cachedbdmap.java

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/**    
  * Copyright (C) 2006, Laboratorio di Valutazione delle Prestazioni - Politecnico di Milano

  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.

  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.

  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
  
package jmt.gui.common.util;

import java.util.Map;

/**
 * Created by IntelliJ IDEA.
 * User: orsotronIII
 * Date: 28-giu-2005
 * Time: 17.05.47
 * To change this template use Options | File Templates.
 */
public class CachedBDMap extends BDMapImpl{

    //currently stored row and column
    private Map mruXMap, mruYMap;

    private Object mruXYMatch;

    //currently stored keys
    private Object mruXKey, mruYKey;


    public Object get(Object xKey, Object yKey){
/*        System.out.println("yKey = "+yKey+"; mruYKey ="+mruYKey+" yMap="+mruYMap);
        System.out.println("xKey = "+xKey+"; mruXKey ="+mruXKey+" xMap="+mruXMap);
*/        if(xKey!=null && yKey!=null){
            //if both x and y keys match given keys
            if(xKey.equals(mruXKey) && yKey.equals(mruYKey)){
                return mruXYMatch;
            }else if(xKey.equals(mruXKey)){
//                System.out.println("xMatch");
                //if only x or y keys match current key, return matching found inside proper
                //map.
                return mruXMap.get(yKey);
            }else if(yKey.equals(mruYKey)){
//                System.out.println("yMatch");
                return mruYMap.get(xKey);
            }else{
//                System.out.println("no match");
                //no matching found. Refresh all matchings.
                mruXKey = xKey;
                mruYKey = yKey;
                mruXMap = super.get(mruXKey, BDMap.X);
                mruYMap = super.get(mruYKey, BDMap.Y);
                mruXYMatch = super.get(mruXKey, mruYKey);
                return mruXYMatch;
            }
        }else{
            return super.get(xKey, yKey);
        }
    }

    public Map get(Object key, int coordName){
        if(key!=null){
            switch(coordName){
                case BDMap.X:{
                    if(key.equals(mruXKey)) return mruXMap;
                    else{
                        mruXKey = key;
                        mruXMap = super.get(mruXKey, coordName);
                        mruXYMatch = super.get(mruXKey, mruYKey);
                        return mruXMap;
                    }
                }
                case BDMap.Y:{
                    if(key.equals(mruYKey)) return mruYMap;
                    else{
                        mruYKey = key;
                        mruYMap = super.get(mruYKey, coordName);
                        mruXYMatch = super.get(mruXKey, mruYKey);
                        return mruYMap;
                    }
                }
            }
        }
        return super.get(key, coordName);
    }

    public void put(Object xKey, Object yKey, Object value){
        if(xKey!=null && yKey!=null){
            if(xKey.equals(mruXKey)&&yKey.equals(mruYKey)){
                mruXYMatch = value;
            }
            if(xKey.equals(mruXKey)){
                mruXMap.put(yKey, value);
            }
            if(yKey.equals(mruYKey)){
                mruYMap.put(xKey, value);
            }
        }
        super.put(xKey, yKey, value);
    }

    public void put(Object key, int coordName, Map newMap){
        if(key!=null){
            switch(coordName){
                case BDMap.X:{
                    if(key.equals(mruXKey)){
                        mruXMap = newMap;
                    }
                }
                case BDMap.Y:{
                    if(key.equals(mruYKey)){
                        mruYMap = newMap;
                    }
                }
            }
        }
        super.put(key, coordName, newMap);
    }


}