一. 背景
由于架构支持了一对一,以及一对多的查询,对查询返回结果进行了处理。返回的结果都是dto,而不是数据库实体映射类vo。不过实体新增,修改,软删操作都是传vo。
二. 实例
这里有t_test_a,t_test_b两张表,每张表都会有与数据库映射的实体类TestAVo和TestBVo,以及查询返回结果TestADto和TestBDto。
CREATE TABLE `t_test_a` (
`id` bigint(20) NOT NULL COMMENT '主键',
`c_id` bigint(20) DEFAULT NULL COMMENT 'c主键',
`b_id` bigint(20) DEFAULT NULL COMMENT 'b主键',
`a_id` bigint(20) DEFAULT NULL COMMENT 'a主键',
`crt_tm` datetime DEFAULT NULL COMMENT '创建时间',
`crt_by` varchar(32) DEFAULT NULL COMMENT '创建人',
`upd_tm` datetime DEFAULT NULL COMMENT '修改时间',
`upd_by` varchar(32) DEFAULT NULL COMMENT '修改人',
`edit_flag` tinyint(4) DEFAULT '0' COMMENT '逻辑删除',
`tnt_id` bigint(20) DEFAULT NULL COMMENT '租户主键',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='测试A';
CREATE TABLE `t_test_b` (
`id` bigint(20) NOT NULL COMMENT '主键',
`a_id` bigint(20) DEFAULT NULL COMMENT 'a主键',
`c_id` bigint(20) DEFAULT NULL COMMENT 'c主键',
`crt_tm` datetime DEFAULT NULL COMMENT '创建时间',
`crt_by` varchar(32) DEFAULT NULL COMMENT '创建人',
`upd_tm` datetime DEFAULT NULL COMMENT '修改时间',
`upd_by` varchar(32) DEFAULT NULL COMMENT '修改人',
`edit_flag` tinyint(4) DEFAULT '0' COMMENT '逻辑删除',
`tnt_id` bigint(20) DEFAULT NULL COMMENT '租户主键',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='测试B';
/**
* <p>
* 测试A
* </p>
*
* @author yuyi ([email protected])
* @since 2019-03-20
*/
@Data
@EqualsAndHashCode(callSuper = true)
@Accessors(chain = true)
@TableName("t_test_a")
public class TestAVo extends BaseVo {
private static final long serialVersionUID = 1L;
@Note("主键")
private Long id;
@Note("c主键")
private Long cId;
@Note("b主键")
private Long bId;
@Note("a主键")
private Long aId;
}
/**
* <p>
* 测试B
* </p>
*
* @author yuyi ([email protected])
* @since 2019-03-20
*/
@Data
@EqualsAndHashCode(callSuper = true)
@Accessors(chain = true)
@TableName("t_test_b")
public class TestBVo extends BaseVo {
private static final long serialVersionUID = 1L;
@Note("主键")
private Long id;
@Note("a主键")
private Long aId;
@Note("c主键")
private Long cId;
}
/**
* <p>
* 测试A
* </p>
*
* @author yuyi ([email protected])
*/
@Data
public class TestADto implements Serializable {
private static final long serialVersionUID = 1L;
protected TestAVo testAVo2;
protected TestAVo testAVo;
protected TestBVo testBVo;
protected TestCVo testCVo;
protected TestDVo testDVo;
protected List<TestBDto> testBList;
protected List<TestCDto> testCList;
}
/**
* <p>
* 测试B
* </p>
*
* @author yuyi ([email protected])
* @since 2019-03-20
*/
@Data
public class TestBDto implements Serializable {
private static final long serialVersionUID = 1L;
protected TestBVo testBVo;
protected TestCVo testCVo;
}
这样便于连表查询返回对象