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From "Matt Benson (JIRA)" <...@myfaces.apache.org>
Subject [jira] [Resolved] (MYFACES-3283) #{cc.attr} attributes fail when a child component is accessed outside of the composite component (i.e. in action listeners or other events)
Date Thu, 18 Aug 2011 14:36:27 GMT

     [ https://issues.apache.org/jira/browse/MYFACES-3283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt Benson resolved MYFACES-3283.
----------------------------------

    Resolution: Not A Problem

Taking previous comment as assent.

> #{cc.attr} attributes fail when a child component is accessed outside of the composite
component (i.e. in action listeners or other events)
> -------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MYFACES-3283
>                 URL: https://issues.apache.org/jira/browse/MYFACES-3283
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: General
>    Affects Versions: 2.0.7
>         Environment: Mac OS 10.6, Tomcat 7
>            Reporter: Kito D. Mann
>         Attachments: myfaces_cc_issue.war
>
>
> If you reference a property of child component anywhere outside of the composite's context
(i.e. in an action method, a component system event listener, etc.), the property will not
be evaluated properly if the expression is a composite component attribute (i.e. "#{cc.attrs.property}").
This is because the EL evaluation code can't find the parent composite component.
> For example, consider the composite component:
> <?xml version="1.0"?>
> <html xmlns="http://www.w3.org/1999/xhtml"
> 	xmlns:h="http://java.sun.com/jsf/html"
> 	xmlns:composite="http://java.sun.com/jsf/composite">
> <composite:interface>
> 	<composite:attribute name="label" />
> 	<composite:attribute name="value" required="true" />
> </composite:interface>
> <composite:implementation>
> 	<h:outputLabel for="input" value="#{cc.attrs.label}" />
> 	<h:inputText id="input" value="#{cc.attrs.value}" />
> </composite:implementation>
> </html>
> The calling page:
> <!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:ui="http://java.sun.com/jsf/facelets"
> 	xmlns:h="http://java.sun.com/jsf/html"
> 	xmlns:f="http://java.sun.com/jsf/core"
> 	xmlns:ez="http://java.sun.com/jsf/composite/demo">
> <h:head></h:head>
> <h:body>
> 	<h:form id="form">
> 		<h:messages />
> 		<ez:input id="composite" label="Enter something:"
> 			value="#{testBean.value}" />
> 		<h:commandButton value="Submit" action="#{testBean.testCcAttribute}" />
> 	</h:form>
> </h:body>
> </html>
> Here's testBean.testCcAttribute():
> 	public String testCcAttribute() {
> 		HtmlInputText input = (HtmlInputText)FacesContext.getCurrentInstance().getViewRoot().findComponent("form:composite:input");
> 		UIComponent composite = FacesContext.getCurrentInstance().getViewRoot().findComponent("form:composite");
> 		String message = "Input control label attribute is: " + input.getLabel() + "; Composite
label attribute is: " + composite.getAttributes().get("label");
> 		display(message);
> 		return null;
> 	}
> This action method generates the following message:
> Input control label attribute is: null; Composite label attribute is: Enter something:
> ---
> Full example WAR attached.
> Note this is the same as the following issue with Mojarra: http://java.net/jira/browse/JAVASERVERFACES-2009.

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