[rules-dev] Package building with declared model broken

[Michael Anstis]

Hmmm.... Rikkola can't replicate so something is broken here.... :(

On 28 April 2011 13:42, Michael Anstis <michael.anstis at gmail.com> wrote:

> Hi,
>
> This boiler plate code demonstrates a rather, I suspect large, problem:-
>
> @Test
>     public void testPackageAttributesFromDRL() {
>
>         KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
>         kbuilder.add( new ClassPathResource( "org/drools/example.drl" ), ResourceType.DRL
> ); //<--- Error
>
>         KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
>         kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
>
> }
>
> throws:-
>
> java.lang.NullPointerException
>     at
> org.drools.compiler.PackageBuilder.generateDeclaredBean(PackageBuilder.java:1433)
>     at
> org.drools.compiler.PackageBuilder.processTypeDeclarations(PackageBuilder.java:1272)
>     at
> org.drools.compiler.PackageBuilder.mergePackage(PackageBuilder.java:895)
>     at
> org.drools.compiler.PackageBuilder.newPackage(PackageBuilder.java:883)
>     at
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:601)
>     at
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:297)
>     at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:473)
>     at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
>     at
> org.drools.BinaryPackage.testPackageAttributesFromDRL(BinaryPackage.java:35)
>
> In org.drools.compiler.PackageBuilder.generateDeclaredBean the call to the
> following returns null.
>
> JavaDialectRuntimeData dialect = (JavaDialectRuntimeData)
> pkgRegistry.getDialectRuntimeRegistry().getDialectData( "java" );
>
> DRL is:-
>
> package example
>
> declare Person
>   age: Integer
>   name: String
> end
>
> rule "Row 1 dtable"
>   salience 1
>   dialect "mvel"
>   when
>     $p : Person( name == "Bill" , age != "30" )
>   then
>     $p.setAge( 12345 );
> end
>
> It worked OK yesterday.
>
> Any takers?
>
> With kind regards,
>
> Mike
>
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