[jboss-jira] [JBoss JIRA] (DROOLS-5100) KieBase build fails with forall patterns containing "not equal" constraints

[Mario Fusco (Jira)]

     [ https://issues.redhat.com/browse/DROOLS-5100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco updated DROOLS-5100:
--------------------------------
    Sprint: 2020 Week 10-12 (from Mar 2)


> KieBase build fails with forall patterns containing "not equal" constraints
> ---------------------------------------------------------------------------
>
>                 Key: DROOLS-5100
>                 URL: https://issues.redhat.com/browse/DROOLS-5100
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 7.33.0.Final
>            Reporter: Matteo Casalino
>            Assignee: Mario Fusco
>            Priority: Major
>         Attachments: forall-not-equal-constraint.tgz
>
>
> as of Drools 7.33.0.Final, forall patterns with "not equal" (!=) constraints will break when building the KieBase.
> For example the following DRL:
> {noformat}
>     rule "forall with not equal"
>     when forall(String(this != "foo"))
>     then
>     end
> {noformat}
>     
> generates the following error:
> {noformat}
>     java.lang.StringIndexOutOfBoundsException: String index out of range: -1
>     
>     	at java.lang.String.substring(String.java:1967)
>     	at org.drools.core.rule.constraint.MvelConstraint.getLeftInExpression(MvelConstraint.java:608)
>     	at org.drools.core.rule.constraint.MvelConstraint.hashCode(MvelConstraint.java:602)
>     	at org.drools.core.reteoo.AlphaNode.calculateHashCode(AlphaNode.java:189)
>     	at org.drools.core.reteoo.AlphaNode.<init>(AlphaNode.java:89)
>     	at org.drools.core.reteoo.builder.PhreakNodeFactory.buildAlphaNode(PhreakNodeFactory.java:88)
>     	at org.drools.core.reteoo.builder.PatternBuilder.buildAlphaNodeChain(PatternBuilder.java:360)
>     	at org.drools.core.reteoo.builder.PatternBuilder.attachAlphaNodes(PatternBuilder.java:346)
>     	at org.drools.core.reteoo.builder.PatternBuilder.attachPattern(PatternBuilder.java:136)
>     	at org.drools.core.reteoo.builder.PatternBuilder.build(PatternBuilder.java:84)
>     	at org.drools.core.reteoo.builder.GroupElementBuilder$NotBuilder.build(GroupElementBuilder.java:220)
>     	at org.drools.core.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:68)
>     	at org.drools.core.reteoo.builder.GroupElementBuilder$AndBuilder.build(GroupElementBuilder.java:108)
>     	at org.drools.core.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:68)
>     	at org.drools.core.reteoo.builder.ReteooRuleBuilder.addSubRule(ReteooRuleBuilder.java:167)
>     	at org.drools.core.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:139)
>     	at org.drools.core.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:110)
>     	at org.drools.core.impl.KnowledgeBaseImpl.internalAddRule(KnowledgeBaseImpl.java:1525)
>     	at org.drools.core.impl.KnowledgeBaseImpl.internalAddPackages(KnowledgeBaseImpl.java:926)
>     	at org.drools.core.impl.KnowledgeBaseImpl.lambda$addPackages$2(KnowledgeBaseImpl.java:728)
>     	at org.drools.core.impl.KnowledgeBaseImpl.enqueueModification(KnowledgeBaseImpl.java:745)
>     	at org.drools.core.impl.KnowledgeBaseImpl.addPackages(KnowledgeBaseImpl.java:728)
>     	at org.drools.compiler.kie.builder.impl.AbstractKieModule.createKieBase(AbstractKieModule.java:226)
>     	at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:407)
>     	at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:375)
> {noformat}
> This is working fine when using Drools <= 7.32.0.Final.



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