<resultMap id="BaseResultMap" type="com.elim.learn.mybatis.model.SysWfProcess">

   <id column="id" jdbcType="INTEGER" property="id" />

   <result column="template_id" jdbcType="INTEGER" property="templateId" />

   <result column="creator" jdbcType="INTEGER" property="creator" />

   <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />

   <collection property="nodes" column="id"

    ofType="com.elim.learn.mybatis.model.SysWfNode" select="selectNodes" fetchType="lazy"/>

  </resultMap>

  <resultMap id="SysWfNodeResult" type="com.elim.learn.mybatis.model.SysWfNode">

   <id column="id" jdbcType="INTEGER" property="nodeId" />

   <result column="process_id" jdbcType="INTEGER" property="processId" />

   <result column="node_code" jdbcType="VARCHAR" property="nodeCode" />

   <result column="node_name" jdbcType="VARCHAR" property="nodeName" />

  </resultMap>

  <select id="selectByPrimaryKey" parameterType="java.lang.Integer"

   resultMap="BaseResultMap">

   select

   <include refid="Base_Column_List" />

   from sys_wf_process

   where id = #{id,jdbcType=INTEGER}

  </select>

  <select id="selectNodes"

   resultMap="SysWfNodeResult">

   select id, process_id, node_code, node_name from sys_wf_node

   where process_id=#{id}

  </select>

   <setting name="lazyLoadingEnabled" value="true"/>

 private Object createResultObject(ResultSetWrapper rsw, ResultMap resultMap, ResultLoaderMap lazyLoader, String columnPrefix) throws SQLException {

  final List<Class<?>> constructorArgTypes = new ArrayList<Class<?>>();

  final List<Object> constructorArgs = new ArrayList<Object>();

  final Object resultObject = createResultObject(rsw, resultMap, constructorArgTypes, constructorArgs, columnPrefix);

  if (resultObject != null && !typeHandlerRegistry.hasTypeHandler(resultMap.getType())) {

   final List<ResultMapping> propertyMappings = resultMap.getPropertyResultMappings();

   for (ResultMapping propertyMapping : propertyMappings) {

    // issue gcode #109 && issue #149

    if (propertyMapping.getNestedQueryId() != null && propertyMapping.isLazy()) {

     return configuration.getProxyFactory().createProxy(resultObject, lazyLoader, configuration, objectFactory, constructorArgTypes, constructorArgs);

    }

   }

  }

  return resultObject;

 }

   <setting name="proxyFactory" value="CGLIB"/>

 @Test

  public void testLazyLoad1() {

   SysWfProcessMapper mapper = this.session.getMapper(SysWfProcessMapper.class);

   SysWfProcess process = mapper.selectByPrimaryKey(1);

   System.out.println(process.getClass());

  }
 

2016-12-23 15:43:21,131 DEBUG [main] (BaseJdbcLogger.java:145) - ==> Preparing: select id, template_id, creator, create_time from sys_wf_process where id = ?

2016-12-23 15:43:21,156 DEBUG [main] (BaseJdbcLogger.java:145) - ==> Parameters: 1(Integer)

2016-12-23 15:43:21,269 DEBUG [main] (BaseJdbcLogger.java:145) - <==   Total: 1

class com.elim.learn.mybatis.model.SysWfProcess_$$_jvstc25_0

2016-12-23 15:43:21,271 DEBUG [main] (BaseJdbcLogger.java:145) - ==> Preparing: select id, process_id, node_code, node_name from sys_wf_node where process_id=?

2016-12-23 15:43:21,272 DEBUG [main] (BaseJdbcLogger.java:145) - ==> Parameters: 1(Integer)

2016-12-23 15:43:21,274 DEBUG [main] (BaseJdbcLogger.java:145) - <==   Total: 2

 

  <setting name="aggressiveLazyLoading" value="fasle"/>

   <setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString" />

@Override

  public Object invoke(Object enhanced, Method method, Method methodProxy, Object[] args) throws Throwable {

   final String methodName = method.getName();

   try {

    synchronized (lazyLoader) {

     if (WRITE_REPLACE_METHOD.equals(methodName)) {

      Object original = null;

      if (constructorArgTypes.isEmpty()) {

       original = objectFactory.create(type);

      } else {

       original = objectFactory.create(type, constructorArgTypes, constructorArgs);

      }

      PropertyCopier.copyBeanProperties(type, enhanced, original);

      if (lazyLoader.size() > 0) {

       return new JavassistSerialStateHolder(original, lazyLoader.getProperties(), objectFactory, constructorArgTypes, constructorArgs);

      } else {

       return original;

      }

     } else {

      if (lazyLoader.size() > 0 && !FINALIZE_METHOD.equals(methodName)) {

       if (aggressive || lazyLoadTriggerMethods.contains(methodName)) {

        lazyLoader.loadAll();

       } else if (PropertyNamer.isProperty(methodName)) {

        final String property = PropertyNamer.methodToProperty(methodName);

        if (lazyLoader.hasLoader(property)) {

         lazyLoader.load(property);

        }

       }

      }

     }

    }

    return methodProxy.invoke(enhanced, args);

   } catch (Throwable t) {

    throw ExceptionUtil.unwrapThrowable(t);

   }

  }

 }