package com.demo.action;

import java.util.ArrayList;
import java.util.List;

import net.sf.json.JSONArray;

import com.demo.bean.TreeBean;

/**
 * 
 * @author tanfei
 * @date Mar 4, 2013 9:49:19 AM
 */
public class TreeAction {
	
	/**
	 * 创建树及其初始化数据
	 * @return
	 */
	public static String create()
	{
		
		//模拟初始化数据
		List<TreeBean> list = new ArrayList<TreeBean>();
		
		/********以下数据在正式应用中应该从数据库获取，此刻为了显示而模拟数据************/
		TreeBean tree = new TreeBean();
		tree.setTreeId("1");
		tree.setName("中国");
		tree.setIsParent(true);
		list.add(tree);
		
		JSONArray json = JSONArray.fromObject(list);
		
		return json.toString();
	}
	
	/**
	 * 
	 * @param parentId 父结点
	 * @return 子节点json数据
	 */
	public static String fetchAsyTreeData(String parentId)
	{
		List<TreeBean> list = new ArrayList<TreeBean>();
		
		/********以下数据在正式应用中应该从数据库获取，此刻为了显示而模拟了几条数据************/
		switch(Integer.valueOf(parentId))
		{
			case 1:
				{
					TreeBean tree = new TreeBean();
					tree.setTreeId("1001");
					tree.setName("重庆直辖市");
					tree.setParentId("1");
					tree.setIsParent(true);
					
					TreeBean tree2 = new TreeBean();
					tree2.setTreeId("1002");
					tree2.setName("江苏省");
					tree2.setParentId("1");
					tree2.setIsParent(true);
					
					list.add(tree);
					list.add(tree2);
					break;
				}
			case 1001:
				{
					TreeBean tree = new TreeBean();
					tree.setTreeId("1001001");
					tree.setName("江北区");
					tree.setParentId("1001");
					tree.setIsParent(false);
					
					TreeBean tree2 = new TreeBean();
					tree2.setTreeId("1001002");
					tree2.setName("渝中区");
					tree2.setParentId("1001");
					tree2.setIsParent(false);
					
					TreeBean tree3 = new TreeBean();
					tree3.setTreeId("1001003");
					tree3.setName("渝北区");
					tree3.setParentId("1001");
					tree3.setIsParent(false);
					
					TreeBean tree4 = new TreeBean();
					tree4.setTreeId("1001004");
					tree4.setName("沙坪坝区");
					tree4.setParentId("1001");
					tree4.setIsParent(false);
					
					list.add(tree);
					list.add(tree2);
					list.add(tree3);
					list.add(tree4);
					break;
				}
			case 1002:
			{
				TreeBean tree = new TreeBean();
				tree.setTreeId("1002001");
				tree.setName("南京市");
				tree.setParentId("1002");
				tree.setIsParent(false);
				
				list.add(tree);
				break;
			}	
		}
		
		JSONArray json = JSONArray.fromObject(list);
		
		return json.toString();
	}
	
	
	/**
	 * 主函数
	 * @param args
	 */
	public static void main(String[] args) {
		
		System.out.println(TreeAction.create());
		
		System.out.println(TreeAction.fetchAsyTreeData("1"));
	}
}