[rules-users] Drools 5.0 - can't make it use Janino compiler - always wants eclipse jar

[Martin Smith]

2010/1/5 Olli Knuuttila <olli.knuuttila at gmail.com>:
> I had the same problem and solved it like this after going through the
> source code:
>
>         Properties props = new Properties();
>         props.setProperty("drools.dialect.java.compiler", "JANINO");
>         KnowledgeBuilderConfiguration config =
> KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(props, null);
>         KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder(config);
>
> Yours,
> Olli

Thanks, that seems to have done the trick.

Martin

>
> On Thu, Dec 31, 2009 at 5:57 PM, Martin Smith <msmith999999 at gmail.com>
> wrote:
>>
>> Hi folks,
>>
>> I'm doing some very basic evaluation of Drools and can't get past the
>> first hurdle - the hello world example. I get this:
>>
>> ......
>> Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not
>> in the classpath
>>       at
>> org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:94)
>>       at
>> org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:55)
>>       at
>> org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:270)
>>
>> I'm not using Eclipse, my IDE is netbeans 6.8. I get the same error
>> running the compiled jar from outside netbeans as well so I don't
>> think it's related to the IDE.
>>
>> I modified the example by adding a knowledge builder config and then this:
>>
>> kconfig.setProperty("drools.dialect.java.compiler", "JANINO");
>>
>> This had no effect. I rewrote the example to use a package builder and
>> set the compiler property on it to JANINO. Again, it didn't work. I
>> also tried passing a -Dproperty with the same thing. Again, no effect.
>>
>> I have the janino jar from the download on the classpath along with
>> the other jars it says are necessary.
>>
>> It works if I download and add the eclipse jar to the classpath but I
>> don't want to do this as I don't want my runtime app to depend on
>> pieces of eclipse.
>>
>> I'm out of time and ideas now so asking for help here. These are the
>> drools related jars I have in the project:
>>
>> antlr-runtime-3.1.1.jar
>> drools-api-5.0.1.jar
>> drools-compiler-5.0.1.jar
>> drools-core-5.0.1.jar
>> joda-time-1.6.jar
>> mvel2-2.0.10.jar
>> janino-2.5.15.jar
>> xstream-1.3.1.jar
>>
>> Thanks,
>>
>> Martin
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>