Re: [rules-dev] MVEL in functions?

As MVEL functions can't be called directly from java, this doesn't work yet. I did get MVEL functions to work from the drools-clips module, so there is some plumbing for this. We'd probably have to generate stab wrappers to get MVEL functions working in DRL itsef, so both java and mvel semantics can call it. Mark Michael Neale wrote: OK created this: https://jira.jboss.org/jira/browse/JBRULES-2298 On Tue, Oct 13, 2009 at 9:38 AM, Michael Neale <michael.neale(a)gmail.com&gt; wrote: Hi Steve - yes that seems to work - hence why I have not noticed it before. I wonder with 4.0.x if it was actually using MVEL for the function body, or flipping back to the java dialect (which is what happens when you put it in a different DRL now). On Tue, Oct 13, 2009 at 1:24 AM, Steve Ronderos <steve.ronderos(a)ni.com&gt; wrote: Hi Michael, We are experiencing the same issue.  We have had to put our functions in a different .drl to get around this for now.  If it helps any, this was working ok in version 4.0.7, and broke when we went to 5.0.1. Thanks, Steve Ronderos rules-dev-bounces(a)lists.jboss.org wrote on 10/11/2009 11:52:04 PM: [image removed] [rules-dev] MVEL in functions? Michael Neale to: Rules Dev List 10/11/2009 11:53 PM Sent by: rules-dev-bounces(a)lists.jboss.org Please respond to Rules Dev List Hey is mvel in functions broken? I have a distant memory of something along these lines. I was just trying something like: package jboss.cloud dialect "mvel" #trying to get functions working... rule "something"     when         s: SimpleFact(id == 42, name == "michael")     then         System.out.println("hello"); end function String doSomething() {  return "hey"; } And I get: java.lang.NullPointerException    at org.drools.rule.builder.dialect.mvel.MVELDialect.compile (MVELDialect.java:510)    at org.drools.rule.builder.dialect.mvel.MVELDialect.addFunction (MVELDialect.java:338)    at org.drools.compiler.PackageBuilder.addFunction(PackageBuilder.java:1104)    at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:626)    at org.drools.compiler.PackageBuilder.addPackageFromDrl (PackageBuilder.java:290)    at org.drools.compiler.PackageBuilder.addKnowledgeResource (PackageBuilder.java:488)    at org.drools.builder.impl.KnowledgeBuilderImpl.add (KnowledgeBuilderImpl.java:25) (haven't tried trunk) - anyone else seen this? removing the dialect "mvel" at the package level at it is fine. -- Michael D Neale home: www.michaelneale.net blog: michaelneale.blogspot.com _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev -- Michael D Neale home: www.michaelneale.net blog: michaelneale.blogspot.com _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev