if ( sm.getStagedLeftTuples().deleteSize() == 0 ) {
// staged is empty, so notify rule, to force re-evaluation
sm.notifyRuleLinkSegment( wm );
}
leftTuple.setPropagationContext( context );
leftTuples.addDelete( leftTuple );
}
}
if ( lm.getAndDecreaseCounter() == 1 ) {
lm.unlinkNode( wm );