1 Reply Latest reply on Apr 16, 2010 10:44 PM by purecharger

    JSF Composite Component

    purecharger
    purecharger Apr 16, 2010 12:04 AM

      I'm trying to create a composite component for use in my Seam application, and I'm running into problems with the simplest hello, world component.


      I have placed a file named hello.xhtml in {jboss deploy}/application.ear/application.war/resources/greet


      <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:composite="http://java.sun.com/jsf/composite">
<head>
<title>My First Composite Component</title>
</head>
<body>

<composite:interface>
    <composite:attribute name="who"/>
</composite:interface>

<composite:implementation>
    <h:outputText value="Hello, #{cc.attrs.who}!"/>
</composite:implementation>

</body>
</html>



      Now in home.xhtml, located at the root of my webapp ({jboss deploy}/application.ear/application.war/home.xhtml):


      <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
                xmlns:ui="http://java.sun.com/jsf/facelets"
                xmlns:h="http://java.sun.com/jsf/html"
                xmlns:f="http://java.sun.com/jsf/core"
                xmlns:g="http://java.sun.com/jsf/composite/greet"
                xmlns:s="http://jboss.com/products/seam/taglib"
                template="layout/template.xhtml">
    <ui:define name="content">
    <div id="content">
        <g:hello who="World"/>
        <br/>
    </div>
    </ui:define>
</ui:composition>



      But my hello, world is not displayed. Any ideas?

        • 1. Re: JSF Composite Component
          purecharger
          purecharger Apr 16, 2010 10:44 PM (in response to purecharger)

          I think I know why this does not work: Seam doesn't play well with JSF 2.0, even though, according to Dan Allen, Seam 2 and JSF 2.0 absolutely work together (http://seamframework.org/Documentation/DoesSeamWorkWithJSF2).


          faces-config.xml in seam-gen created projects and the seam examples all specify 1.2 as the version and use FacesViewHandler, a 1.2 class. Attempting to deploy an application with JSF 2.0 jars and specifying 2.0 in faces-config.xml causes this exception:


          2010-04-16 11:24:18,249 INFO  [javax.enterprise.resource.webcontainer.jsf.config] (Thread-2) Unsanitized stacktrace from failed start...
javax.faces.view.facelets.FaceletException: Must have a Constructor that takes in a ComponentConfig
     at com.sun.faces.facelets.tag.AbstractTagLibrary$UserComponentHandlerFactory.<init>(AbstractTagLibrary.java:289)
     at com.sun.faces.facelets.tag.AbstractTagLibrary.addComponent(AbstractTagLibrary.java:519)
...
Caused by: java.lang.NoSuchMethodException: org.jboss.seam.ui.handler.CommandButtonParameterComponentHandler.<init>(javax.faces.view.facelets.ComponentConfig)
     at java.lang.Class.getConstructor0(Class.java:2706)



          I've filed a defect on JBoss JIRA:


          https://jira.jboss.org/jira/browse/JBSEAM-4637

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