[
http://issues.apache.org/jira/browse/TOMAHAWK-414?page=comments#action_12377910
]
Mike Kienenberger commented on TOMAHAWK-414:
--------------------------------------------
Stacktrace from my copy of MyFaces.
java.lang.NullPointerException: expr
at
javax.faces.component.UIComponentBase.findComponent(UIComponentBase.java:387)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(HtmlMessageRenderer.java:225)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(HtmlMessageRenderer.java:239)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(HtmlMessageRenderer.java:239)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(HtmlMessageRenderer.java:239)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(HtmlMessageRenderer.java:239)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(HtmlMessageRenderer.java:239)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.getOutputLabelMap(HtmlMessageRenderer.java:209)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.findInputLabel(HtmlMessageRenderer.java:153)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessagesRenderer.getSummary(HtmlMessagesRenderer.java:72)
at
org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlMessageRendererBase.renderSingleFacesMessage(HtmlMessageRendererBase.java:120)
at
org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlMessagesRendererBase.renderList(HtmlMessagesRendererBase.java:96)
at
org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlMessagesRendererBase.renderMessages(HtmlMessagesRendererBase.java:77)
at
org.apache.myfaces.renderkit.html.ext.HtmlMessagesRenderer.encodeEnd(HtmlMessagesRenderer.java:44)
at
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
> The 'for' attribute on <h:outputLabel> should be required to avoid a
> NullPointerException
> -----------------------------------------------------------------------------------------
>
> Key: TOMAHAWK-414
> URL: http://issues.apache.org/jira/browse/TOMAHAWK-414
> Project: MyFaces Tomahawk
> Type: Bug
> Components: Message(s)
> Versions: 1.1.2-SNAPSHOT
> Environment: Doesn't matter.
> Reporter: Val Blant
> Priority: Minor
>
> If you use the <t:messages> tag in conjunction with <h:outputLabel> without
> specifying the 'for' attribute, the page will not render and an exception
> will be thrown:
> java.lang.NullPointerException: expr
> at
> javax.faces.component.UIComponentBase.findComponent(UIComponentBase.java:210)
> at
> org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(HtmlMessageRenderer.java:200)
> This could be easily avoided by declaring the 'for' attribute as required in
> the TLD.
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