mybatis mapper 설명

call.java

//xml에 설정한 statement가 호출
          session.select("com.tistory.devyongsik.mapper.DualMapper.selectAll", new ResultHandler() {
                    
                     public void handleResult(ResultContext arg0) {
                                System.out.println(arg0.getResultObject());
                     }
           });

          //mapper interface의 selectAll2 메서드가 호출
          session.select("com.tistory.devyongsik.mapper.DualMapper.selectAll2", new ResultHandler() {
                    
                     public void handleResult(ResultContext arg0) {
                                System.out.println(arg0.getResultObject());
                     }
           });

         //mapper interface의 selectAll2 메서드 직접 호출
         session.getMapper(DualMapper.class).selectAll2(new ResultHandler() {
                   public void handleResult(ResultContext context) {
                         System.out.println(context.getResultObject());
                   }
         });

Dual.java

package com.tistory.devyongsik.domain;
 
/**
 * @author need4spd, need4spd@11st.co.kr, 2012. 10. 11.
 *
 */
public class Dual {
           private String r;
 
           public String getR() {
                     return r;
           }
 
           public void setR(String r) {
                     this.r = r;
           }
 
           @Override
           public String toString() {
                     return "Dual [r=" + r + "]";
           }
          
          
}

DualMapper.java

package com.tistory.devyongsik.mapper;
 
import org.apache.ibatis.annotations.ResultMap;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.session.ResultHandler;
 
/**
 * @author need4spd, need4spd@11st.co.kr, 2012. 10. 11.
 *
 */
public interface DualMapper {
          
                     @Select("select 2 as keyword from dual")
                     @ResultMap(value="dualResultMap")
                     public void selectAll2(ResultHandler handler);
}

DualMapper.xml

<!--?xml version="1.0" encoding="UTF-8" ?-->

 
<mapper namespace="com.tistory.devyongsik.mapper.DualMapper">
 
             <resultmap id="dualResultMap" type="DualDomain">
                           <result column="keyword" property="r" jdbctype="VARCHAR">
                          
             </result></resultmap>
 
 
             <select id="selectAll" resultmap="dualResultMap">
                            select 1 as keyword from dual
             </select>
 
</mapper>

mapper_use_interface.java

session.getMapper(Mapper.class).selectAll(new ResultHandler() {
 public void handleResult(ResultContext context) {
    //do something..
    System.out.println(context);
 }
});

mapper_use_xml.java

SqlSesssion session = sqlSessionFactory.openSession();
session.select("selectALL", new ResultHandler() {
 public void handleResult(ResultContext context) {
    //do something..
    System.out.println(context);
 }
});