package com.vci.client.uif.engine.common;

import java.util.HashMap;
import java.util.Map;

import com.vci.client.common.objects.UserObject;
import com.vci.client.framework.delegate.RightManagementClientDelegate;
import com.vci.client.ui.exception.VCIException;

public class UserObjectMap {
	private static UserObjectMap _instance = null;
	public static UserObjectMap getInstance(){
		if(_instance == null){
			synchronized (UserObjectMap.class) {
				if(_instance == null){
					_instance = new UserObjectMap();
				}
			}
		}
		return _instance;
	}
	
	private Map<String, UserObject> userMap = new HashMap<String, UserObject>();
	
	public UserObject getUserObjectByName(String userName){
		UserObject userObject = null;
		
		if(userMap.containsKey(userName)){
			userObject = userMap.get(userName);
		} else {
			userObject = getUserObjectFromDB(userName);
			if(userObject != null){
				userMap.put(userName, userObject);
			}
		}

		return userObject;
	}
	
	private UserObject getUserObjectFromDB(String userName){
		UserObject userObj = null;
		try {
			userObj = new RightManagementClientDelegate().getUserObjectByUserName(userName);
		} catch (VCIException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return userObj;
	}
}