Bill Lucy created MYFACES-4010:
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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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