.
47 *
48 * @since 1.2
49 */
50 public class BeanFactoryUtils {
51
52 private static final Log logger = LogFactory.getLog(BeanFactoryUtils.class);
53
54 /**
55 * Destroys a bean by applying destruction aware post processors and invoking destroy methods.
56 */
57 public static void destroyBean(Object bean, String beanName, AbstractBeanFactory beanFactory) {
58 applyBeanPostProcessorsBeforeDestruction(bean, beanName, beanFactory);
59 disposeBean(bean, beanName);
60 }
61
62 /**
63 * Invokes destroy method on the bean if it implements DisposableBean.
64 */
65 public static void disposeBean(Object bean, String beanName) {
66 if (bean instanceof DisposableBean) {
67 try {
68 ((DisposableBean) bean).destroy();
69 } catch (Throwable ex) {
70 String msg = "Invocation of destroy method failed on bean with name '" + beanName + "'";
71 if (logger.isDebugEnabled()) {
72 logger.warn(msg, ex);
73 } else {
74 logger.warn(msg + ": " + ex);
75 }
76 }
77 }
78 }
79
80 /**
81 * Applies destruction aware post processors on the supplied bean.
82 */
83 public static void applyBeanPostProcessorsBeforeDestruction(Object bean, String beanName, AbstractBeanFactory beanFactory) {
84 List<BeanPostProcessor> beanPostProcessors = beanFactory.getBeanPostProcessors();
85 if (beanPostProcessors != null && !beanPostProcessors.isEmpty()) {
86 for (int i = beanPostProcessors.size() - 1; i >= 0; i--) {
87 Object postProcessor = beanPostProcessors.get(i);
88 if (postProcessor instanceof DestructionAwareBeanPostProcessor)
89 ((DestructionAwareBeanPostProcessor) postProcessor).postProcessBeforeDestruction(bean, beanName);
90 }
91 }
92 }
93 }