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From "Bill Lucy (JIRA)" <...@myfaces.apache.org>
Subject [jira] [Created] (MYFACES-4010) MyFaces 2.2 throws UnsupportedOperationException with an eager ManagedBean with ManagedProperty
Date Wed, 19 Aug 2015 18:47:45 GMT
Bill Lucy created MYFACES-4010:
----------------------------------

             Summary: MyFaces 2.2 throws UnsupportedOperationException with an eager ManagedBean
with ManagedProperty
                 Key: MYFACES-4010
                 URL: https://issues.apache.org/jira/browse/MYFACES-4010
             Project: MyFaces Core
          Issue Type: Bug
    Affects Versions: 2.2.8
         Environment: Tomcat, WebShere
            Reporter: Bill Lucy


This seems to be a regression from another issue, https://issues.apache.org/jira/browse/MYFACES-3116,
which was resolved in 2.0 and 2.1.

Given a bean similar to the following:

@ManagedBean(eager=true, name="eagerBean")
@ApplicationScoped
public class EagerBean implements Serializable {
	private static final long serialVersionUID = 1L;
	
	@ManagedProperty(value="#{message}")
	private MessageBean messageBean;

    @PostConstruct
    public void postConstruct() {
             ...
    }
...
}

The following exception is thrown with MyFaces 2.2.8 on Tomcat 8:
19-Aug-2015 12:48:32.443 SEVERE [localhost-startStop-1] org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces
An error occured while initializing MyFaces: This method is not supported during startup
 java.lang.UnsupportedOperationException: This method is not supported during startup
        at org.apache.myfaces.context.servlet.StartupServletExternalContextImpl.getSession(StartupServletExternalContextImpl.java:187)
        at org.apache.myfaces.view.impl.DefaultViewScopeHandler.generateViewScopeId(DefaultViewScopeHandler.java:128)
        at org.apache.myfaces.view.ViewScopeProxyMap.getWrapped(ViewScopeProxyMap.java:76)
        at org.apache.myfaces.view.ViewScopeProxyMap.get(ViewScopeProxyMap.java:109)
        at org.apache.myfaces.config.ManagedBeanBuilder.getScope(ManagedBeanBuilder.java:560)
        at org.apache.myfaces.config.ManagedBeanBuilder.getNarrowestScope(ManagedBeanBuilder.java:464)
        at org.apache.myfaces.config.ManagedBeanBuilder.isInValidScope(ManagedBeanBuilder.java:435)
        at org.apache.myfaces.config.ManagedBeanBuilder.initializeProperties(ManagedBeanBuilder.java:319)
        at org.apache.myfaces.config.ManagedBeanBuilder.buildManagedBean(ManagedBeanBuilder.java:163)
        at org.apache.myfaces.webapp.AbstractFacesInitializer._createEagerBeans(AbstractFacesInitializer.java:303)
        at org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces(AbstractFacesInitializer.java:193)
        at org.apache.myfaces.webapp.StartupServletContextListener.contextInitialized(StartupServletContextListener.java:119)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4727)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5167)

Note, the app does not throw this Exception in MyFaces 2.0.  The regression in 2.2 is caused
by a spec update to UIViewRoot.getViewMap(boolean): that map is now backed by the session,
which is not available during startup (which was addressed by MYFACES-3116): https://javaserverfaces.java.net/docs/2.2/javadocs/javax/faces/component/UIViewRoot.html#getViewMap%28boolean%29

One solution is to make sure we don't call getViewMap(true) during startup; I'll attach a
patch demonstrating that route.



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