Re: [rules-users] Drools in non-eclipse environment

-----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users- bounces(a)lists.jboss.org] On Behalf Of Abhay B. Chaware Sent: 09 June 2011 08:06 To: rules-users(a)lists.jboss.org Subject: [rules-users] Drools in non-eclipse environment Has anyone tried using drools in non-eclipse env ? meaning that org.eclipse.jdt.core_3.5.1.v_972_R35x.jar is not in the classpath ? Documentation says this : (http://docs.huihoo.com/drools/4.0.7/ch02s05.html) if you do not have Eclipse JDT Core in your classpath you must override the compiler setting before you instantiate this PackageBuilder, you can either do that with a packagebuilder properties file the ChainedProperties class will find, or you can do it programmatically as shown below; note this time I use properties to inject the value for startup. They also provide an example, but I am not able to figure out exactly how to use this example/info. Here is my code : KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newInputStreamResource(is), ResourceType.DRL); where "is" is input stream containing the rule file ( .drl) How do I override the compiler setting ? I am getting a null pointer exception ( see below ) and I suspect that overriding the packagebuilderconfiguration will fix it ? W/System.err(25511): java.lang.NullPointerException W/System.err(25511): at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:47) W/System.err(25511): at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1161) W/System.err(25511): at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:637) W/System.err(25511): at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java :267) W/System.err(25511): at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder .java:459) W/System.err(25511): at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja va:28) W/System.err(25511): at com.ts.DBconnector.readKnowledgeBase(DBconnector.java:146) _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users