// handle clash with already staged entries
case LeftTuple.INSERT :
leftTuples.removeInsert( leftTuple );
break;
case LeftTuple.UPDATE :
leftTuples.removeUpdate( leftTuple );
break;
}
if ( sm.getStagedLeftTuples().deleteSize() == 0 ) {
// staged is empty, so notify rule, to force re-evaluation
sm.notifyRuleLinkSegment( wm );