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From "Leonardo Uribe (Updated) (JIRA)" <...@myfaces.apache.org>
Subject [jira] [Updated] (MYFACES-2552) TagValueExpression.getType() returns null if the property in the managed bean is null and the expression points to a facelets composite component attribute
Date Fri, 11 Nov 2011 02:46:51 GMT

     [ https://issues.apache.org/jira/browse/MYFACES-2552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Leonardo Uribe updated MYFACES-2552:
------------------------------------

       Resolution: Fixed
    Fix Version/s: 2.1.4
                   2.0.10
           Status: Resolved  (was: Patch Available)
    
> TagValueExpression.getType() returns null if the property in the managed bean is null
and the expression points to a facelets composite component attribute
> -----------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MYFACES-2552
>                 URL: https://issues.apache.org/jira/browse/MYFACES-2552
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: JSR-314
>    Affects Versions: 2.1.0
>            Reporter: Jakob Korherr
>            Assignee: Leonardo Uribe
>             Fix For: 2.0.10, 2.1.4
>
>         Attachments: MYFACES-2552-4.patch, MYFACES-2552-spec-proposal.patch, spec745mf.patch.txt
>
>
> if you have a facelets composite component with an attribute "test" that points to a
property in a managed bean (e.g. #{myBean.property}) which is currently null and you refer
to that attribute in the implementation via #{cc.attrs.test} you can get the current value
(null) or set a new value but you cannot get the type of the property (e.g. String[]). However
if the property in the managed bean is non-null you can get the type.
> For example:
> <cc:interface name="mycomponent">
>     <cc:attribute name="test" required="true"/>
> </cc:interface>
> <cc:implementation>
>     <h:selectManyListbox value="#{cc.attrs.test}">
>         <f:selectItems value="#{some select items}"/>
>     </h:selectManyListbox>
> </cc:implementation>
> --> calling #{cc.attrs.test}.getType() will fail if #{cc.attrs.test} resolves to null,
but will work if #{cc.attrs.test} resolves to some valid value.
> This currently results in a NullPointerException in _SharedRendererUtils.getConvertedUISelectManyValue().

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