test: 测试 Active Record 联表查询。

mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/Role.java

@@ -16,6 +16,7 @@
 
 package com.mybatisflex.test.model;
 
+import com.mybatisflex.annotation.Column;
 import com.mybatisflex.annotation.Id;
 import com.mybatisflex.annotation.Table;
 
@@ -36,6 +37,7 @@ public class Role implements Comparable<Role> {
     private String roleKey;
     private String roleName;
 
+    @Column(ignore = true)
     private List<UserVO> userVOS;
 
     public Integer getRoleId() {

mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/User.java

@@ -17,7 +17,9 @@
 package com.mybatisflex.test.model;
 
 import com.mybatisflex.annotation.Id;
+import com.mybatisflex.annotation.RelationManyToMany;
 import com.mybatisflex.annotation.Table;
+import com.mybatisflex.core.activerecord.Model;
 
 import java.util.List;
 
@@ -29,15 +31,26 @@ import java.util.List;
  */
 
 @Table("tb_user")
-public class User {
+public class User extends Model<User> {
 
     @Id
     private Integer userId;
     private String userName;
     private String password;
-    //@Column(ignore = true)
+
+    @RelationManyToMany(
+        selfField = "userId",
+        targetField = "roleId",
+        joinTable = "tb_user_role",
+        joinSelfColumn = "user_id",
+        joinTargetColumn = "role_id"
+    )
     private List<Role> roleList;
 
+    public static User create() {
+        return new User();
+    }
+
     public Integer getUserId() {
         return userId;
     }

mybatis-flex-test/mybatis-flex-spring-boot-test/src/test/java/com/mybatisflex/test/mapper/ActiveRecordTest.java

@@ -19,11 +19,15 @@ package com.mybatisflex.test.mapper;
 import com.mybatisflex.core.mybatis.Mappers;
 import com.mybatisflex.core.query.QueryWrapper;
 import com.mybatisflex.test.model.Good;
+import com.mybatisflex.test.model.User;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
 
 import static com.mybatisflex.test.model.table.GoodTableDef.GOOD;
+import static com.mybatisflex.test.model.table.RoleTableDef.ROLE;
+import static com.mybatisflex.test.model.table.UserRoleTableDef.USER_ROLE;
+import static com.mybatisflex.test.model.table.UserTableDef.USER;
 
 /**
  * @author 王帅
@@ -105,4 +109,19 @@ class ActiveRecordTest {
             .forEach(System.out::println);
     }
 
+    @Test
+    void testRelation() {
+        User user1 = User.create().select(USER.ALL_COLUMNS, ROLE.ALL_COLUMNS)
+            .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(2))
+            .one();
+
+        User user2 = User.create()
+            .where(USER.USER_ID.eq(2))
+            .oneWithRelations();
+
+        Assertions.assertEquals(user1.toString(), user2.toString());
+    }
+
 }