[jira] Commented: (MYFACES-2553) Handle MethodExpressions on correctly

["Leonardo Uribe (JIRA)" <de...@myfaces.apache.org>]

    [ https://issues.apache.org/jira/browse/MYFACES-2553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833178#action_12833178 ] 

Leonardo Uribe commented on MYFACES-2553:
-----------------------------------------

Testing mojarra example ajax-component/switchlistComponent.jsf

The use of the composite component is this:

              <ez:switchlist id="switchlist" selected1="#{switchlist.list1}" selected2="#{switchlist.list2}"
                      items1="#{switchlist.items1}" items2="#{switchlist.items2}"
                      move1to2="#{switchlist.move1to2}" move2to1="#{switchlist.move2to1}"/>

The composite component has something like this in its declaration:

<cc:attribute name="move1to2" targets="move1to2" required="true" method-signature="void f1(javax.faces.event.ActionEvent)" />

inside <cc:implementation> it has something like this:

<h:commandButton id="move1to2" value="&gt;&gt;" actionListener="#{cc.attrs.move1to2}" styleClass="switchlistButton"/>

When the page is rendered, the following message is shown below:

com.sun.faces.application.view.FaceletViewHandlingStrategy retargetMethodExpressions
WARNING: JSF1092: Composite Component: switchlist.xhtml, library: switchlist : Unnecessary specification of the 'targets' attribute for composite attribute 'move2to1'.  The 'targets' attribute is only necessary when the composite attribute is named 'action', 'actionListener', 'validator', or 'valueChangeListener'.

Checking myfaces, the attribute is retarget to h:commandButton, but on attribute "move1to2". 

To make this work, the attribute must not be retarget, but it is not very clear what should happen instead. It seems according to the warning there is some missing undocumented detail on ViewDeclarationLanguage.retargetMethodExpressions that do "something".

Suggestions are welcome.

> Handle MethodExpressions on <composite:attribute> correctly
> -----------------------------------------------------------
>
>                 Key: MYFACES-2553
>                 URL: https://issues.apache.org/jira/browse/MYFACES-2553
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: JSR-314
>    Affects Versions: 2.0.0-beta-2
>            Reporter: Jakob Korherr
>            Assignee: Jakob Korherr
>
> There are currently problems when <composite:attribute> refers to a MethodExpression.

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