treeutil.java

管理公司合同

/*
 * Created on 2006-7-11 16:45:29
 *
 * By SinoBest
 * Copyright hnisi.com.cn, 2005-2006, All rights reserved.
 */

package cn.com.juneng.system.common.taglib.tree;

import java.util.HashMap;

import cn.com.juneng.system.common.taglib.tree.impl.SysMenuTreeService;
import cn.com.juneng.system.common.taglib.tree.impl.SysOrgTreeService;

/**
 * @author yehailong
 * 
 */

public class TreeUtil {
	private static HashMap treeMap = null;

	// 树组件实现的注册
	static {
		treeMap = new HashMap();
		treeMap.put("SYS_ORG", new Object[] { "组织机构", SysOrgTreeService.class });
		treeMap.put("SYS_MENU", new Object[] { "系统菜单", SysMenuTreeService.class });
	}

	/**
	 * 返回对应的树的实现
	 * 
	 * @param treeType
	 *            树类型
	 * @return 对应的树实现
	 * @throws Exception
	 */
	public static ITreeService getTreeService(String treeType, Object[] params)
			throws Exception {
		if (treeType == null)
			throw new Exception("treeType不能为空！");
		Object[] temp = (Object[]) treeMap.get(treeType);
		if (temp == null)
			throw new Exception("对应treeType:" + treeType + "未在TreeUtil中定义！");

		Class treeClass = (Class) temp[1];
		ITreeService treeService = getTreeService(treeClass, params);

		return treeService;
	}

	public static ITreeService getTreeService(String treeType) throws Exception {
		return getTreeService(treeType, null);
	}

	private static ITreeService getTreeService(Class treeClass, Object[] params)
			throws Exception {
		// return treeClass.
		if (params == null) {
			return (ITreeService) treeClass.newInstance();
		} else {
			Class[] paramsClass = new Class[params.length];
			for (int i = 0; i < params.length; i++) {
				paramsClass[i] = params[i].getClass();
			}
			return (ITreeService) treeClass.getConstructor(paramsClass)
					.newInstance(params);
		}
	}

	/**
	 * 返回对应的树的名称
	 * 
	 * @param treeType
	 *            树类型
	 * @return 对应的树名
	 * @throws Exception
	 */
	public static String getTreeName(String treeType) throws Exception {
		if (treeType == null)
			throw new Exception("treeType不能为空！");
		Object[] temp = (Object[]) treeMap.get(treeType);
		if (temp == null)
			throw new Exception("对应treeType:" + treeType + "未在TreeUtil中定义！");

		String treeName = (String) temp[0];

		return treeName;
	}
}