2 Star 2 Fork 1

1701/easy-sqlx

加入 Gitee
与超过 1200万 开发者一起发现、参与优秀开源项目,私有仓库也完全免费 :)
免费加入
克隆/下载
贡献代码
同步代码
取消
提示: 由于 Git 不支持空文件夾,创建文件夹后会生成空的 .keep 文件
Loading...
README
Apache-2.0

easy-sqlx

介绍

根据结构体定义同步生成数据库表结构,简化增删改操作和大部分的单表查询操作,省去大部分手写 sql 语句和 bind 参数操作。

当前仅支持 postgres 数据库。

目标是帮助大部分 sql 功能开发节省心思,而不是覆盖全部的 sql 功能。

要求

1 sqlx 版本 >= 0.8
2 如果依据 struct 定义生成同步数据库表结构,请尽量不要使用 query 宏,以免造成不必要的困扰

安装

在 Cargo.toml 中添加依赖

[dependencies]
# easy-sqlx-core = { git = "https://gitee.com/knowgo/easy-sqlx.git", features = ["postgres"] }
# easy-sqlx = { git = "https://gitee.com/knowgo/easy-sqlx.git" }

tokio = { version = "1", features = ["full"] }
easy-sqlx-core = { features = ["postgres"], version = "^0" }
easy-sqlx = { version = "^0.8" }
sqlx = { version = "^0", features = [
    "runtime-async-std",
    "tls-native-tls",
    "postgres",
    "macros",
    "chrono",
] }
tracing = { version = "0.1.40" }
tracing-subscriber = { version = "0.3.18" } # , features = ["env-filter"] }

chrono = { version = "0.4", features = ["serde"] }

使用说明

同步表结构

定义表结构 #[derive(Table)]

use easy_sqlx::WhereAppend; // 引用 WhereAppend

#[derive(Table, FromRow, Debug)]
#[table(
    indexes [
        (name = "name_index_1", columns("name"))
    ]
)]
#[index(columns("name"))]
struct User {
    #[col(column = "key", comment = "123")]
    #[col(pk)]
    pub id: i64,
    #[col(comment = "姓名", len = 20)]
    pub name: Option<String>,
    pub blob: Option<Vec<u8>>,
    #[col()]
    pub create_time: Option<chrono::NaiveTime>,
}

不同步表结构的话,只需要使用 Table 和 col(pk) 即可,可空字段必须为 Option<data_type>

table 属性
    name            表名称
    query_only      只做查询操作,含此属性的结构体不同步表结构,不生成增删改代码
    comment         注释,会添加到字段对应的每一个操作函数的注释中
    schema          表空间
    from            从另一个表 rename 而来
    recreate        重新创建表,在同一个数据库中不会重复操作,直到修改其值
    trim_columns    清理 struct 中未定义的数据库列
    trim_indexes    清理 table 未定义的索引
    indexes         索引数组,参见索引

index 属性,可定义在 table 属性内,也可以单独定义到 struct
    name            索引名称
    columns()       索引的列,字符串数组,使用小括号包围
    unique          是否唯一索引

col 属性,Option 包裹的列为 nullable ,否则为必填
    ignore          忽略,不与数据库关联
    pk              主键
    autoincr        自增类型
    column          字段名称
    len             长度,字符串长度或精度
    col_type        sql 数据类型,用于自定义数据库类型
    comment         说明
    default         默认值
    from[未完成]    从另一个字段重命名而来 
    replace         如果修改数据类型发生错误时,删除原字段,重新创建

同步表结构,参数 connection 为数据库连接

sync_tables(connection, vec![User::table()]).await?;
添加 1 全量添加
let user = User {
    id: 1,
    name: Some("test".to_string()),
    ..Default::default()
};
user.insert().execute(&mut conn).await.unwrap();
添加 2 只添加部分字段,其它字段为 null,如果没有为必填字段 set 值,大概率会出错
User::build_insert()
    .set(User::id(2)) // 设置字段值,未设置的为 null
    .execute(&mut conn)
    .await
    .unwrap();
修改 1 根据主键全量修改,如果可空字段的值为 None 则会更新对应的表中的字段值为 null
let user = User {
    id: 1,
    name: Some("test---1".to_string()),
    ..Default::default()
};
user.update().execute(&mut conn).await.unwrap();
修改 2 根据条件修改
User::build_update()
        .set(User::name("007".to_string()))
        .and(User::id_eq(2))
        .execute(&mut conn)
        .await
        .unwrap();
修改 3 根据主键修改
User::update_by_id(2)
        .set(User::name("by_id"))
        .execute(&mut conn)
        .await
        .unwrap();
关于添加和修改的 set 函数
接收 User::*() 参数,其中 * 为字段名称,括号内为要设置的值
对于可空字段,即 Option 包裹的字段,还可以使用  User::*_opt() 函数来设置值,
此时可以传入 None 来设置字段为 null
删除 1 根据主键 删除
let user = User {
    id: 1, // 主键值为 1
    name: Some("test---1".to_string()),
    ..Default::default()
};

user.delete().execute(&mut conn).await.unwrap();
删除 2 根据主键 删除
User::delete_by_id(2).execute(&mut conn).await.unwrap();
删除 3 根据条件 删除
User::build_delete()
        .and(User::id_eq(2)) // 删除 id 为 2 的记录
        .execute(&mut conn).await.unwrap();
对于增删改的说明

增删改调用的 execute 函数,有对应 execute_return 函数, 此函数可以返回该条语句插入、修改、或删除的记录

查询 1 根据主键查询
let u: User = User::select_by_id(1) // 联合主键会有多个参数
.one(&mut conn).await.unwrap();
println!("{:?}", u);
查询 2 根据条件查询
User::select() // 生成 SelectBuilder
    .and(User::id_eq(1)) // 查询条件 id = 1
    .one(&mut conn).await.unwrap();
查询 3 返回 HashMap
let umap: HashMap<i64, User> = User::select()
        .map_all(&mut conn, |o: &User| o.id)
        .await
        .unwrap();
println!("{:?}", umap);
查询 4 查询最大值和最小值
let max: Option<i64> = User::select()
        .optional_scalar(&mut conn, &User::col_id().max())
        .await
        .unwrap();
println!("max: {}", min.unwrap());
let min: Option<i64> = User::select()
        .optional_scalar(&mut conn, &User::col_id().min())
        .await
        .unwrap();
println!("min: {}", min.unwrap());
分页查询
let wh = Where::new(User::id_gt(0)); // id > 0
let mut page_result: PageResult<User> = User::select()
    .and(wh.clone())
    .order_by(User::id_asc()) // id 升序
    .page(&mut conn, &PageRequest::new(10, 1))
    .await
    .unwrap();
// 统计分页信息
page_result.set_total( User::select().and(wh).count(&mut conn).await.unwrap());
关于查询条件及返回
select_by_id 和 select 返回一个与表关联的 SelectBuilder 对象。
SelectBuilder 提供了查询条件的添加和组合功能,并支持排序条件
and 和 or 为添加查询条件函数,首次添加条件时 and 和 or 功能一致,再次添加时
and(cond) : cond 将于前面所有的条件进行 and 操作
or(cond) : cond 将于前面所有的条件进行 or 操作
参数 cond 也可以是 Where 对象,Where 对象可以包含多个条件
实际上,查询本身的条件也是 Where 对象。

每一个查询条件项都使用类似 User::*_eq() 的函数生成,其中 * 为字段名称,
下线线之后表示操作符,当前支持
    eq =
    gt >
    ge >=
    lt <
    le <=
    neq <>
    like like
以及接收数组(注意:调用前要保证数组不为 empty)作为参数的
    in          in ()
    not_in      not in ()
和没有参数的
    is_null
    is_not_null

SelectBuilder 提供以下几种获取数据的方法
    one                 获取一条记录
    optional            获取一条记录,如果不存在返回 None
    all                 获取全部记录
    map_all             以 HashMap 形式返回查询结果
    page                分页查询
    count               查询记录数
    one_scalar          获取一个标量
    optional_scalar     获取一个可选标量,如果不存在返回 None
    all_scalars         获取全部标量
    page_scalars        分页获取标量 
查询必要字段, UserSummary 不要同步表结构,即不需要在 sync_tables 函数的参数中出现 ,其 query_only 属性限制生成代码量
#[derive(Table, Default, Debug, Clone, FromRow)]
#[table(name = "User", query_only)] // name 属性指定表名称, query_only 表示只生成查询相关代码
pub struct UserSummary {
    #[col(pk)]
    pub id: i64,
    pub name: String,
}

let u: UserSummary = UserSummary::select_by_id(1)
    .one(&mut conn).await.unwrap();
println!("{:?}", u);
打印 sql 日志

修改 Cargo.toml

easy-sqlx-core = { features = ["postgres", "logsql"], version = "^0" }

程序启动时,订阅日志

let layer = tracing_subscriber::fmt::layer()
        .with_file(true)
        .with_line_number(true)
        .with_filter(tracing_subscriber::filter::LevelFilter::INFO);
Registry::default().with(layer).init();
Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright [yyyy] [name of copyright owner] 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 http://www.apache.org/licenses/LICENSE-2.0 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.

简介

rust 简化 sqlx 使用 展开 收起
README
Apache-2.0
取消

发行版

暂无发行版

贡献者

全部

语言

近期动态

不能加载更多了
马建仓 AI 助手
尝试更多
代码解读
代码找茬
代码优化
1
https://gitee.com/knowgo/easy-sqlx.git
git@gitee.com:knowgo/easy-sqlx.git
knowgo
easy-sqlx
easy-sqlx
master

搜索帮助