Re: NullPointerException in _popComponentFromContext
Re: NullPointerException in _popComponentFromContext
- Subject: Re: NullPointerException in _popComponentFromContext
- From: Chuck Hill <email@hidden>
- Date: Thu, 25 Jun 2009 19:19:22 -0700
On Jun 25, 2009, at 7:10 PM, Ricardo J. Parada wrote:
On Jun 25, 2009, at 9:53 PM, Chuck Hill wrote:
Sigh...
Does anybody see anything obvious in this stack trace? I used to
have this exception ages ago and it was obscure. I don't recall
what ended up fixing it exactly but now that I moved my
application to Wonder I'm running into this again and haven't
figured out yet why or how to fix it. Any ideas?? Pleeeassee!! :-)
I have seen this before. It is caused by the context not knowing
the current component. This is hitting some action method. What
is it returning?
I see in the stack trace that it's going through the invokeAction
phase. But the action method that is supposed to get called has not
been called yet. I set a breakpoint in the method that it's
supposed to get called but I hit the exception first and the action
method never gets called.
I'll set a breakpoint in the invokeAction() method of the component
that is supposed to call the action to see how things look from there.
From what I can tell the _popComponentFromContext() gets the current
component from the context and then to message it and throws the
null pointer exception because the current component is null for
some obscure reason.
Anyways, I'm taking a look at the invokeAction in my component.
I really ought to take better notes when I hit things like this.
Chuck
--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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