[rules-users] NoClassDefFoundError for BaseObjectClassFieldExtractor when running in Tomcat

[Fernando Meyer]

It seems to be a bug, please could you open a Ticket in jira and  
provide additional information for that?

Thanks

Fernando Meyer http://fmeyer.org
fmcamargo at gmail.com
PGP: 0xD804DDFB



On Jul 18, 2007, at 9:16 AM, Jesse Stockall wrote:

> The NoClassDefFoundError exception is thrown from within drools  
> code, so it's obviously in the classpath. The problem appears to be  
> with the mechanism used by drools to load it's own code.
>
> Jesse
>
> On Wed, 2007-18-07 at 02:14 -0300, Fernando Meyer wrote:
>> You should add the drools-core library as a required dependency.
>>
>> Fernando Meyer http://fmeyer.org
>> fmcamargo at gmail.com
>> PGP: 0xD804DDFB
>>
>>
>>
>>
>>
>> On Jul 17, 2007, at 9:55 AM, Jesse Stockall wrote:
>>
>>> Tomcat 5.5
>>> Java 1.5
>>> jbossrules-4.0.0.12865MR3
>>>
>>> I have an instance of Drools running inside a webapp deployed on  
>>> Tomcat. The rules have been compiled ahead of time and are loaded  
>>> in with:
>>>
>>> InputStream is = PolicyRuntime.class.getResourceAsStream(name);
>>> DroolsObjectInputStream in = new DroolsObjectInputStream(is);
>>> Package p = (Package) in.readObject();
>>>
>>> When run outside Tomcat it loads fine, when run inside Tomcat I get:
>>>
>>> java.lang.NoClassDefFoundError: org/drools/base/extractors/ 
>>> BaseObjectClassFieldExtractor
>>> at java.lang.ClassLoader.defineClass1(Native Method)
>>> at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
>>> at org.drools.base.ClassFieldExtractorFactory 
>>> $ByteArrayClassLoader.defineClass(ClassFieldExtractorFactory.java: 
>>> 455)
>>> at  
>>> org.drools.base.ClassFieldExtractorFactory.getClassFieldExtractor 
>>> (ClassFieldExtractorFactory.java:114)
>>> at org.drools.base.ClassFieldExtractor.init 
>>> (ClassFieldExtractor.java:77)
>>> at org.drools.base.ClassFieldExtractor.<init> 
>>> (ClassFieldExtractor.java:57)
>>> at org.drools.base.ClassFieldExtractorCache.getExtractor 
>>> (ClassFieldExtractorCache.java:35)
>>> at org.drools.base.ClassFieldExtractor.readResolve 
>>> (ClassFieldExtractor.java:72)
>>>
>>> I've tried adding DroolsObjectInputStream.class.getClassLoader 
>>> () , PolicyRuntime.class.getClassLoader() and Thread.currentThread 
>>> ().getContextClassLoader() to the constructor of the  
>>> DroolsObjectInputStream but none had any effect.
>>>
>>> Thanks
>>>
>>> Jesse
>>>
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
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