zTree实现地市县三级级联DAO接口实现

ProvinceDaoImpl.java：

/**

 * @Title:ProvinceDaoImpl.java

 * @Package:com.gwtjs.dao.impl

 * @Description:省份地市县级三级级联DAO接口实现

 * @author:Youhaidong(游海东)

 * @date:2014-5-10 下午10:40:35

 * @version V1.0

 */

package com.gwtjs.dao.impl;

import java.util.ArrayList;

import java.util.List;

import org.apache.commons.lang.StringUtils;

import org.hibernate.SQLQuery;

import org.springframework.stereotype.Repository;

import com.gwtjs.dao.ProvinceDao;

import com.gwtjs.model.Province;

/**

 * 类功能说明

 * 类改动者 改动日期

 * 改动说明

 * <p>Title:ProvinceDaoImpl.java</p>

 * <p>Description:游海东个人开发</p>

 * <p>Copyright:Copyright(c)2013</p>

 * @author:游海东

 * @date:2014-5-10 下午10:40:35

 * @version V1.0

 */

@Repository(value = "provinceDao")

public class ProvinceDaoImpl extends GenericDaoImpl<Province, Long> implements ProvinceDao

{

	/**

	 *

	 * @Title:findArea

	 * @Description:

	 * @param:@param provinceCode 省份编码

	 * @param:@param cityCode     地市编码

	 * @param:@param countyCode   县级编码

	 * @param:@return

	 * @return:List<Province>

	 * @throws

	 */

	@SuppressWarnings("unchecked")

	@Override

	public List<Province> findArea(String provinceCode, String cityCode,String countyCode)

	{

		List<Province> list = new ArrayList<Province>();

		StringBuilder sb = new StringBuilder();

		sb.append("SELECT t.`province_name`,");

		sb.append("t.`city_name`,");

		sb.append("t.`county_name` ");

		sb.append("FROM t_area_tab t ");

		sb.append("WHERE 1=1 ");

		//推断省份编码不为空

		if(StringUtils.isNotBlank(provinceCode))

		{

			sb.append("AND t.`province_code` = '").append(provinceCode).append("' ");

		}

		//推断地市编码不为空

		if(StringUtils.isNotBlank(cityCode))

		{

			sb.append("AND t.`city_code` = '").append(cityCode).append("' ");

		}

		//推断县级编码不为空

		if(StringUtils.isNotBlank(countyCode))

		{

			sb.append("AND t.`county_code` = '").append(countyCode).append("' ");

		}

		SQLQuery q = getSession().createSQLQuery(sb.toString());

		System.out.println("三级级联SQL语句：" + sb.toString());

		List<Object[]> items = q.list();

		if(null != items && items.size() > 0)

		{

			Province province = null;

			for(Object[] obj:items)

			{

				province = new Province();

				/**

				 * 省份名称

				 */

				province.setProvinceName(null == obj[0]?"":obj[0].toString());

				/**

				 * 地市名称

				 */

				province.setProvinceName(null == obj[0]?"":obj[0].toString());

				/**

				 * 县级名称

				 */

				province.setProvinceName(null == obj[0]?"":obj[0].toString());

				list.add(province);

			}

		}

		return list;

	}

}