Description of problem:
When extending an event (either in Java or as declarative), if the extended event has a @expires value smaller than its parent, then it is ignored and the parents @expires values is taken.

Example:
declare SimpleEvent
    @role( event ) 
    @timestamp( eventDate.getTime() ) 
    @expires( 2d ) 
end 

declare AvalancheEvent extends SimpleEvent 
    @role( event ) 
    @timestamp( eventDate.getTime() ) 
    @expires( 5m ) 
end 

The reason is in the following class: org.drools.core.reteoo.builder.PatternBuilder.

private static long getExpiratioOffsetForType(BuildContext context, 
                                                  ObjectType objectType) { 
   long expirationOffset = -1; 
   for ( TypeDeclaration type : context.getRuleBase().getTypeDeclarations() ) { 
       if ( type.getObjectType().isAssignableFrom( objectType ) ) { 
           expirationOffset = Math.max( type.getExpirationOffset(), 
                                        expirationOffset ); 
       } 
   } 
   // if none of the type declarations have an @expires annotation 
   // we return -1 (no-expiration) value, otherwise we return the 
   // set expiration value+1 to enable the fact to match events with 
   // the same timestamp 
   return expirationOffset == -1 ? -1 : expirationOffset+1; 
} 

It seems like we can only extends an event if the @expires value is greater than its parent.


Version-Release number of selected component (if applicable):
Drools 6.0.0.CR5

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