Re: Strange Exception Continues
Re: Strange Exception Continues
- Subject: Re: Strange Exception Continues
- From: Ken Anderson <email@hidden>
- Date: Sat, 19 Mar 2005 09:54:26 -0500
Andrew,
The best recommendation I have is to put in plenty of log messages (either through something like log4j or just System.out.println) to narrow down where the problem is occurring. That's what I do in such circumstances.
Ken
On Mar 19, 2005, at 9:41 AM, Andrew Kinnie wrote:
Greetings:
About a week ago, I sent an email to the list about a completely useless exception I have been getting:
Application:
MyApp
Error:
java.lang.NullPointerException
Reason:
Stack trace:
File
Line#
Method
Package
NA : Non applicable, JIT activated
This gives me virtually no information, and I have no idea what to do about it. I am running WO 5.2 on Mac OS X Client for deployment. Openbase is the back-end database. I am developing the site on a different Mac OS X Client machine. This exception only occurs on the deployment machine, and only when I go to one particular database driven component. This component has not been recently changed, and was working fine before a week or so ago (I did other minor changes to other parts of the site, and those parts work).
The database is pretty simple, and has only about 5 tables represented by EOs. I did add a column to one of the tables in the EOModel, and I reflected this on the deployment machine by adding a column directly on the database, and filling it in appropriately. (The development tools are not on the deployment machine) This new column affects one of the other components, which works (in addition to the one that doesn't.
I have checked the various logs and the console when the exception occurs, and there doesn't seem to be anything to explain the problem.
Basically, the site is now useless, and I am being left with the possibility of again having to consider other application platforms, because I can't get this to work, or a complete reinstall of the OS, the database, WebObjects, etc.
Any help would be appreciated. _______________________________________________
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