estou querendo fazer uma condição através do render, entretanto quando uso o AND (&&) da erro, a página nem é exibida ocorrendo uma execption.
<p:commandButton value="Excluir" rendered="#{agendaAuditorio.reservaAuditorio!=null && agendaAuditorio.reservaAuditorio.idReservaAuditorio > 0}"
actionListener="#{agendaAuditorio.excluir}" update="growl" oncomplete="handleLoginRequest(xhr, status, args)"/>
no código acima se trocar o and (&&) pelo ou (||) a página é exibida! entretanto se colocar o and ocorre uma exception.
Alguem sabe o pq! ou como fazer o AND
27/09/2010 08:48:11 org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: Servlet.service() for servlet Faces Servlet threw exception
java.lang.IllegalArgumentException: null source
at java.util.EventObject.<init>(Unknown Source)
at javax.faces.event.SystemEvent.<init>(SystemEvent.java:67)
at javax.faces.event.ComponentSystemEvent.<init>(ComponentSystemEvent.java:69)
at javax.faces.event.PostRestoreStateEvent.<init>(PostRestoreStateEvent.java:69)
at com.sun.faces.lifecycle.RestoreViewPhase.deliverPostRestoreStateEvent(RestoreViewPhase.java:256)
at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:245)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97)
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:107)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:308)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at SessionJSF.doFilter(SessionJSF.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
