import java.util.*;
import MDMSupport.ReceivedMDMessage;

class newMessageRepository extends Hashtable implements Runnable{
  private static newMessageRepository instance = new newMessageRepository();
  public static newMessageRepository getInstance(){
    return instance;
  }
  private newMessageRepository() {
//hash cleaner will remove the messages that are older than a specific time frame
    Thread hashCleaner = new Thread(this);
  }
  public void addElement(Object key, ReceivedMDMessage msg){
//if the element already exists just insert the new message into the msgContainer
    if(this.containsKey(key)){
      newMessageRepositoryElement element = (newMessageRepositoryElement)this.get(key);
      element.addElement(msg);
    }
    else{
//if the element doesnot exist add a new element
      this.put(key, new newMessageRepositoryElement(msg));
    }
  }
  public Vector getAndRemove(Object key){
    newMessageRepositoryElement element = (newMessageRepositoryElement)this.remove(key);
    return element.msgContainer;    
  }
  public void run(){
  }
}