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!53 添加自动映射支持集合，以应对一对多、多对多

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Merge pull request !53 from 王帅/main
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Michael Yang 2023-06-08 02:55:59 +00:00 committed by Gitee
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98
docs/zh/base/field-query.md
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@ -2,7 +2,7 @@
在很多场景下，我们可能会用到 `一对多`、`一对一`、`多对一`、`多对多`等场景的关联查询，MyBatis-Flex 内置了相关的方法，用于支持此类场景。
## 代码示例（多对多）
## 代码示例（Field Query）
以下是文章的示例，一篇文章可能归属于多个分类，一个类可以有多篇文章，需要用到中间表 `article_category_mapping`。
@ -105,3 +105,99 @@ List<Article> articles = mapper.selectListByQuery(query
通过以上内容看出，`Article` 的任何属性，都是可以通过传入 `FieldQueryBuilder` 来构建 `QueryWrapper` 进行再次查询，
这些不仅仅只适用于 `一对多`、`一对一`、`多对一`、`多对多`等场景。任何 `Article` 对象里的属性，需要二次查询赋值的，都是可以通过这种方式进行。
## 结果映射
您也可以继续使用联表查询，如果是原生 MyBatis 的话，可以使用 `<resultMap>` 标签来构建结果映射，在 MyBatis-Flex 中提供了自动结果映射功能，这样您就可以只关注于 SQL 语句的构建。
## 代码示例（Join Query）
这里以用户和角色的 `多对多` 关系作为例子，首先有用户表和角色表，分别对应着用户类和角色类：
```java
@Table("sys_user")
public class User {
@Id
private Integer userId;
private String userName;
}
@Table("sys_role")
public class Role {
@Id
private Integer roleId;
private String roleKey;
private String roleName;
}
```
现在需要查询所有用户，以及每个用户对应的角色信息，并通过 UserVO 对象返回：
```java
public class UserVO {
private String userId;
private String userName;
private List<Role> roleList;
}
```
这个操作只需要联表查询即可完成，对于联表查询的结果映射，MyBatis-Flex 会自动帮您完成：
```java
@SpringBootTest
class UserMapperTest {
@Autowired
private UserMapper userMapper;
@Test
void testSelectList() {
QueryWrapper queryWrapper = QueryWrapper.create()
.select(USER.USER_ID, USER.USER_NAME, ROLE.ALL_COLUMNS)
.from(USER.as("u"))
.leftJoin(USER_ROLE).as("ur").on(USER_ROLE.USER_ID.eq(USER.USER_ID))
.leftJoin(ROLE).as("r").on(USER_ROLE.ROLE_ID.eq(ROLE.ROLE_ID));
List<UserVO> userVOS = userMapper.selectListByQueryAs(queryWrapper, UserVO.class);
userVOS.forEach(System.err::println);
}
}
```
构建的联表查询 SQL 语句为：
```sql
SELECT `u`.`user_id`,
`u`.`user_name`,
`r`.*
FROM `sys_user` AS `u`
LEFT JOIN `sys_user_role` AS `ur` ON `ur`.`user_id` = `u`.`user_id`
LEFT JOIN `sys_role` AS `r` ON `ur`.`role_id` = `r`.`role_id`;
```
最终自动映射的结果为：
```text
UserVO{userId='1', userName='admin', roleList=[Role{roleId=1, roleKey='admin', roleName='超级管理员'}]}
UserVO{userId='2', userName='ry', roleList=[Role{roleId=2, roleKey='common', roleName='普通角色'}]}
UserVO{userId='3', userName='test', roleList=[Role{roleId=1, roleKey='admin', roleName='超级管理员'}, Role{roleId=2, roleKey='common', roleName='普通角色'}]}
```
## 特别注意！！！
使用 `join` 联表查询的时候，只能使用 `selectListXxx` 方法查询 List 数据，不能使用 `selectOneXxx` 方法查询单个数据。
```java
default <R> R selectOneByQueryAs(QueryWrapper queryWrapper, Class<R> asType) {
List<R> entities = selectListByQueryAs(queryWrapper.limit(1), asType);
return (entities == null || entities.isEmpty()) ? null : entities.get(0);
}
```
因为这个 `selectOneXxx` 方法都是调用的对应的 `selectListXxx` 方法，其中添加了 `queryWrapper.limit(1)` 约束，将数据限制在了一条，而联表查询数据有可能是多条的，这样自动映射就会出现数据丢失。

55
mybatis-flex-core/src/main/java/com/mybatisflex/core/mybatis/FlexConfiguration.java
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@ -1,4 +1,4 @@
/**
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
@ -27,7 +27,6 @@ import com.mybatisflex.core.row.RowMapper;
import com.mybatisflex.core.table.EntityWrapperFactory;
import com.mybatisflex.core.table.TableInfo;
import com.mybatisflex.core.table.TableInfoFactory;
import com.mybatisflex.core.util.CollectionUtil;
import com.mybatisflex.core.util.StringUtil;
import org.apache.ibatis.executor.CachingExecutor;
import org.apache.ibatis.executor.Executor;
@ -36,15 +35,15 @@ import org.apache.ibatis.executor.keygen.NoKeyGenerator;
import org.apache.ibatis.executor.keygen.SelectKeyGenerator;
import org.apache.ibatis.executor.parameter.ParameterHandler;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ResultMap;
import org.apache.ibatis.mapping.*;
import org.apache.ibatis.session.*;
import org.apache.ibatis.transaction.Transaction;
import org.apache.ibatis.util.MapUtil;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
@ -178,13 +177,39 @@ public class FlexConfiguration extends Configuration {
String resultMapId = tableInfo.getEntityClass().getName();
ResultMap resultMap;
/*ResultMap resultMap;
if (hasResultMap(resultMapId)) {
resultMap = getResultMap(resultMapId);
} else {
resultMap = tableInfo.buildResultMap(this);
this.addResultMap(resultMap);
}*/
// 变量名与属性名区分开
List<ResultMap> resultMapList;
if (hasResultMap(resultMapId)) {
resultMapList = new ArrayList<>();
fillResultMapList(resultMapId, resultMapList);
} else {
resultMapList = tableInfo.buildResultMapList(this);
for (ResultMap resultMap : resultMapList) {
if (!hasResultMap(resultMap.getId())) {
addResultMap(resultMap);
}
}
}
/*
* 这里解释一下为什么要反转这个集合：
*
* MyBatis 在解析 ResultMaps 的时候，是按照顺序一个一个进行解析的，对于有嵌套
* 的 ResultMap 对象，也就是 nestResultMap 需要放在靠前的位置，首先解析。
*
* 而我们进行递归 buildResultMapList 也好，fillResultMapList 也好，都是
* 非嵌套 ResultMap 在集合最开始的位置，所以要反转一下集合，将 hasNestedResultMaps
* 的 ResultMap 对象放到集合的最前面。
*/
Collections.reverse(resultMapList);
return new MappedStatement.Builder(ms.getConfiguration(), ms.getId(), ms.getSqlSource(), ms.getSqlCommandType())
.resource(ms.getResource())
@ -198,7 +223,8 @@ public class FlexConfiguration extends Configuration {
.lang(ms.getLang())
.resultOrdered(ms.isResultOrdered())
.resultSets(ms.getResultSets() == null ? null : String.join(",", ms.getResultSets()))
.resultMaps(CollectionUtil.newArrayList(resultMap)) // 替换resultMap
//.resultMaps(CollectionUtil.newArrayList(resultMap)) // 替换resultMap
.resultMaps(resultMapList)
.resultSetType(ms.getResultSetType())
.flushCacheRequired(ms.isFlushCacheRequired())
.useCache(ms.isUseCache())
@ -206,6 +232,19 @@ public class FlexConfiguration extends Configuration {
.build();
}
private void fillResultMapList(String resultMapId, List<ResultMap> resultMapList) {
ResultMap resultMap = this.getResultMap(resultMapId);
resultMapList.add(resultMap);
if (resultMap.hasNestedResultMaps()) {
for (ResultMapping resultMapping : resultMap.getResultMappings()) {
String nestedResultMapId = resultMapping.getNestedResultMapId();
if (nestedResultMapId != null) {
fillResultMapList(nestedResultMapId, resultMapList);
}
}
}
}
/**
* 生成新的、已替换主键生成器的 MappedStatement
*

136
mybatis-flex-core/src/main/java/com/mybatisflex/core/table/TableInfo.java
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@ -1,4 +1,4 @@
/**
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
@ -39,6 +39,7 @@ import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.type.TypeHandler;
import org.apache.ibatis.util.MapUtil;
import java.lang.reflect.Field;
import java.lang.reflect.Proxy;
import java.sql.ResultSet;
import java.sql.SQLException;
@ -96,9 +97,24 @@ public class TableInfo {
private List<UpdateListener> onUpdateListeners;
private List<SetListener> onSetListeners;
/**
* @deprecated 该功能有更好的方式实现，此属性可能会被移除。
*/
@Deprecated
private Map<String, Class<?>> joinTypes;
/**
* 对应 MapperXML 配置文件中 {@code <resultMap>} 标签下的 {@code <association>} 标签。
*/
private Map<String, Class<?>> associationType;
/**
* 对应 MapperXML 配置文件中 {@code <resultMap>} 标签下的 {@code <collection>} 标签。
*/
private Map<Field, Class<?>> collectionType;
private final ReflectorFactory reflectorFactory = new BaseReflectorFactory() {
@Override
public Reflector findForClass(Class<?> type) {
@ -296,6 +312,36 @@ public class TableInfo {
joinTypes.put(fieldName, clazz);
}
public Map<String, Class<?>> getAssociationType() {
return associationType;
}
public void setAssociationType(Map<String, Class<?>> associationType) {
this.associationType = associationType;
}
public void addAssociationType(String fieldName, Class<?> clazz) {
if (associationType == null) {
associationType = new HashMap<>();
}
associationType.put(fieldName, clazz);
}
public Map<Field, Class<?>> getCollectionType() {
return collectionType;
}
public void setCollectionType(Map<Field, Class<?>> collectionType) {
this.collectionType = collectionType;
}
public void addCollectionType(Field field, Class<?> genericClass) {
if (collectionType == null) {
collectionType = new HashMap<>();
}
collectionType.put(field, genericClass);
}
void setColumnInfoList(List<ColumnInfo> columnInfoList) {
this.columnInfoList = columnInfoList;
this.columns = new String[columnInfoList.size()];
@ -660,6 +706,10 @@ public class TableInfo {
.collect(Collectors.toList());
}
/**
* @deprecated 该功能有更好的方式实现，此方法可能会被移除。
*/
@Deprecated
public ResultMap buildResultMap(Configuration configuration) {
String resultMapId = entityClass.getName();
List<ResultMapping> resultMappings = new ArrayList<>();
@ -727,6 +777,90 @@ public class TableInfo {
return new ResultMap.Builder(configuration, resultMapId, entityClass, resultMappings).build();
}
public List<ResultMap> buildResultMapList(Configuration configuration) {
String resultMapId = entityClass.getName();
List<ResultMap> resultMaps = new ArrayList<>();
List<ResultMapping> resultMappings = new ArrayList<>();
// <resultMap> 标签下的 <result> 标签映射
for (ColumnInfo columnInfo : columnInfoList) {
ResultMapping mapping = new ResultMapping.Builder(configuration, columnInfo.property,
columnInfo.column, columnInfo.propertyType)
.jdbcType(columnInfo.getJdbcType())
.typeHandler(columnInfo.buildTypeHandler())
.build();
resultMappings.add(mapping);
//add property mapper for sql: select xxx as property ...
if (!Objects.equals(columnInfo.getColumn(), columnInfo.getProperty())) {
ResultMapping propertyMapping = new ResultMapping.Builder(configuration, columnInfo.property,
columnInfo.property, columnInfo.propertyType)
.jdbcType(columnInfo.getJdbcType())
.typeHandler(columnInfo.buildTypeHandler())
.build();
resultMappings.add(propertyMapping);
}
}
// <resultMap> 标签下的 <id> 标签映射
for (IdInfo idInfo : primaryKeyList) {
ResultMapping mapping = new ResultMapping.Builder(configuration, idInfo.property,
idInfo.column, idInfo.propertyType)
.flags(CollectionUtil.newArrayList(ResultFlag.ID))
.jdbcType(idInfo.getJdbcType())
.typeHandler(idInfo.buildTypeHandler())
.build();
resultMappings.add(mapping);
}
// <resultMap> 标签下的 <association> 标签映射
if (associationType != null) {
associationType.forEach((fieldName, fieldType) -> {
// 获取嵌套类型的信息，也就是 javaType 属性
TableInfo tableInfo = TableInfoFactory.ofEntityClass(fieldType);
// 构建嵌套类型的 ResultMap 对象，也就是 <association> 标签下的内容
// 这里是递归调用，直到嵌套类型里面没有其他嵌套类型或者集合类型为止
List<ResultMap> resultMapList = tableInfo.buildResultMapList(configuration);
// 寻找是否有嵌套 ResultMap 引用
Optional<ResultMap> nestedResultMap = resultMapList.stream()
.filter(e -> fieldType.getName().equals(e.getId()))
.findFirst();
// 处理嵌套类型 ResultMapping 引用
nestedResultMap.ifPresent(resultMap -> resultMappings.add(new ResultMapping.Builder(configuration, fieldName)
.javaType(fieldType)
.nestedResultMapId(resultMap.getId())
.build()));
// 全部添加到 ResultMap 集合当中
resultMaps.addAll(resultMapList);
});
}
// <resultMap> 标签下的 <collection> 标签映射
if (collectionType != null) {
collectionType.forEach((field, genericClass) -> {
// 获取集合泛型类型的信息，也就是 ofType 属性
TableInfo tableInfo = TableInfoFactory.ofEntityClass(genericClass);
// 构建嵌套类型的 ResultMap 对象，也就是 <collection> 标签下的内容
// 这里是递归调用，直到集合类型里面没有其他嵌套类型或者集合类型为止
List<ResultMap> resultMapList = tableInfo.buildResultMapList(configuration);
// 寻找是否有嵌套 ResultMap 引用
Optional<ResultMap> nestedResultMap = resultMapList.stream()
.filter(e -> genericClass.getName().equals(e.getId()))
.findFirst();
// 处理嵌套类型 ResultMapping 引用
nestedResultMap.ifPresent(resultMap -> resultMappings.add(new ResultMapping.Builder(configuration, field.getName())
.javaType(field.getType())
.nestedResultMapId(resultMap.getId())
.build()));
// 全部添加到 ResultMap 集合当中
resultMaps.addAll(resultMapList);
});
}
resultMaps.add(new ResultMap.Builder(configuration, resultMapId, entityClass, resultMappings).build());
return resultMaps;
}
private static boolean existColumn(List<ResultMapping> resultMappings, String name) {
for (ResultMapping resultMapping : resultMappings) {

16
mybatis-flex-core/src/main/java/com/mybatisflex/core/table/TableInfoFactory.java
View File

@ -212,11 +212,19 @@ public class TableInfoFactory {
&& !fieldType.isEnum() // 类型不是枚举
&& !defaultSupportColumnTypes.contains(fieldType) //默认的自动类型不包含该类型
) {
if (!Map.class.isAssignableFrom(fieldType)
&& !Collection.class.isAssignableFrom(fieldType)
&& !fieldType.isArray()) {
tableInfo.addJoinType(field.getName(), fieldType);
// 集合嵌套
if (Collection.class.isAssignableFrom(fieldType)) {
ParameterizedType genericType = (ParameterizedType) field.getGenericType();
Type actualTypeArgument = genericType.getActualTypeArguments()[0];
tableInfo.addCollectionType(field, (Class<?>) actualTypeArgument);
}
// 实体类嵌套
else if (!Map.class.isAssignableFrom(fieldType)
&& !fieldType.isArray()) {
// tableInfo.addJoinType(field.getName(), fieldType);
tableInfo.addAssociationType(field.getName(), fieldType);
}
// 不支持的类型直接跳过
continue;
}

13
mybatis-flex-test/mybatis-flex-spring-boot-test/pom.xml
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@ -45,13 +45,18 @@
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>2.1.214</version>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- <dependency>-->
<!-- <groupId>com.h2database</groupId>-->
<!-- <artifactId>h2</artifactId>-->
<!-- <version>2.1.214</version>-->
<!-- </dependency>-->
<!-- <dependency>-->
<!-- <groupId>org.yaml</groupId>-->
<!-- <artifactId>snakeyaml</artifactId>-->

4
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/Account.java
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@ -1,4 +1,4 @@
/**
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
@ -16,8 +16,8 @@
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Id;
import com.mybatisflex.annotation.Table;
import com.mybatisflex.annotation.KeyType;
import com.mybatisflex.annotation.Table;
import java.util.Date;

68
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/Good.java Normal file
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@ -0,0 +1,68 @@
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Id;
import com.mybatisflex.annotation.Table;
/**
* 商品。
*
* @author 王帅
* @since 2023-06-07
*/
@Table("tb_good")
public class Good {
@Id
private Integer goodId;
private String name;
private double price;
public Integer getGoodId() {
return goodId;
}
public void setGoodId(Integer goodId) {
this.goodId = goodId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
@Override
public String toString() {
return "Good{" +
"goodId=" + goodId +
", name='" + name + '\'' +
", price=" + price +
'}';
}
}

60
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/Order.java Normal file
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@ -0,0 +1,60 @@
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Id;
import com.mybatisflex.annotation.Table;
import java.time.LocalDateTime;
/**
* 订单。
*
* @author 王帅
* @since 2023-06-07
*/
@Table("tb_order")
public class Order {
@Id
private int orderId;
private LocalDateTime createTime;
public int getOrderId() {
return orderId;
}
public void setOrderId(int orderId) {
this.orderId = orderId;
}
public LocalDateTime getCreateTime() {
return createTime;
}
public void setCreateTime(LocalDateTime createTime) {
this.createTime = createTime;
}
@Override
public String toString() {
return "Order{" +
"orderId=" + orderId +
", createTime=" + createTime +
'}';
}
}

48
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/OrderGood.java Normal file
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@ -0,0 +1,48 @@
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Table;
/**
* 订单与商品连接表。
*
* @author 王帅
* @since 2023-06-07
*/
@Table("tb_order_good")
public class OrderGood {
private Integer orderId;
private Integer goodId;
public Integer getOrderId() {
return orderId;
}
public void setOrderId(Integer orderId) {
this.orderId = orderId;
}
public Integer getGoodId() {
return goodId;
}
public void setGoodId(Integer goodId) {
this.goodId = goodId;
}
}

67
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/OrderInfo.java Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import java.time.LocalDateTime;
import java.util.List;
/**
* 订单信息。
*
* @author 王帅
* @since 2023-06-07
*/
public class OrderInfo {
private Integer orderId;
private LocalDateTime createTime;
private List<Good> goodList;
public Integer getOrderId() {
return orderId;
}
public void setOrderId(Integer orderId) {
this.orderId = orderId;
}
public LocalDateTime getCreateTime() {
return createTime;
}
public void setCreateTime(LocalDateTime createTime) {
this.createTime = createTime;
}
public List<Good> getGoodList() {
return goodList;
}
public void setGoodList(List<Good> goodList) {
this.goodList = goodList;
}
@Override
public String toString() {
return "OrderInfo{" +
"orderId=" + orderId +
", createTime=" + createTime +
", goodList=" + goodList +
'}';
}
}

68
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/Role.java Normal file
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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Id;
import com.mybatisflex.annotation.Table;
/**
* 角色。
*
* @author 王帅
* @since 2023-06-07
*/
@Table("tb_role")
public class Role {
@Id
private Integer roleId;
private String roleKey;
private String roleName;
public Integer getRoleId() {
return roleId;
}
public void setRoleId(Integer roleId) {
this.roleId = roleId;
}
public String getRoleKey() {
return roleKey;
}
public void setRoleKey(String roleKey) {
this.roleKey = roleKey;
}
public String getRoleName() {
return roleName;
}
public void setRoleName(String roleName) {
this.roleName = roleName;
}
@Override
public String toString() {
return "Role{" +
"roleId=" + roleId +
", roleKey='" + roleKey + '\'' +
", roleName='" + roleName + '\'' +
'}';
}
}

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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Id;
import com.mybatisflex.annotation.Table;
/**
* 用户。
*
* @author 王帅
* @since 2023-06-07
*/
@Table("tb_user")
public class User {
@Id
private Integer userId;
private String userName;
private String password;
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Override
public String toString() {
return "User{" +
"userId=" + userId +
", userName='" + userName + '\'' +
", password='" + password + '\'' +
'}';
}
}

86
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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import java.util.List;
/**
* 用户信息。
*
* @author 王帅
* @since 2023-06-07
*/
public class UserInfo {
private Integer userId;
private String userName;
private String password;
private List<Role> roleList;
private List<OrderInfo> orderInfoList;
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public List<Role> getRoleList() {
return roleList;
}
public void setRoleList(List<Role> roleList) {
this.roleList = roleList;
}
public List<OrderInfo> getOrderInfoList() {
return orderInfoList;
}
public void setOrderInfoList(List<OrderInfo> orderInfoList) {
this.orderInfoList = orderInfoList;
}
@Override
public String toString() {
return "UserInfo{" +
"userId=" + userId +
", userName='" + userName + '\'' +
", password='" + password + '\'' +
", roleList=" + roleList +
", orderInfoList=" + orderInfoList +
'}';
}
}

48
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/UserOrder.java Normal file
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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Table;
/**
* 用户订单映射。
*
* @author 王帅
* @since 2023-06-07
*/
@Table("tb_user_order")
public class UserOrder {
private Integer userId;
private Integer orderId;
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public Integer getOrderId() {
return orderId;
}
public void setOrderId(Integer orderId) {
this.orderId = orderId;
}
}

48
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/UserRole.java Normal file
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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import com.mybatisflex.annotation.Table;
/**
* 用户与角色连接表。
*
* @author 王帅
* @since 2023-06-07
*/
@Table("tb_user_role")
public class UserRole {
private Integer userId;
private Integer roleId;
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public Integer getRoleId() {
return roleId;
}
public void setRoleId(Integer roleId) {
this.roleId = roleId;
}
}

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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import java.util.List;
/**
* 用户 VO 对象。
*
* @author 王帅
* @since 2023-06-07
*/
public class UserVO {
private String userId;
private String userName;
private List<Role> roleList;
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public List<Role> getRoleList() {
return roleList;
}
public void setRoleList(List<Role> roleList) {
this.roleList = roleList;
}
@Override
public String toString() {
return "UserVO{" +
"userId='" + userId + '\'' +
", userName='" + userName + '\'' +
", roleList=" + roleList +
'}';
}
}

74
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/UserVO1.java Normal file
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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
import java.util.List;
/**
* @author 王帅
* @since 2023-06-07
*/
public class UserVO1 {
private String userId;
private String userName;
private List<Role> roleList;
private Role role;
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public List<Role> getRoleList() {
return roleList;
}
public void setRoleList(List<Role> roleList) {
this.roleList = roleList;
}
public Role getRole() {
return role;
}
public void setRole(Role role) {
this.role = role;
}
@Override
public String toString() {
return "UserVO1{" +
"userId='" + userId + '\'' +
", userName='" + userName + '\'' +
", roleList=" + roleList +
", role=" + role +
'}';
}
}

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mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/UserVO2.java Normal file
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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
/**
* @author 王帅
* @since 2023-06-07
*/
public class UserVO2 {
private String userId;
private String userName;
private Role role;
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public Role getRole() {
return role;
}
public void setRole(Role role) {
this.role = role;
}
@Override
public String toString() {
return "UserVO2{" +
"userId='" + userId + '\'' +
", userName='" + userName + '\'' +
", role=" + role +
'}';
}
}

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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.model;
/**
* @author 王帅
* @since 2023-06-07
*/
public class UserVO3 {
private String userId;
private String userName;
private Integer roleId;
private String roleKey;
private String roleName;
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public Integer getRoleId() {
return roleId;
}
public void setRoleId(Integer roleId) {
this.roleId = roleId;
}
public String getRoleKey() {
return roleKey;
}
public void setRoleKey(String roleKey) {
this.roleKey = roleKey;
}
public String getRoleName() {
return roleName;
}
public void setRoleName(String roleName) {
this.roleName = roleName;
}
@Override
public String toString() {
return "UserVO3{" +
"userId='" + userId + '\'' +
", userName='" + userName + '\'' +
", roleId=" + roleId +
", roleKey='" + roleKey + '\'' +
", roleName='" + roleName + '\'' +
'}';
}
}

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@ -1,16 +1,17 @@
# DataSource Config
spring:
h2:
console:
enabled: true
# h2:
# console:
# enabled: true
datasource:
driver-class-name: org.h2.Driver
username: sa
password:
sql:
init:
schema-locations: classpath:schema.sql
data-locations: classpath:data.sql
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/mp_test
username: root
password: 12345678
# sql:
# init:
# schema-locations: classpath:schema.sql
# data-locations: classpath:data.sql
mybatis-flex:
mapper-locations:
- classpath*:/mapper/*.xml

15
mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/resources/mapper/accountMapper.xml
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@ -2,6 +2,21 @@
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.mybatisflex.test.mapper.MyAccountMapper">
<!-- <resultMap id="testResultMap" type="com.mybatisflex.test.model.UserVO">-->
<!-- <id column="user_id" property="userId"/>-->
<!-- <result column="user_name" property="userName"/>-->
<!-- <collection property="roleList" ofType="com.mybatisflex.test.model.Role">-->
<!-- <id column="role_id" property="roleId"/>-->
<!-- <result column="role_key" property="roleKey"/>-->
<!-- <result column="role_name" property="roleName"/>-->
<!-- </collection>-->
<!-- <association property="role" javaType="com.mybatisflex.test.model.Role">-->
<!-- <id column="role_id" property="roleId"/>-->
<!-- <result column="role_key" property="roleKey"/>-->
<!-- <result column="role_name" property="roleName"/>-->
<!-- </association>-->
<!-- </resultMap>-->
<!-- selectByName -->
<select id="selectByName" resultType="com.mybatisflex.test.model.Account">
select * from `tb_account` where `user_name` = #{name}

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mybatis-flex-test/mybatis-flex-spring-boot-test/src/test/java/com/mybatisflex/test/mapper/UserMapperTest.java Normal file
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/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test.mapper;
import com.mybatisflex.core.query.QueryWrapper;
import com.mybatisflex.test.model.UserInfo;
import com.mybatisflex.test.model.UserVO1;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.List;
import static com.mybatisflex.test.model.table.GoodTableDef.GOOD;
import static com.mybatisflex.test.model.table.OrderGoodTableDef.ORDER_GOOD;
import static com.mybatisflex.test.model.table.OrderTableDef.ORDER;
import static com.mybatisflex.test.model.table.RoleTableDef.ROLE;
import static com.mybatisflex.test.model.table.UserOrderTableDef.USER_ORDER;
import static com.mybatisflex.test.model.table.UserRoleTableDef.USER_ROLE;
import static com.mybatisflex.test.model.table.UserTableDef.USER;
/**
* @author 王帅
* @since 2023-06-07
*/
@SpringBootTest
class UserMapperTest {
@Autowired
private UserMapper userMapper;
@Test
void testSelectOne() {
QueryWrapper queryWrapper = QueryWrapper.create()
.select(USER.USER_ID, USER.USER_NAME, ROLE.ALL_COLUMNS)
.from(USER.as("u"))
.leftJoin(USER_ROLE).as("ur").on(USER_ROLE.USER_ID.eq(USER.USER_ID))
.leftJoin(ROLE).as("r").on(USER_ROLE.ROLE_ID.eq(ROLE.ROLE_ID))
.where(USER.USER_ID.eq(3));
System.out.println(queryWrapper.toSQL());
// UserVO userVO = userMapper.selectListByQueryAs(queryWrapper, UserVO.class);
UserVO1 userVO = userMapper.selectOneByQueryAs(queryWrapper, UserVO1.class);
// UserVO2 userVO = userMapper.selectListByQueryAs(queryWrapper, UserVO2.class);
// UserVO3 userVO = userMapper.selectListByQueryAs(queryWrapper, UserVO3.class);
System.err.println(userVO);
}
@Test
void testSelectList() {
QueryWrapper queryWrapper = QueryWrapper.create()
.select(USER.USER_ID, USER.USER_NAME, ROLE.ALL_COLUMNS)
.from(USER.as("u"))
.leftJoin(USER_ROLE).as("ur").on(USER_ROLE.USER_ID.eq(USER.USER_ID))
.leftJoin(ROLE).as("r").on(USER_ROLE.ROLE_ID.eq(ROLE.ROLE_ID))
.where(USER.USER_ID.ge(2));
System.out.println(queryWrapper.toSQL());
// List<UserVO> userVOS = userMapper.selectListByQueryAs(queryWrapper, UserVO.class);
List<UserVO1> userVOS = userMapper.selectListByQueryAs(queryWrapper, UserVO1.class);
// List<UserVO2> userVOS = userMapper.selectListByQueryAs(queryWrapper, UserVO2.class);
// List<UserVO3> userVOS = userMapper.selectListByQueryAs(queryWrapper, UserVO3.class);
userVOS.forEach(System.err::println);
}
@Test
void testComplexSelectList() {
QueryWrapper queryWrapper = QueryWrapper.create()
.select(USER.ALL_COLUMNS, ROLE.ALL_COLUMNS, ORDER.ALL_COLUMNS, GOOD.ALL_COLUMNS)
.from(USER.as("u"))
.leftJoin(USER_ROLE).as("ur").on(USER.USER_ID.eq(USER_ROLE.USER_ID))
.leftJoin(ROLE).as("r").on(ROLE.ROLE_ID.eq(USER_ROLE.ROLE_ID))
.leftJoin(USER_ORDER).as("uo").on(USER.USER_ID.eq(USER_ORDER.USER_ID))
.leftJoin(ORDER).as("o").on(ORDER.ORDER_ID.eq(USER_ORDER.ORDER_ID))
.leftJoin(ORDER_GOOD).as("og").on(ORDER.ORDER_ID.eq(ORDER_GOOD.ORDER_ID))
.leftJoin(GOOD).as("g").on(GOOD.GOOD_ID.eq(ORDER_GOOD.GOOD_ID));
System.err.println(queryWrapper.toSQL());
List<UserInfo> userInfos = userMapper.selectListByQueryAs(queryWrapper, UserInfo.class);
userInfos.forEach(System.err::println);
}
}