Re: [rules-users] How to dump the class/src generated by .drl file?
In my experience dealing with these issues, it was reasonably
straightforward to figure what was going on by breakpointing on the
NPE, checking the variable in the stack trace and then looking back at
the drl file.
On 8/7/07, Yang Song <starsy(a)gmail.com> wrote:
Thanks a lot Mark, it works.
Have a good day. :)
Yang
On 8/7/07, Mark Proctor <mproctor(a)codehaus.org> wrote:
>
> There is no standard api for this, you would have to get your hands dirty
with the source. Look at JavaRuleClassBuilder and you can see where to put
your printouts.
>
> Mark
> Yang Song wrote:
>
>
> Greetings everyone,
>
> Does anyone know how to dump the class generated from .drl file to disk?
Or even better if the generated Java source file can be dumped?
>
> Looking for some hints here, I got a NPE when firing the rules. However,
it is really hard to find out why the NEP was thrown... If I can have the
dumped class file, then I can be disassemble it back to Java code.
>
> To debug this rule in Eclipse is a bit difficult here, because the
project is a little "big" and we usually use logging to do debugging...
>
> java.lang.NullPointerException
> at
monitor.Rule_ftp_other_host_alarm_0.consequence(Rule_ftp_other_host_alarm_0.java:23)
> at
monitor.Rule_ftp_other_host_alarm_0ConsequenceInvoker.evaluate(Rule_ftp_other_host_alarm_0ConsequenceInvoker.java:26)
> at
org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:545)
> at
org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:509)
> at
org.drools.common.AbstractWorkingMemory.fireAllRules
(AbstractWorkingMemory.java:430)
> at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:392)
> at
com.monitor.ruleengine.InferenceMachine.fireAllRules(InferenceMachine.java
:400)
> at
com.monitor.ruleengine.InferenceMachine.run(InferenceMachine.java:314)
> at java.lang.Thread.run(Thread.java:595)
>
> Thanks very much,
> Yang________________________________
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