Mario Fusco created JBRULES-3673: ------------------------------------ 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) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira