[jboss-jira] [JBoss JIRA] (JBRULES-3673) Fact metadata declared in a POJO are lost when declaring fact metadata in DRL

[Mario Fusco (JIRA)]

Mario Fusco created JBRULES-3673:
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             Summary:  Fact metadata declared in a POJO are lost when declaring fact metadata in DRL
                 Key: JBRULES-3673
                 URL: https://issues.jboss.org/browse/JBRULES-3673
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
            Reporter: Mario Fusco
            Assignee: Mario Fusco


Assume a POJO is used as a fact and annotated with @Position as follows:

public class PositionAnnotatedEvent {

  @Position(1)
  private String arg1;

  @Position(0)
  private String arg0;

  // getters and setters
}

When I add some metadata to this class in DRL, for example:

declare org.jboss.qa.brms.bre.regression.POJOAnnotationMergeTest.PositionAnnotatedEvent
    @role(event)
end 

Then the following rule using positional arguments does not compile, producing an IndexOutOfBoundsException with message 'Error trying to access field at position 0'. The same rule with named arguments compiles:

rule 'sample rule' 
when 
  org.jboss.qa.brms.bre.regression.POJOAnnotationMergeTest.PositionAnnotatedEvent( 'value1', 'value2'; ) 
then
end 

The relevant stack trace follows:

java.lang.IndexOutOfBoundsException: Error trying to access field at position 0
	at org.drools.factmodel.ClassDefinition.getField(ClassDefinition.java:162)
	at org.drools.rule.builder.PatternBuilder.processPositional(PatternBuilder.java:432)
	at org.drools.rule.builder.PatternBuilder.processConstraintsAndBinds(PatternBuilder.java:392)
	at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:310)
	at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:131)
	at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:65)
	at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:80)
	at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:2578)
	at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:970)
	at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:456)
	at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:643)
	at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:41)

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