Re: [rules-users] Unable to resolve token on function call with mvel dialect

Can you plz show us the DRL instead of the DSLR for your rule? use the DRLViewer tab for that... 2008/12/15 Olivier THIERRY <olivier.thierry(a)gmail.com&gt; > > Hi, > > I use drools 4.0.7 and I encounter a problem calling a function from a > rule written for mvel dialect. > > The function I need to call has this signature : > > function VOCounter createCounter(org.drools.spi.KnowledgeHelper > drools, String code, Number number) > > When I call this function, I want to assign result to a variable, for > example to insert it to working memory later, or just to use it in > another function call. > So I wrote something like that (I am writing a DSL so part of the code is > DSL ): > > rule "CALCUL_RELICAT_CP" > salience 8 > no-loop > when > not There is a counter called "RELICAT_CP" > There is a date called "startDate" > There is a date called "endDate" > There is a counter called "SOLDE_CP_CUM" with > - start date is last year > then > > VOCounter $relicat = > > createCounter(drools,"RELICAT_CP",$SOLDE_CP_CUM.value); > > insert($relicat); > Copy counter $SOLDE_CP_CUM to SOLDE_RELICAT_CP > end > > But I have the following stack trace : > > org.drools.spi.ConsequenceException: > org.mvel.UnresolveablePropertyException: unable to resolve token: > createCounter(drools,"RELICAT_CP",$SOLDE_CP_CUM.value) > at > org.drools.base.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:13) > at > org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:558) > at > org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:518) > at > org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:475) > at > org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:439) > at > fr.horoquartz.t4.test.drools.TestRuleBase.executeRuleWithDsl(TestRuleBase.java:120) > at fr.horoquartz.t4.test.drools.Test1.testDsl(Test1.java:39) > Caused by: org.mvel.UnresolveablePropertyException: unable to resolve > token: createCounter(drools,"RELICAT_CP",$SOLDE_CP_CUM.value) > at > org.mvel.ast.PropertyASTNode.initializePropertyNode(PropertyASTNode.java:129) > at > org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(PropertyASTNode.java:24) > at org.mvel.ExecutableAccessor.getValue(ExecutableAccessor.java:45) > at > org.mvel.ast.TypedVarNode.getReducedValueAccelerated(TypedVarNode.java:43) > at org.mvel.MVELRuntime.execute(MVELRuntime.java:90) > at > org.mvel.CompiledExpression.getValue(CompiledExpression.java:111) > at org.mvel.MVEL.executeExpression(MVEL.java:235) > at > org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:48) > at > org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:554) > ... 34 more > > What is strange is that it works if I don't assign function call > result to a variable. For example the following works : > > insert (createCounter(drools,"RELICAT_CP",$SOLDE_CP_CUM.value)); > > It also works if I assign $SOLDE_CP_CUM.value to a temporary variable > and use it for function call : > > Number $val = $SOLDE_CP_CUM.value; > VOCounter $relicat = createCounter(drools,"RELICAT_CP",$val); > insert($relicat); > > I had not this problem using java dialect. I understand nothing in > what happens ... Anyone has an idea what the problem is ? > > Thanks in advance, > > Olivier > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss, a division of Red Hat @ www.jboss.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users