/* | |
* Copyright 2005-2008 Jeremy Haile | |
* | |
* Licensed 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.jsecurity.spring; | |
import org.apache.commons.logging.Log; | |
import org.apache.commons.logging.LogFactory; | |
import org.jsecurity.util.Destroyable; | |
import org.jsecurity.util.Initializable; | |
import org.springframework.beans.BeansException; | |
import org.springframework.beans.FatalBeanException; | |
import org.springframework.beans.factory.config.DestructionAwareBeanPostProcessor; | |
/** | |
* <p>Bean post processor for Spring that automatically calls the <tt>init()</tt> and/or | |
* <tt>destroy()</tt> methods on JSecurity objects that implement the {@link org.jsecurity.util.Initializable} | |
* or {@link org.jsecurity.util.Destroyable} interfaces, respectfully. This post processor makes it easier | |
* to configure JSecurity beans in Spring, since the user never has to worry about whether or not if they | |
* have to specify init-method and destroy-method bean attributes.</p> | |
* | |
* <p><b>Warning: This post processor has no way to determine if <tt>init()</tt> or <tt>destroy()</tt> have | |
* already been called, so if you define this post processor in your applicationContext, do not also call these | |
* methods manually or via Spring's <tt>init-method</tt> or <tt>destroy-method</tt> bean attributes.</b></p> | |
* | |
* @since 0.2 | |
* @author Jeremy Haile | |
*/ | |
public class LifecycleBeanPostProcessor implements DestructionAwareBeanPostProcessor { | |
/** | |
* Commons-logging logger | |
*/ | |
protected final transient Log logger = LogFactory.getLog(getClass()); | |
/** | |
* Calls the <tt>init()</tt> methods on the bean if it implements {@link org.jsecurity.util.Initializable} | |
* @param object the object being initialized. | |
* @param name the name of the bean being initialized. | |
* @return the initialized bean. | |
* @throws BeansException if any exception is thrown during initialization. | |
*/ | |
public Object postProcessBeforeInitialization(Object object, String name) throws BeansException { | |
if( object instanceof Initializable) { | |
try { | |
if (logger.isDebugEnabled()) { | |
logger.debug("Initializing bean [" + name + "]..."); | |
} | |
((Initializable)object).init(); | |
} catch (Exception e) { | |
throw new FatalBeanException( "Error initializing bean [" + name + "]", e); | |
} | |
} | |
return object; | |
} | |
public Object postProcessAfterInitialization(Object object, String name) throws BeansException { | |
// Does nothing after initialization | |
return object; | |
} | |
/** | |
* Calls the <tt>destroy()</tt> methods on the bean if it implements {@link org.jsecurity.util.Destroyable} | |
* @param object the object being initialized. | |
* @param name the name of the bean being initialized. | |
* @throws BeansException if any exception is thrown during initialization. | |
*/ | |
public void postProcessBeforeDestruction(Object object, String name) throws BeansException { | |
if( object instanceof Destroyable) { | |
try { | |
if (logger.isDebugEnabled()) { | |
logger.debug("Destroying bean [" + name + "]..."); | |
} | |
((Destroyable)object).destroy(); | |
} catch (Exception e) { | |
throw new FatalBeanException( "Error destroying bean [" + name + "]", e); | |
} | |
} | |
} | |
} |