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From gvanma...@comcast.net (Gary VanMatre)
Subject Re: [shale] Form token giving NPE
Date Tue, 02 May 2006 03:32:04 GMT
>Gary VanMatre wrote:
>>> From: Richard Wallace <rwallace@thewallacepack.net> 
>>>
>>> I'm trying to use the token component on a form to ensure that a user 
>>> doesn't submit the form more than once. Whenever I try and submit the 
>>> form a second time, I get a NPE. I'm using it in Clay, if that makes 
>>> any difference. The code is simply: 
>>>
>>> <form>
>>>    <span jsfid="token" id="token" />
>>>    <span jsfid="message" for="token" class="validation-msg" />
>>>    ...
>>> </form>
>>>
>>>
>>> I'm using the 1.0.3-SNAPSHOT jars from the maven-snapshot-repository, 
>>> last updated on April 19th. Any ideas why I'm getting the below NPE? 
>>>
>>>     
>>
>> It's working with myfaces 1.1.1.  The exception points at the findComponent 
>but I would have guessed that we are not populating one of the message component 
>attributes.   
>>
>> Try adding the showSummary attribute to the message component.
>>           <span jsfid="message" for="token" showSummary="true"  />
>> Gary
>>
>>   
>Sorry it's taken a while to get back to this, but it was suddenly 
>decided to change the whole flow of the app I'm working on. 
>
>I tried adding the showSummary="true" attribute and am getting the same 
>exception.  Any other ideas?
>
It looks as if this HtmlMessageRenderer class is in the tomahawk archive.  
It seems to be trying to find matching components for labels.  Are you 
sure you don't have a HtmlOutputLabel that has a null "for" attribute?
If you create a ticket and attach an example I'll try working throught it.

Gary


>Thanks,
>Rich
>>> Thanks, 
>>> Rich 
>>>
>>> java.lang.NullPointerException: expr 
>>> at 
>>> javax.faces.component.UIComponentBase.findComponent(UIComponentBase.java:210)

>>> at 
>>> 
>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H 
>>> tmlMessageRenderer.java:200) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H

>>> tmlMessageRenderer.java:214) 
>>> at 
>>> 
>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H 
>>> tmlMessageRenderer.java:214) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H

>>> tmlMessageRenderer.java:214) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H

>>> tmlMessageRenderer.java:214) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H

>>> tmlMessageRenderer.java:214) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H

>>> tmlMessageRenderer.java:214) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.createOutputLabelMap(H

>>> tmlMessageRenderer.java:214) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.getOutputLabelMap(Html

>>> MessageRenderer.java:184) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer.findInputLabel(HtmlMes

>>> sageRenderer.java:128) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessagesRenderer.getSummary(HtmlMessag

>>> esRenderer.java:54) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.HtmlMessageRendererBase.renderSingleFacesMessa

>>> ge(HtmlMessageRendererBase.java:101) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.HtmlMessagesRendererBase.renderList(HtmlMessag

>>> esRendererBase.java:94) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.HtmlMessagesRendererBase.renderMessages(HtmlMe

>>> ssagesRendererBase.java:75) 
>>> at 
>>> 
>>>org.apache.myfaces.renderkit.html.ext.HtmlMessagesRenderer.encodeEnd(HtmlMessage

>>> sRenderer.java:42) 
>>> at 
>>> javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:331) 
>>> at 
>>> org.apache.shale.clay.component.Clay.recursiveRenderChildren(Clay.java:379) 
>>>
>>>
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