Method getPredecessors

src/org/apache/pig/impl/plan/OperatorPlan.java:329–331

Find all of the nodes that have edges to the indicated node from themselves. @param op Node to look to @return Collection of nodes.

(E op)

     * @return Collection of nodes.
     */
    public List<E> getPredecessors(E op) {
        return mToEdges.get(op);
    }


    /**