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sowelie
 Post subject: Javassist Exception
PostPosted: Fri Aug 28, 2009 4:48 pm 
Beginner
Beginner

Joined: Wed Dec 17, 2008 12:10 pm
Posts: 47
Hey Guys,

I have no clue where to start with this one...

I am getting this exception intermittently:

Code:
java.lang.NullPointerException
   at javassist.util.proxy.RuntimeSupport$DefaultMethodHandler.invoke(RuntimeSupport.java:37)
   at com.verani.common.backPage.User_$$_javassist_33.getHibernateLazyInitializer(User_$$_javassist_33.java)
   at org.directwebremoting.hibernate.H3BeanConverter.getClass(H3BeanConverter.java:139)
   at com.verani.common.dwr.H3SmartBeanConverter.getPropertyMapFromObject(H3SmartBeanConverter.java:39)
   at com.verani.common.dwr.H3SmartBeanConverter.convertInbound(H3SmartBeanConverter.java:157)
   ... 27 more


I have upgraded to Javassist 3.9.0...this seemed to have worked for a while, but after the application has been running for a while the exceptions started cropping up again...I can't see any reason for this. I found a few posts here referencing a similar exception, but the solutions did not work. My class (User) already has a no-arg constructor. Also, I cannot disable proxying of the class because that causes all kinds of other problems.
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sowelie
 Post subject: Re: Javassist Exception
PostPosted: Fri Aug 28, 2009 4:51 pm 
Beginner
Beginner

Joined: Wed Dec 17, 2008 12:10 pm
Posts: 47
I forgot to mention...this only happens on my production server...even though it is running the same exact JVM as my development environment:
Code:
java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, mixed mode)
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sowelie
 Post subject: Re: Javassist Exception
PostPosted: Mon Aug 31, 2009 10:01 am 
Beginner
Beginner

Joined: Wed Dec 17, 2008 12:10 pm
Posts: 47
Anyone have any suggestions?? This is causing me a lot of trouble. I just upgraded to Hibernate 3.3.2 to hopefully solve the issue, but it did not. After the application has been running for a while, this error starts to crop up again!
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sowelie
 Post subject: Re: Javassist Exception
PostPosted: Tue Sep 01, 2009 1:58 pm 
Beginner
Beginner

Joined: Wed Dec 17, 2008 12:10 pm
Posts: 47
Although I have side-stepped the problem for now (by disabling proxying for the class in question) I would like to know what is causing this? I eventually would like the class to be lazy loaded...
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