Method createSoftLink

src/org/apache/pig/impl/plan/OperatorPlan.java:212–219

Create an soft edge between two nodes. @param from Operator dependent upon. @param to Operator having the dependency. @throws PlanException if the nodes is not in plan

(E from, E to)

     * @throws PlanException if the nodes is not in plan
     */
    public void createSoftLink(E from, E to) throws PlanException {
        // Check that both nodes are in the plan.
        checkInPlan(from);
        checkInPlan(to);

        mSoftFromEdges.put(from, to);
        mSoftToEdges.put(to, from);
    }

    /**
     * Remove an soft edge