[size=large]ibatis一对多关系配置文件写法[/size]
上节已经写了ibatis的相关配置文件和spring的集成，此处不多加赘述，主要看看配置文件该如何写。
1、新建两个类，一个Account包含多个OrderInfo
package ibatis.one.many;import java.util.List;public class Account { private int accountId; private String accountNo; private List orderList; public int getAccountId() { return accountId; } public void setAccountId(int accountId) { this.accountId = accountId; } public String getAccountNo() { return accountNo; } public void setAccountNo(String accountNo) { this.accountNo = accountNo; } public List getOrderList() { return orderList; } public void setOrderList(List orderList) { this.orderList = orderList; }}
package ibatis.one.many;import java.util.List;public class OrderInfo { private int orderId; private int accountId; private String orederName; public int getOrderId() { return orderId; } public void setOrderId(int orderId) { this.orderId = orderId; } public String getOrederName() { return orederName; } public void setOrederName(String orederName) { this.orederName = orederName; } public int getAccountId() { return accountId; } public void setAccountId(int accountId) { this.accountId = accountId; } }
2、account.xml
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN" "http://www.ibatis.com/dtd/sql-map-2.dtd"><sqlMap namespace="account"> <typeAlias alias="Account" type="ibatis.one.many.Account" /> <typeAlias alias="OrderInfo" type="ibatis.one.many.OrderInfo" /> <resultMap class="Account" id="accountResultMap"> <result property="accountId" column="accountId" /> <result property="accountNo" column="accountNo" /> <result property="orderList" column="accountId" select="getOrdersByAccountId" /> </resultMap> <resultMap class="OrderInfo" id="orderResultMap"> <result property="orderId" column="orderId" /> <result property="orederName" column="orederName" /> <result property="accountId" column="accountId" /> </resultMap> <select id="getAccounts" resultMap="accountResultMap"> <![CDATA[select * from Account]]> </select> <select id="getOrdersByAccountId" resultMap="orderResultMap"> <![CDATA[ select o.* from Account a,orderinfo o where o.accountId = a.accountId and a.accountId=#value# ]]> </select></sqlMap>
3、测试类中main()中的内容：
try { ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); SqlMapClient sqlMap=(SqlMapClient) ctx.getBean("sqlMapClient"); sqlMap.flushDataCache(); System.out.println("sqlMap=="+sqlMap); List accountList = sqlMap.queryForList("getAccounts",1); System.out.println("accountList=="+accountList.size()); for(int i=0;i<accountList.size();i++){ Account account = (Account) accountList.get(i); System.out.println(account.getAccountId()+"......."+account.getAccountNo()); List orderList = account.getOrderList(); System.out.println("orderList==="+orderList); for(int j=0;j<orderList.size();j++){ OrderInfo orderInfo = (OrderInfo) orderList.get(j); System.out.println("orderInfo=="+orderInfo); System.out.println(orderInfo.getOrderId()+"....."+orderInfo.getOrederName()); } }// Account account=(Account)sqlMap.queryForObject("getAccountInfoList", 1); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }
