[jboss-jira] [JBoss JIRA] Created: (JBRULES-2872) NPE in AbstractCompositeRestriction when using unbound variables

[Wolfgang Laun (JIRA)]

NPE in AbstractCompositeRestriction when using unbound variables
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                 Key: JBRULES-2872
                 URL: https://issues.jboss.org/browse/JBRULES-2872
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-compiler
    Affects Versions: 5.1.1.FINAL
            Reporter: Wolfgang Laun
            Assignee: Mark Proctor


This occurs with a pattern such as 
   Cell( rowNo == $rano || == $rbno, colNo != $c1no && != $c2no, free contains $i )
where one or more of the bound variables $* are not bound in previous patterns.

Exception in thread "main" java.lang.NullPointerException
	at org.drools.rule.AbstractCompositeRestriction.getRequiredDeclarations(AbstractCompositeRestriction.java:59)
	at org.drools.rule.MultiRestrictionFieldConstraint.getRequiredDeclarations(MultiRestrictionFieldConstraint.java:73)
	at org.drools.rule.Pattern.setConstraintType(Pattern.java:358)
	at org.drools.rule.Pattern.addConstraint(Pattern.java:226)
	at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:432)
	at org.drools.rule.builder.PatternBuilder.buildConstraint(PatternBuilder.java:264)
	at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:213)
	at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:108)
	at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:69)
	at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:78)
	at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1203)
	at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:629)
	at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:278)
	at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:451)
	at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
	at org.drools.examples.sudoku.rules.DroolsUtil.readKnowledgeBase(DroolsUtil.java:33)
	at org.drools.examples.sudoku.Main.<init>(Main.java:87)
	at org.drools.examples.sudoku.Main.main(Main.java:68)


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