[rules-users] The Eclipse JDT Core jar is not in the classpath error

[Chris Richmond]

Ed,

 

Thanks for the feedback.  That's pretty much the conclusion I have come
to..I will double  check the higher priority reference, that sounds possible
because we are using Ivy for dependencies with many package dependencies..

 

Thanks very much for the insights.

 

Chris

 

  _____  

From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Edson Tirelli
Sent: Tuesday, June 02, 2009 9:42 AM
To: Rules Users List
Subject: Re: [rules-users] The Eclipse JDT Core jar is not in the classpath
error

 


   Chris,

   There must be a problem with the classpath. That message only shows up
when the antlr-runtime jar is not in the classpath.

java.lang.

NoClassDefFoundError: org/antlr/runtime/tree/TreeNodeStream

    Also, I successfully run examples from command line, outside of eclipse,
so it is unlikely that you are being hit by some hidden dependency.

    Sorry for not helping you more, but continue investigating your netbeans
project classpath for "odd" things.

    Oh, and BTW, antlr runtimes are not compatible between versions, so, if
your netbeans has a different antlr runtime jar in the classpath in a higher
priority search order, it will give you similar problems.

    []s
    Edson

 

2009/6/2 Chris Richmond <crichmond at referentia.com>

Marcus,

I only have the one version of antlr jar that comes in the /lib folder of
the drools 5.0 binary distribution, however that was enough to allow me to
run the stockticker fusion sample in eclipse no problem.  I ported the
project to Netbeans and am relying on all of the same jars from that binary
distribution, but getting this error now.   Perhaps there is something that
is being provided by the eclipse drools plugin?

Thanks,
Chris


-----Original Message-----
From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Marcus Ilgner
Sent: Monday, June 01, 2009 11:14 PM
To: Rules Users List
Subject: Re: [rules-users] The Eclipse JDT Core jar is not in the classpath
error

2009/6/2 Chris Richmond <crichmond at referentia.com>:
> Hello,
>
>
>
> I am using netbeans and ivy with Drools 5.  I have successfully named,
> published the jars from drools to and could build my port of the stock
> ticker application in netbeans, but when I try to run it, I get the
> following error:
>
>
>
>
>
> java.lang.NoClassDefFoundError: org/antlr/runtime/tree/TreeNodeStream
>
>
>
> I have the antlr-runtime jar from the bin/lib on my classpath where I
added
> all the others, but it always fails at this line
>
> In loadRuleBase() in Broker.java of the stock ticker sample
>
>
>
> builder.add( ResourceFactory.newInputStreamResource(
> Broker.class.getResourceAsStream( RULES_FILE ) ),
>
> ResourceType.DRL);.
>
>
>
>
>
> Does anyone have any ideas what jar I might be missing if it's not the
> antlr-runtime?
>
>
>
> Thanks,
>
> Chris
>

Hi,

in one of my projects, I actually needed two different versions of
antlr in the classpath. Did you check if the class referenced in the
exception actually exists in the deployed antlr jar file?

Best regards
Marcus

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-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com

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