3:35 p.m.
[ http://jira.jboss.com/jira/browse/JBSEAM-1566?page=all ]
Markus Wolf updated JBSEAM-1566:
--------------------------------
Actually it is more complex than I first thought.
I'm using facelets and have a source-tag defined which gets my home-bean as attribute
value expression. Inside the facelets template I'll call a method on that value
expression which results in the above exception.
A simple example to be more precise:
My displayed page.xhtml contains this:
<k:listTable query="#{accounts}" home="#{accountHome}">
</k:listTable>
The facelet for k:listTable is as follows:
<ui:composition>
<h:dataTable rendered="#{!empty query.resultList}"
value="#{query.resultList}"
var="entity">
<h:column rendered="#{home != null}">
<h:commandLink action="#{home.remove(entity.id)}">
<img src="..." />
</h:commandLink>
</h:column>
</h:dataTable>
</ui:composition>
The above does work well when accessing bean attributes like the resultList of my query
bean. But for method calls it does fail.
Exception during execution of extended el
-----------------------------------------
Key: JBSEAM-1566
URL: http://jira.jboss.com/jira/browse/JBSEAM-1566
Project: JBoss Seam
Issue Type: Bug
Components: EL
Affects Versions: 1.2.1.GA
Reporter: Markus Wolf
I have an EntityHome class which acts as my base class for all EntityHome derivates.
Therein I defined a remove(Object id) method which causes an exception.
WARNUNG: #{home.remove(entity.id)}: java.lang.NullPointerException
javax.faces.FacesException: #{home.remove(entity.id)}: java.lang.NullPointerException
at
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:99)
at javax.faces.component.UICommand.broadcast(UICommand.java:383)
at javax.faces.component.UIData.broadcast(UIData.java:854)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:158)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.processApplication(AjaxViewRoot.java:346)
at
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:619)
Caused by: javax.faces.el.MethodNotFoundException: java.lang.NullPointerException
at
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:99)
at
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
... 39 more
Caused by: java.lang.NullPointerException
at
org.jboss.seam.ui.facelet.MethodExpressionHelper.findParamTypes(MethodExpressionHelper.java:146)
at
org.jboss.seam.ui.facelet.MethodExpressionHelper.invokeTheExpression(MethodExpressionHelper.java:98)
at org.jboss.seam.ui.facelet.ParamMethodExpression.invoke(ParamMethodExpression.java:62)
at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
at
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
... 40 more
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