[rules-users] Drools examples don't run

[赵侃侃]

No, the NPE is all I've got in the console output.

Can you detail what process definition that you are referring to? I saw all
the rules definition files are all copied over to the classpath after
conducting the compile.

Namely, those files are borker.drl, notify.drl, position.drl, position.rf
and stocktickstream.dat. All of them now exist under
project-root/target/classes

Best Regards,
Kevin Zhao


2010/10/21 Michael Anstis <michael.anstis at gmail.com>

> Are there any errors in addition to the NPE?
>
> The context of the stack-trace suggests the process definition being loaded
> is not on your classpath.
>
> 2010/10/21 赵侃侃 <kevin223 at gmail.com>
>
> Thanks Bruno,
>>
>> I have now fixed the NoClassDefFoundError, any ideas about the NullPointer
>> one?
>>
>> Best Regards,
>> Kevin Zhao
>>
>> 2010/10/20 Bruno Freudensprung <bruno.freudensprung at temis.com>
>>
>>>
>>> Hello,
>>>
>>> I think you have to add the xstream jar to your classpath.
>>> Here is the Maven dependency :
>>>
>>>     <dependency>
>>>       <groupId>com.thoughtworks.xstream</groupId>
>>>       <artifactId>xstream</artifactId>
>>>       <version>1.3.1</version>
>>>     </dependency>
>>>
>>> Best regards,
>>>
>>> Bruno.
>>>
>>>
>>> 赵侃侃 a écrit :
>>>
>>> Hello,
>>>
>>>  I checked out the latest source from svn repository. It compiled OK and
>>> imported the example projects to my eclipse workspace but the examples run
>>> with error.
>>> The two example projects are namely drools-examples-drl
>>> & drools-examples-fusion.
>>>
>>>  org.drools.examples.pacman.Main gives the errors:
>>>
>>>  Exception in thread "main" java.lang.NoClassDefFoundError:
>>> com/thoughtworks/xstream/XStream
>>>  at
>>> org.drools.audit.KnowledgeRuntimeLoggerProviderImpl.newThreadedFileLogger(KnowledgeRuntimeLoggerProviderImpl.java:34)
>>>  at
>>> org.drools.logger.KnowledgeRuntimeLoggerFactory.newThreadedFileLogger(KnowledgeRuntimeLoggerFactory.java:69)
>>>  at org.drools.examples.pacman.Main.initKsession(Main.java:88)
>>>  at org.drools.examples.pacman.Main.main(Main.java:39)
>>> Caused by: java.lang.ClassNotFoundException:
>>> com.thoughtworks.xstream.XStream
>>>  at java.net.URLClassLoader$1.run(Unknown Source)
>>>  at java.security.AccessController.doPrivileged(Native Method)
>>>  at java.net.URLClassLoader.findClass(Unknown Source)
>>>  at java.lang.ClassLoader.loadClass(Unknown Source)
>>>  at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
>>>  at java.lang.ClassLoader.loadClass(Unknown Source)
>>>  ... 4 more
>>>
>>>
>>>  org.drools.examples.broker.Main gives the errors:
>>>
>>>  java.lang.NullPointerException
>>>  at
>>> org.drools.compiler.PackageBuilder.addProcessFromXml(PackageBuilder.java:432)
>>>  at
>>> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:468)
>>>  at
>>> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
>>>  at org.drools.examples.broker.Broker.loadRuleBase(Broker.java:95)
>>>  at org.drools.examples.broker.Broker.createSession(Broker.java:80)
>>>  at org.drools.examples.broker.Broker.<init>(Broker.java:57)
>>>  at org.drools.examples.broker.Main.main(Main.java:53)
>>>
>>>  Does anyone experience the similar issues and know how to fix that?
>>>
>>>  Best Regards,
>>> Kevin
>>>
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>>>
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