Weblogic Classloader problems during development (FactoryFinder)
----------------------------------------------------------------
Key: MYFACES-1148
URL: http://issues.apache.org/jira/browse/MYFACES-1148
Project: MyFaces
Type: Bug
Components: Implementation
Versions: 1.1.1
Environment: Weblogic 9.0, 8.1, etc. Windows XP Pro sp2.
Reporter: Adam Brod
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> <[EMAIL PROTECTED] -
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)
>
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
http://www.atlassian.com/software/jira
