if( ( lastParentId == null ) || !lastParentId.equals( parentNode.getNodeId() ) ) {
oc.addOccurrences( 1 );
}
if( !docAdded ) {
oc.addDocument( storedDocument );
docAdded = true;
}
lastParentId = parentNode.getNodeId();
}
//TODO : what if contextSet == null ? -pb