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

On Thu, Dec 31, 2009 at 5:57 PM, Martin Smith <msmith999999(a)gmail.com&gt; 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(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users