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

Thanks Edson. Here it is : rule "CALCUL_RELICAT_CP" salience 8 no-loop when not $RELICAT_CP : VOCounter (code=="RELICAT_CP") $startDate : RuleDate(name=="startDate") $endDate : RuleDate(name=="endDate") $SOLDE_CP_CUM : VOCounter ( code=="SOLDE_CP_CUM", startDate.year == ($startDate.year - 1) ) then VOCounter $relicat = createCounter(drools,"RELICAT_CP",$SOLDE_CP_CUM.value); insert($relicat); insert(createCounter(drools,"SOLDE_RELICAT_CP",$SOLDE_CP_CUM.value)); end I thought about trying with a newer version of mvel, but it doesn't look so easy to upgrade it :( 2008/12/15 Edson Tirelli <tirelli(a)post.com&gt;: > > 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 > > -- Seules 2 choses sont infinies : l'univers et la bêtise humaine ; et encore pour l'univers, je ne suis pas sûr … (Einstein)