[rules-users] Problems building Package

[Mark Proctor]

thomas kukofka wrote:
> Hello,
>
> I get the following Nullpointer exception when building the package:
Looks like a bug, please opn a JIRA with a test case.
>
> java.lang.NullPointerException
>     at 
> org.drools.rule.AbstractCompositeRestriction.getRequiredDeclarations(AbstractCompositeRestriction.java:29)
>     at 
> org.drools.rule.MultiRestrictionFieldConstraint.getRequiredDeclarations(MultiRestrictionFieldConstraint.java:27)
>     at org.drools.rule.Pattern.setConstraintType(Pattern.java:279)
>     at org.drools.rule.Pattern.addConstraint(Pattern.java:157)
>     at 
> org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:340)
>     at 
> org.drools.rule.builder.PatternBuilder.buildConstraint(PatternBuilder.java:199)
>     at 
> org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:168)
>     at 
> org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:93)
>     at 
> org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:69)
>     at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:53)
>     at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:446)
>     at 
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:304)
>     at 
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167)
>     at 
> com.dssrules.RuleEngineAdapter.initRuleBase(RuleEngineAdapter.java:71)
>     at 
> com.dssrules.TestRuleEngineAdapter.main(TestRuleEngineAdapter.java:17)
> Exception in thread "main" java.lang.NullPointerException
>     at com.dssrules.RuleEngineAdapter.insert(RuleEngineAdapter.java:42)
>     at 
> com.dssrules.TestRuleEngineAdapter.main(TestRuleEngineAdapter.java:35)
>
> Debugging shows the programm get stuck in this line (the resource 
> drl-file was found):
> * builder0.addPackageFromDrl(new 
> InputStreamReader(resource.getInputStream()));
>
> I have further the error message: Missing package name for rule 
> package."  Although the package declaration in the drl-file should be 
> ok, it worked in the previous drl version. I don't know why it doesn't 
> work anymore.
>
> Regards
> Thomas
>
> *
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>
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