Can you provide your DRL and DSL? Have you included a reference to "expander" in your DRL?
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of tansey Sent: 31 October 2007 07:55 To: [email protected] Subject: [rules-users] Problem with DSL in Drools 4.0.3 I'm new to Drools, and I've setup the latest version of it in Eclipse 3.2. I'm having trouble whenever I try to use a DSL though. I took the standard Hello World example and added the 'mylang.dsl' file, and changed the lines in DroolsTest.readRule() as follows: private static RuleBase readRule() throws Exception { //read in the source Reader source = new InputStreamReader( DroolsTest.class.getResourceAsStream( "/Sample.drl" ) ); //optionally read in the DSL (if you are using it). Reader dsl = new InputStreamReader( DroolsTest.class.getResourceAsStream( "/mylang.dsl" ) ); //Use package builder to build up a rule package. //An alternative lower level class called "DrlParser" can also be used... PackageBuilder builder = new PackageBuilder(); //this wil parse and compile in one step //NOTE: There are 2 methods here, the one argument one is for normal DRL. //builder.addPackageFromDrl( source ); //Use the following instead of above if you are using a DSL: builder.addPackageFromDrl( source, dsl ); //get the compiled package (which is serializable) Package pkg = builder.getPackage(); //add the package to a rulebase (deploy the rule package). RuleBase ruleBase = RuleBaseFactory.newRuleBase(); ruleBase.addPackage( pkg ); return ruleBase; } Even if I remove all rules from the dsl file, it still gives me the same error: org.drools.rule.InvalidRulePackage: [4] Unable to expand: m : Message( status == Message.HELLO, message : message ) [6] Unable to expand: System.out.println( message ); [7] Unable to expand: m.setMessage( "Goodbye cruel world" ); [8] Unable to expand: m.setStatus( Message.GOODBYE ); [9] Unable to expand: update( m ); [5] Unable to expand: m : Message( status == Message.GOODBYE, message : message ) [7] Unable to expand: System.out.println( message ); [8] Unable to expand: m.setMessage( message ); at org.drools.rule.Package.checkValidity(Package.java:424) at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:361) at com.sample.DroolsTest.readRule(DroolsTest.java:64) at com.sample.DroolsTest.main(DroolsTest.java:21) Anyone have an idea of what's wrong? -- View this message in context: http://www.nabble.com/Problem-with-DSL-in-Drools-4.0.3-tf4722439.html#a13501 597 Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
