Tõnis Pool created TOMEE-1913:
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Summary: CDI.current().getBeanManager() returns BeanManager of
another webapp
Key: TOMEE-1913
URL: https://issues.apache.org/jira/browse/TOMEE-1913
Project: TomEE
Issue Type: Bug
Components: TomEE Core Server
Reporter: Tõnis Pool
Took some time to figure this one out, but the javax.enterprise.inject.spi.CDI
integration point will return a bean manager of another webapp, when the
current webapp doesn't have CDI enabled.
This in turn will mess with JSF as it uses that integration point to detect
whether CDI is enabled or not. The end result is that TomEE hasn't started CDI
for the webapp, but JSF thinks it's available.
To reproduce:
1) Download apps.zip from here, it contains 2 webapps as maven projects
2) Package and deploy the "deploy-first" webapp to TomEE 7.0.1
3) Package and deploy the "BeanManager_bug" webapp to TomEE 7.0.1
4) Access $SERVER_URL/BeanManager_bug/, notice the NullPointerException
5) Access $SERVER_URL/BeanManager_bug/test, notice the "helloworld" bean among
the CDI beans, it's from the "deploy-first" webapp.
I believe the problem is that MyFaces
{{AbstractFacesInitializer#initCDIIntegration}} calls the mentioned
CDI.current().getBeanManager(), which should fail, but actually will return
"deploy-first" bean manager because of the fallback algorithm in
{{ThreadSingletonServiceImpl#get(final ClassLoader cl)}}, which returns the
WebBeansContext with the most beans in it.
So for the "BeanManager_bug" webapp JSF thinks it has CDI, but actually
doesn't, which means it will use the CDIManagedBeanHandlerImpl instead of the
DefaultViewScopeHandler.
Just for reference, here's the NPE from accessing $SERVER_URL/BeanManager_bug/:
{noformat}
java.lang.NullPointerException
org.apache.webbeans.web.context.WebContextsService.lazyStartSessionContext(WebContextsService.java:815)
org.apache.webbeans.web.context.WebContextsService.getSessionContext(WebContextsService.java:739)
org.apache.webbeans.web.context.WebContextsService.getCurrentContext(WebContextsService.java:277)
org.apache.webbeans.container.BeanManagerImpl.getContext(BeanManagerImpl.java:287)
org.apache.webbeans.intercept.NormalScopedBeanInterceptorHandler.getContextualInstance(NormalScopedBeanInterceptorHandler.java:88)
org.apache.webbeans.intercept.SessionScopedBeanInterceptorHandler.getContextualInstance(SessionScopedBeanInterceptorHandler.java:76)
org.apache.webbeans.intercept.NormalScopedBeanInterceptorHandler.get(NormalScopedBeanInterceptorHandler.java:70)
org.apache.myfaces.cdi.view.ViewScopeBeanHolder$$OwbNormalScopeProxy0.generateUniqueViewScopeId(org/apache/myfaces/cdi/view/ViewScopeBeanHolder.java)
org.apache.myfaces.cdi.impl.CDIManagedBeanHandlerImpl.generateViewScopeId(CDIManagedBeanHandlerImpl.java:92)
org.apache.myfaces.view.ViewScopeProxyMap.getWrapped(ViewScopeProxyMap.java:79)
org.apache.myfaces.view.ViewScopeProxyMap.get(ViewScopeProxyMap.java:119)
org.apache.myfaces.config.ManagedBeanBuilder.getScope(ManagedBeanBuilder.java:564)
org.apache.myfaces.config.ManagedBeanBuilder.getNarrowestScope(ManagedBeanBuilder.java:464)
org.apache.myfaces.config.ManagedBeanBuilder.isInValidScope(ManagedBeanBuilder.java:435)
org.apache.myfaces.config.ManagedBeanBuilder.initializeProperties(ManagedBeanBuilder.java:319)
org.apache.myfaces.config.ManagedBeanBuilder.buildManagedBean(ManagedBeanBuilder.java:163)
org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.createManagedBean(ManagedBeanResolver.java:333)
org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.getValue(ManagedBeanResolver.java:296)
javax.el.CompositeELResolver.getValue(CompositeELResolver.java:63)
org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:179)
org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:94)
org.apache.el.parser.AstValue.getValue(AstValue.java:137)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
org.apache.webbeans.el22.WrappedValueExpression.getValue(WrappedValueExpression.java:70)
org.apache.myfaces.view.facelets.el.ContextAwareTagValueExpression.getValue(ContextAwareTagValueExpression.java:96)
javax.faces.component._DeltaStateHelper.eval(_DeltaStateHelper.java:360)
javax.faces.component.UIOutput.getValue(UIOutput.java:67)
org.apache.myfaces.shared.renderkit.RendererUtils.getValue(RendererUtils.java:486)
org.apache.myfaces.shared.renderkit.RendererUtils.getStringValue(RendererUtils.java:329)
org.apache.myfaces.shared.renderkit.html.HtmlTextRendererBase.renderOutput(HtmlTextRendererBase.java:86)
org.apache.myfaces.shared.renderkit.html.HtmlTextRendererBase.encodeEnd(HtmlTextRendererBase.java:73)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:674)
javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:554)
javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:550)
org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1891)
org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:313)
javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:58)
org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:116)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:267)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:200)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.apache.openejb.server.httpd.EEFilter.doFilter(EEFilter.java:65)
{noformat}
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