[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

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0
• Fix Version/s: 2.0.10, 2.1.4
• Component/s: JSR-314
• Assignee: Leonardo Uribe
• Reporter: Jakob Korherr
• Created: 12/Feb/10 14:33
• Updated: 16/Nov/11 01:22
• Resolved: 11/Nov/11 02:46

Description

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().

Issue Links

• is duplicated by: MYFACES-3311 Can't resolve converter for cc attributes
• is duplicated by: MYFACES-3316 Problem concerning MyFaces-1890: does not work when dealing with a composite component