source: fedd/abac-src/ttg/process/ControlEdge.java @ ab37086

package com.nailabs.abac.process;

import com.nailabs.abac.trust.*;
import edu.stanford.peer.rbtm.credential.*;
import java.util.*;

/**
 * A control edge represents an edge in a trust target graph (<CODE>TTG</CODE>)
 * with the required roles to support this edge. 
 */
public class ControlEdge extends EdgeOperation {
    /** Jared: Added this method to make XML processing easier */
    public ControlEdge() {
        super();
        type = "Control";
    }
    
    public ControlEdge(Goal parent, Goal child, ProcessingState state) {
        super(parent, child, state, null);
        type = "Control";
    }
    
    public void performAdditional(TTG graph) {
        SimpleTTNode parent = (SimpleTTNode)graph.getNodeByHash(getParent());
        TargetNode child = (TargetNode)graph.getNodeByHash(getChild());

        parent.addControlChild(child);
        child.addControlParent(parent);
    }
    
    public void performNewAdditional(TTG graph) {
        TargetNode child = (TargetNode)graph.getNodeByHash(getChild());
        if(child == null) {
            child = (TargetNode)TTGNode.createNode(getChild());
            child.getProcessingState().update(state);
            graph.putNodeByHash(child);
        }
        performAdditional(graph); 
    }

    public String toString() {
        StringBuffer buff = new StringBuffer("[ControlEdge  ");
        buff.append(getParent()).append(" <<=== ");
        buff.append(getChild()).append(", state = ");
        buff.append(state).append("]");
        return buff.toString();
    }
}