Can you post the "drl generated string" you are referring to? -W 2010/3/10 Bertrand Grottier <b_grott...@hotmail.com>: > Hello, > > I want to use template rules. Here is my .drt file: > > template header > ddeb > dfin > prix > > package com.tarification > > import java.util.Date ; > > import tarification.Produit ; > import java.text.SimpleDateFormat; > > function Date getDate(String pStrDate) > { > SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy"); > return sdf.parse(pStrDate) ; > } > > template "tarification_produit" > > rule "peri...@{row.rownumber}" > when > $p : Produit(id == 1, eval( dDeb.before( getDate("@{ddeb}") ) ) ) > then > $p.setId(2) ; > $p.setPrix(@{prix}) ; > update( $p ); > end > end template > > > I modified an example provided with Drools but encounter the following > exception: > > Exception in thread "main" org.drools.RuntimeDroolsException: Exception > executing predicate > com.tarification.rule_periode2_0predicate0invo...@2110b61d > at > org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279) > at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143) > at > org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42) > at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147) > at > org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42) > at > org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185) > at > org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146) > at > org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046) > at > org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001) > at > org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788) > at tarification.TestTemplate.executeExample(TestTemplate.java:49) > at tarification.TestTemplate.main(TestTemplate.java:26) > Caused by: java.lang.NullPointerException > at com.tarification.Rule_Periode2_0.predicate0(Rule_Periode2_0.java:9) > at > com.tarification.Rule_Periode2_0Predicate0Invoker.evaluate(Rule_Periode2_0Predicate0Invoker.java:23) > at > org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:272) > ... 11 more > > I am puzzle because when I copy the drl generated string in a drl file, > everything works fine. > > Any idea ? Thank you in advance. > > Regards, > Benoît > > > ________________________________ > Commander un cadeau en ligne discrètement? Voir la solution offerte par > Internet Explorer8 > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > >
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