source: fedd/abac-src/ttg/test/TextGraphObserver.java @ 8780cbec

package com.nailabs.abac.test;

import java.util.*;
import java.io.*;

import com.nailabs.abac.trust.*;
import com.nailabs.abac.process.*;

public class TextGraphObserver implements Observer {

    HashMap nodeMap = new HashMap(10);
    PrintStream out;
    int count = 0;

    public TextGraphObserver(String name) {
        try {
            out = new PrintStream(new FileOutputStream(name + ".xml"));
        }
        catch(Exception ex) {
            ex.printStackTrace(out);
        }
        out.println("<?xml version=\"1.0\"?>\n<Negotiation>");
    }


    public void update(TTGNode node) {
        if(!nodeMap.containsKey(node.getGoal().toString())) {
            nodeMap.put(node.getGoal().toString(), node);
            node.addObserver(this);
            //out.print("<!--Now observing node for ");
            //out.print(node.getGoal().toString());
            //out.println("-->");
        }
    }

    public void update(Observable o, Object arg) {
        if(o instanceof TTG) {
            if(arg instanceof TTGNode) {
                update((TTGNode)arg);
                out.println("<!--updating from TTG-->");
                return;
            }
            out.print("<Observation count=\"");
            out.print(++count);
            out.println("\">");
            
        } else {        
            if(o instanceof TTGNode && !(arg instanceof SatisfactionState)) {
                return;         // skip over all but satisfaction states
            }
            out.print("<Observation count=\"");
            out.print(++count);
            out.println("\">");
            if(o instanceof XMLizable) {
                out.print(((XMLizable)o).toXML());
            } else {
                out.print(o);
            }
        }
        if(arg instanceof XMLizable) {
            out.print(((XMLizable)arg).toXML());
        } else {
            out.print(arg);
        }
        out.println("</Observation>\n");

        out.flush();
    }

    public void close() {
        out.print("\n<!--");
        out.print(count);
        out.println(" total observable events-->");
        out.println("</Negotiation>");
        out.flush();
        out.close();
    }

}