[MYFACES-1148] Weblogic Classloader problems during development (FactoryFinder)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.1
• Component/s: General
• Environment: Weblogic 9.0, 8.1, etc. Windows XP Pro sp2.
• Assignee: Leonardo Uribe
• Reporter: Adam Brod
• Created: 21/Feb/06 08:03
• Updated: 21/Feb/11 18:59
• Resolved: 21/Feb/11 18:59

Description

Like most weblogic users, our team develops using the exploded war format. That means that each time we deploy a new version of a class, weblogic automatically picks it up. The way Weblogic implements this is that when it detects a new class, it drops the classloader for that class, as well as the Servlet and all helper classes that are loaded by the Servlet. That means FacesServlet is dropped and reloaded.

The problem is that FactoryFinder stores the Factory classes in a Map where the key is the current classloader. That works fine until I deploy a new class to my webapp. At that point, weblogic drops the classloader and creates a new one with the new class definition. Now when FacesServlet.init() calls FactoryFinder.getFactory() (in the new classloader), an IllegalStateException is generated (see below) because the current classloader is not a valid key for the _registeredFactoryNames Map.

One possible solution that I can see to this is to change the key for the Factory map to use the ServletContext's getServletContextName() as the key.

I am 95% sure this same problem exists in Weblogic 7.0, 8.1 and 9.1 since they all use almost the same Servlet redeployment mechanism. I have only tried this on Weblogic 9.0.

<Feb 20, 2006 5:38:07 PM EST> <Error> <HTTP> <BEA-101017> <[weblogic.servlet.internal.WebAppServletContext@164c35f - name: 'ma-web-1.0-SNAPSHOT
', context-path: '/ma'] Root cause of ServletException.
java.lang.IllegalStateException: No Factories configured for this Application - typically this is because a context listener is not setup in yo
ur web.xml.
A typical config looks like this;
<listener>
<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
</listener>

at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:84)
at javax.faces.webapp.FacesServlet.init(FacesServlet.java:84)
at weblogic.servlet.internal.StubSecurityHelper$ServletInitAction.run(StubSecurityHelper.java:265)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.StubSecurityHelper.createServlet(StubSecurityHelper.java:61)
at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(StubLifecycleHelper.java:58)
at weblogic.servlet.internal.StubLifecycleHelper.<init>(StubLifecycleHelper.java:48)
at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:502)
at weblogic.servlet.internal.ServletStubImpl.checkForReload(ServletStubImpl.java:429)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:221)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:367)
at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:336)
at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:196)
at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:87)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3020)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1925)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1848)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1288)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
>

Issue Links

• is related to: MYFACES-2995 Make method of determinine app context in FactoryFinder pluggable