Method connect

src/org/apache/pig/newplan/BaseOperatorPlan.java:191–201

Connect two operators in the plan, controlling which position in the edge lists that the from and to edges are placed. @param from Operator edge will come from @param fromPos Position in the array for the from edge @param to Operator edge will go to @param toPos Position in the array for the to edge

(Operator from,
                        int fromPos,
                        Operator to,
                        int toPos)

     * @param toPos Position in the array for the to edge
     */
    public void connect(Operator from,
                        int fromPos,
                        Operator to,
                        int toPos) {
        if( isConnected( from, to ) || from == null || to == null) {
            return;
        }
        markDirty();
        fromEdges.put(from, to, fromPos);
        toEdges.put(to, from, toPos);
    }
    
    /**
     * Check if given two operators are directly connected.