for ( LeftTuple leftTuple = srcLeftTuples.getUpdateFirst(); leftTuple != null; ) {
LeftTuple next = leftTuple.getStagedNext();
final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
PropagationContext context = leftTuple.getPropagationContext();
constraints.updateFromTuple( contextEntry,
wm,
leftTuple );
RightTuple rightTuple = accNode.getFirstRightTuple( leftTuple,
rtm,