[jbossseam-issues] [JBoss JIRA] Created: (JBSEAM-1209) Parameter values in *.page.xml can only be EL expressions

[Alan Fehr (JIRA)]

Parameter values in *.page.xml can only be EL expressions
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                 Key: JBSEAM-1209
                 URL: http://jira.jboss.com/jira/browse/JBSEAM-1209
             Project: JBoss Seam
          Issue Type: Bug
    Affects Versions: 1.2.1.GA
            Reporter: Alan Fehr


In myPage.page.xml, if I specify a parameter in a redirect, I get an error if the parameter value is just a String:

<param name="editMode" value="true" />
leads to the following exception:

javax.servlet.ServletException: Invalid expression: 'true'. Parsed Expression of unexpected type java.lang.String
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
	org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
	org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause

javax.faces.el.ReferenceSyntaxException: Invalid expression: 'true'. Parsed Expression of unexpected type java.lang.String
	org.apache.myfaces.el.ELParserHelper.parseExpression(ELParserHelper.java:84)
	org.apache.myfaces.el.ValueBindingImpl$2.newInstance(ValueBindingImpl.java:82)
	org.apache.myfaces.shared_impl.util.BiLevelCacheMap.get(BiLevelCacheMap.java:123)
	org.apache.myfaces.el.ValueBindingImpl.<init>(ValueBindingImpl.java:115)
	org.apache.myfaces.application.ApplicationImpl$1.newInstance(ApplicationImpl.java:64)
	org.apache.myfaces.shared_impl.util.BiLevelCacheMap.get(BiLevelCacheMap.java:123)
	org.apache.myfaces.application.ApplicationImpl.createValueBinding(ApplicationImpl.java:617)
	org.jboss.seam.jsf.SeamApplication11.createValueBinding(SeamApplication11.java:143)
	org.jboss.seam.core.Expressions$1.getFacesValueBinding(Expressions.java:119)
	org.jboss.seam.core.Expressions$1.getValue(Expressions.java:69)
	org.jboss.seam.pages.Param.getValueFromModel(Param.java:93)
	org.jboss.seam.pages.RedirectNavigationHandler.navigate(RedirectNavigationHandler.java:36)
	org.jboss.seam.pages.Rule.execute(Rule.java:91)
	org.jboss.seam.pages.Navigation.navigate(Navigation.java:65)
	org.jboss.seam.core.Pages.navigate(Pages.java:131)
	org.jboss.seam.jsf.SeamNavigationHandler.handleNavigation(SeamNavigationHandler.java:32)
	org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:84)
	javax.faces.component.UICommand.broadcast(UICommand.java:106)
	javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
	javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
	org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
	org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
	org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
	org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

If I use <param name="editMode" value="#{true}" />, it works.

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