Fluent Mybatis零xml配置实现复杂嵌套查询

@DisplayName("嵌套查询和主查询的表是同一个")
@Test
void test_in_same_table_query() {
    UserQuery query = new UserQuery()
        .where.id().in(q -> q.selectId()
            .where.id().eq(3L).end())
        .and.userName().like("user")
        .and.age().gt(23).end();

    List list = mapper.listEntity(query);
    
    // 通过Test4J工具，验证sql语句
    db.sqlList().wantFirstSql()
        .eq("SELECT id, gmt_create, gmt_modified, is_deleted, account, age, avatar, birthday, bonus_points, e_mail, password, phone, status, user_name " +
            "FROM user WHERE id IN (SELECT id FROM user WHERE id = ?) " +
            "AND user_name LIKE ? " +
            "AND age > ?");
}

@DisplayName("嵌套查询和主查询的表是不同")
@Test
void test_in_difference_table_query() {
    UserQuery query = new UserQuery()
        .selectId()
        .where.addressId().in(ReceivingAddressQuery.class, q -> q.selectId()
            .where.id().in(new int[]{1, 2}).end())
        .end();
    mapper.listEntity(query);
    
    // 通过Test4J工具，验证sql语句
    db.sqlList().wantFirstSql()
        .eq("SELECT id " +
            "FROM user " +
            "WHERE address_id IN (SELECT id FROM receiving_address WHERE id IN (?, ?))");
}

@DisplayName("EXISTS查询")
@Test
void test_exists_query() {
    UserQuery query = new UserQuery()
        .where.exists(ReceivingAddressQuery.class, q -> q
            .where.detailAddress().like("杭州")
            .and.id().apply(" = user.address_id").end())
        .end();
    mapper.listEntity(query);
    
    // 通过Test4J工具，验证sql语句
    db.sqlList().wantFirstSql()
        .eq("SELECT id, gmt_create, gmt_modified, is_deleted, account, address_id, age, avatar, birthday, bonus_points, e_mail, password, phone, status, user_name " +
                "FROM user " +
                "WHERE EXISTS (SELECT *" +
                "   FROM receiving_address" +
                "   WHERE detail_address LIKE ?" +
                "   AND id = user.address_id)",
            StringMode.SameAsSpace);
}