Spring 集成iBATIS

Spring 集成iBATIS:

1. ORM 框架有两种

      a. 一种完全依赖它生成SQL代码的框架，开发速度快， 但有时候生成的SQL代码不够高效(Hibernate)
      b. 一种是手动编写SQL代码，确保查询到正确的字段来创建相应的JavaBean实例(iBaTIS)

2. Spring 集成iBATIS:

   a. 在application.xml 文件种
       

       <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlClientFactoryBean">
          <property name="configureLocation" value="sqlMapConfig.xml"/>
          <property name="dataSource" ref local="dataSource"/>
       </bean>

       <bean id="customerDao" class="com.test.customerDAOSqlMapClient">
          <property name="sqlMapClient" ref="sqlMapClient"/>
       <bean/>
       

   b. 创建sqlMapConfig.xml文件
     

      .....头
        <sqlMapConfig>
            <sqlMap resource="Customer.xml"/>
        </sqlMapConfig>       
   
      -----尾
       

   c. 创建Customer.xml
     

      <sqlMap>
         <typeAlias type="com.test.Customer" alias="customer"/>
         <resultMap class="customer" id="result">
              <result property="id" column="id"/>
              <result property="firstName" column="First_Name"/>
              <result property="lastName" column="Last_Name"/>
         </resultMap>
         <select id="getCustomerById" resultMap="result" parameterClass="long">
              select * from T_Customer where Id=#value#
         </select> 
         //传递MAP 当你只是更新一个有大量例的表的几个字段,最好用MAP
         <select id="getCustomerByLastNameAndLastLoginMap" resultMap="result" parameterClass="map">
              select * from T_Customer where Last_Name like #lastName# and Last_Login =#lastLogin#
         </select>
         //传递对象 当你更新表中的大部分或全部例时,最好使用对象
         <select id="getCustomerByLastNameAndLastLoginDO" resultMap="result" parameterClass="Customer">
              select * from T_Customer where Last_Name like #lastName# and Last_Login =#lastLogin#
         </select>

         <update id="updateCustomerLastNameDO" parameterClass="Customer">
              update T_Customer set Last_Name=#lastName# where Id=#Id#
         </update>
         insert 
         delete
      </sqlMap>
      

3. Java 代码， 继承SqlMapClientDaoSupport
     

      public class customerDao extends SqlMapClientDaoSupport{

         public Customer getById(long Id){
            return (Customer)this.getSqlMapClientTemplate().queryForObject("getCustomerById",Id);
         }

         public List<Customer> getByLastNameAndLastLoginMap(String lastName,Date lastLogin){
            Map<String,Object> parms=new HashMap<String Object>();
            parms.put("lastName",lastName);
            parms.put("lastLogin",lastLogin);
            return this.getSqlMapClientTemplate.queryForObject("getCustomerByLastNameAndLastLoginMap",parms);
         }
         public List<Customer> getByLastNameAndLastLoginDO(String lastName,Date lastLogin){
            Customer customer=new Customer();
            customer.setLastName(lastName);
            customer.setLastLogin(lastLogin);
            return this.getSqlMapClientTemplate.queryForObject("getCustomerByLastNameAndLastLoginDO",customer);
         }
         public void update(Long id,String lastName){
            Customer customer=new Customer();
            customer.setLastName(lastName);
            customer.setId(id);
            return this.getSqlMapClientTemplate.queryForObject("updateCustomerLastNameDO",customer);
         }
      }