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IoC container vs servlet container lifecycle separation.

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This commit is contained in:
Ben Alex 2005-02-20 05:38:57 +00:00
parent 44f1c83dab
commit 57842d4ba8
1 changed files with 29 additions and 3 deletions
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32
core/src/main/java/org/acegisecurity/util/FilterToBeanProxy.java
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@ -1,4 +1,4 @@
/* Copyright 2004 Acegi Technology Pty Limited /* Copyright 2004, 2005 Acegi Technology Pty Limited
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -79,6 +79,23 @@ import javax.servlet.ServletResponse;
* <code>ContextLoaderServlet</code>. Where possible you should not use this * <code>ContextLoaderServlet</code>. Where possible you should not use this
* initialization parameter, instead using <code>ContextLoaderListener</code>. * initialization parameter, instead using <code>ContextLoaderListener</code>.
* </p> * </p>
*
* <p>
* A final optional initialization parameter, <code>lifecycle</code>,
* determines whether the servlet container or the IoC container manages the
* lifecycle of the proxied filter. When possible you should write your
* filters to be managed via the IoC container interfaces such as {@link
* org.springframework.beans.factory.InitializingBean} and {@link
* org.springframework.beans.factory.DisposableBean}. If you cannot control
* the filters you wish to proxy (eg you do not have their source code) you
* might need to allow the servlet container to manage lifecycle via the
* {@link javax.servlet.Filter#init(javax.servlet.FilterConfig)} and {@link
* javax.servlet.Filter#destroy()} methods. If this case, set the
* <code>lifecycle</code> initialization parameter to
* <code>servlet-container-managed</code>. If the parameter is any other
* value, servlet container lifecycle methods will not be delegated through to
* the proxy.
* </p>
* *
* @author Ben Alex * @author Ben Alex
* @version $Id$ * @version $Id$
@ -89,11 +106,12 @@ public class FilterToBeanProxy implements Filter {
private Filter delegate; private Filter delegate;
private FilterConfig filterConfig; private FilterConfig filterConfig;
private boolean initialized = false; private boolean initialized = false;
private boolean servletContainerManaged = false;
//~ Methods ================================================================ //~ Methods ================================================================
public void destroy() { public void destroy() {
if (delegate != null) { if ((delegate != null) && servletContainerManaged) {
delegate.destroy(); delegate.destroy();
} }
} }
@ -141,6 +159,12 @@ public class FilterToBeanProxy implements Filter {
targetBean = null; targetBean = null;
} }
String lifecycle = filterConfig.getInitParameter("lifecycle");
if ("servlet-container-managed".equals(lifecycle)) {
servletContainerManaged = true;
}
ApplicationContext ctx = this.getContext(filterConfig); ApplicationContext ctx = this.getContext(filterConfig);
String beanName = null; String beanName = null;
@ -190,6 +214,8 @@ public class FilterToBeanProxy implements Filter {
delegate = (Filter) object; delegate = (Filter) object;
delegate.init(filterConfig); if (servletContainerManaged) {
delegate.init(filterConfig);
}
} }
} }