Method rewire

src/org/apache/pig/impl/plan/Operator.java:172–179

Make any necessary changes to a node based on a change of position in the plan. This allows operators to rewire their projections, etc. when they are relocated in a plan. @param oldPred Operator that was previously the predecessor. @param oldPredIndex position of the old prede

(Operator<V> oldPred, int oldPredIndex,
            Operator<V> newPred, boolean useOldPred)

     * @throws PlanException
     */
    public void rewire(Operator<V> oldPred, int oldPredIndex,
            Operator<V> newPred, boolean useOldPred) throws PlanException {
        //TODO
        //this method should be made abstract in the future
        if (oldPred == null) {
            return;
        }
    }
    
}