Home/ Questions/Q 8515353
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-11T05:07:27+00:00

/test.xhtml <?xml version=1.0 encoding=UTF-8?> <!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

  • 0

/test.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!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:f="http://java.sun.com/jsf/core"
      xmlns:composite="http://java.sun.com/jsf/composite/components">
    <f:view>

        <h:head>
            <title>Default Title</title>
        </h:head>

        <h:body>
            <h:form id="form">
                <composite:test id="composite"/>
            </h:form>
        </h:body>

    </f:view>

</html>

/resources/components/test.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:cc="http://java.sun.com/jsf/composite"
      xmlns:composite="http://java.sun.com/jsf/composite/components"
      xmlns:p="http://primefaces.org/ui">

    <head>
        <title>(For validation only)</title>
    </head>

    <body>
    <cc:interface>
    </cc:interface>

    <cc:implementation>

        <p:panel header="header foo bar">

            <p:panel>
                <f:facet name="header">
                    <h:outputText value="foo"/>

                    <h:outputText value="bar"/>
                </f:facet>
            </p:panel>

        </p:panel>

    </cc:implementation>

</body>

</html>

This combination gives:

GRAVE: Error Rendering View[/test.xhtml]
java.lang.IllegalStateException: Component ID form:composite:j_id2 has already been found in the view.

with this tree:

GRAVE: JSF1007: Duplicate component ID form:composite:j_id2 found in view.
GRAVE: +id: j_id1
 type: javax.faces.component.UIViewRoot@47080ae5
  +id: javax_faces_location_HEAD
   type: com.sun.faces.component.ComponentResourceContainer@2daf59b3
    +id: j_id3
     type: javax.faces.component.UIOutput@532a0e33
    +id: j_id4
     type: javax.faces.component.UIOutput@6e0a60ec
    +id: j_id5
     type: javax.faces.component.UIOutput@6b615e64
    +id: j_id6
     type: javax.faces.component.UIOutput@457c2e4f
    +id: j_id7
     type: javax.faces.component.UIOutput@5bc4682c
    +id: j_id8
     type: javax.faces.component.UIOutput@3b934fc5
  +id: j_idt37
   type: <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  +id: j_idt38
   type: <html xmlns="http://www.w3.org/1999/xhtml">

  +id: j_idt39
   type: javax.faces.component.UIOutput@610364d1
    +id: j_idt40
     type: 
            <title>Default Title</title>

  +id: j_idt55
   type: javax.faces.component.UIOutput@25d00719
    +id: form
     type: javax.faces.component.html.HtmlForm@7c820db3
      +id: composite
       type: javax.faces.component.UINamingContainer@3e51a2a1
        +id: j_id2
         type: javax.faces.component.UIPanel@445a2d11
          +id: j_idt52
           type: org.primefaces.component.panel.Panel@618c17fd
            +id: j_idt53
             type: org.primefaces.component.panel.Panel@347b1513
              +id: j_id2
               type: javax.faces.component.UIPanel@7c44da25
                +id: j_idt50
                 type: javax.faces.component.html.HtmlOutputText@7ca4ad4f
                +id: j_idt54
                 type: javax.faces.component.html.HtmlOutputText@1f6e5d77
  +id: j_idt47
   type: 
</html>

However, if I change composite component this way:

/resources/components/test.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:cc="http://java.sun.com/jsf/composite"
      xmlns:composite="http://java.sun.com/jsf/composite/components"
      xmlns:p="http://primefaces.org/ui">

    <head>
        <title>(For validation only)</title>
    </head>

    <body>
    <cc:interface>
    </cc:interface>

    <cc:implementation>

        <p:panel header="header foo bar">

            <p:panel>
                <f:facet name="header">
                    <h:panelGroup>
                        <h:outputText value="foo"/>

                        <h:outputText value="bar"/>
                    </h:panelGroup>
                </f:facet>
            </p:panel>

        </p:panel>

    </cc:implementation>

</body>

</html>

Adding a <h:panelGroup> in <f:facet> solves the problem.
Bad tree indexing or am I missing something? I’m using mojarra 2.1.3 and PrimeFaces 3.0.M4-SNAPSHOT under Glassfish 3.1.1.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    According to JSF2 documentations, The <f:facet> tag can have only one child. If you have many elements which you want to nest inside a facet tag, you should first wrap them in some other container like <h:panelGroup>, then put that single parent container in the <f:facet>.

    exactly what you have done!

    Here is the reference:

    JavaServer Faces 2.0, The Complete Reference – Authors: Ed Burns, Chris Schalk

    (ISBN-10: 0071625097 | ISBN-13: 978-0071625098)

    Page Number: 538

    Abstract:

    The f:facet tag signifies a nested component that has a special
    relationship to its enclosing tags. For example, stating that the
    “header” of a table is to be provided by a JSF component. This element
    adds the component represented by the JSF action in its body as a
    facet with the specified name to the component represented by the
    closest JSF component parent action element. This tag only allows one
    component to be nested whithin itself. To use multiple component as a
    facet, create them as children of a simple container component. For
    example, nest the corresponding HTML library component actions within
    the body a panelGroup component.

    • 0