matrix.java

JAVA Servlet2.3外文书籍源码

package monitor;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;

public class Matrix {

    private ArrayList requestList = new ArrayList();

    /** @link aggregation */
    /*#Request lnkRequest;*/
    
    public void addRequest(Request request) {
        requestList.add(request);
    }
    
    public Collection getMatrix() {
        
        ArrayList clone;
        HashMap unitMap = new HashMap();
        
        synchronized(this) {
            clone = (ArrayList)requestList.clone();
        }
        
        Iterator it = clone.iterator();
        while(it.hasNext()) {
            Request request = (Request)it.next();
            if(!unitMap.containsKey(request.getPath())) {
                unitMap.put(request.getPath(), 
                new Unit(request.getPath(), request.getTime()));
            }else {
                Unit unit = (Unit)unitMap.get(request.getPath());
                unit.addRequest(request.getTime());
            }
        }
        
        return unitMap.values();
        
    }
            
     
            

}