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Please read the documentation website carefully when using the tutorial. DOC
- High Performance， can reach 751020 Qps/s, and the total time consumed is 0.14s (test environment returns simulated SQL data, concurrently 1000, total 100000, 6-core 16GB win10)
- Painless migration from Java to go，Compatible with most Java(Mybatis3,Mybatis Plus) ，Painless migration of XML SQL files from Java Spring Mybatis to Go language（Modify only the javaType of resultMap to specify go language type for langType）
- Declarative transaction/AOP transaction/transaction BehaviorOnly one line Tag is needed to define AOP transactions and transaction propagation behavior
- Extensible Log InterfaceAsynchronous message queue day, SQL log in framework uses cached channel to realize asynchronous message queue logging
- dynamic sql，contains 15 utilities Features
<select>,<update>,<insert>,<delete>,<trim>,<if>,<set>,<where>,<foreach>,<resultMap>,<bind>,<choose><when><otherwise>,<sql><include> - Intelligent expressionProcessing dynamic judgment and computation tasks（such as：
#{foo.Bar}#{arg+1}#{arg*1}#{arg/1}#{arg-1}）,For example, write fuzzy queriesselect * from table where phone like #{phone+'%'}(Note the post-percentile query run in index) - Dynamic Data SourceMultiple data sources can be customized to dynamically switch multiple database instances
- Template label（new）One line of code to achieve add, delete, modify, delete logic, optimistic lock, but also retain perfect scalability (tag body can continue to expand SQL logic)
- Optimistic Lock（new）
<updateTemplate>Optimistic locks to prevent concurrent competition to modify records as much as possible - Logical deletion（new）
<insertTemplate><updateTemplate><deleteTemplate><selectTemplate>Logical deletion, prevent accidental deletion of data, data recovery is simple - RPC/MVC Component Support（new）To make the service perfect for RPC (reducing parameter restrictions), dynamic proxy, transaction subscription, easy integration and extension of micro services, click on the link https://github.com/zhuxiujia/easyrpc
//Traditional database
Mysql: github.com/go-sql-driver/mysql
MyMysql: github.com/ziutek/mymysql/godrv
Postgres: github.com/lib/pq
SQLite: github.com/mattn/go-sqlite3
MsSql: github.com/denisenkom/go-mssqldb
Oracle: github.com/mattn/go-oci8
//Distributed NewSql database
Tidb: github.com/go-sql-driver/mysql
CockroachDB: github.com/lib/pqTutorial source code https://github.com/zhuxiujia/GoMybatis/tree/master/example
- GoPath use, download GoMybatis and the corresponding database driver with the go get command
go get github.com/zhuxiujia/GoMybatis
go get github.com/go-sql-driver/mysql- Go mod use
//go.mod加入依赖
require (
github.com/go-sql-driver/mysql v1.5.0
github.com/zhuxiujia/GoMybatis v6.5.9+incompatible
)In practice, we use mapper to define the content of xml. It is suggested that the * Mapper. XML file be stored in the project directory. When editing xml, we can enjoy IDE rendering and intelligent prompts such as GoLand. Production environments can use statikFS to package XML files in the process
- main.go
var xmlBytes = []byte(`
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"https://raw.githubusercontent.com/zhuxiujia/GoMybatis/master/mybatis-3-mapper.dtd">
<mapper>
<select id="SelectAll">
select * from biz_activity where delete_flag=1 order by create_time desc
</select>
</mapper>
`)import (
"fmt"
_ "github.com/go-sql-driver/mysql" //Select the required database-driven imports
"github.com/zhuxiujia/GoMybatis"
)
type ExampleActivityMapperImpl struct {
SelectAll func() ([]Activity, error)
}
func main() {
var engine = GoMybatis.GoMybatisEngine{}.New()
//Mysql link format user name: password @ (database link address: port)/database name, such as root: 123456 @(***.com: 3306)/test
err := engine.Open("mysql", "*?charset=utf8&parseTime=True&loc=Local")
if err != nil {
panic(err)
}
var exampleActivityMapperImpl ExampleActivityMapperImpl
//Loading XML implementation logic to ExampleActivity Mapper Impl
engine.WriteMapperPtr(&exampleActivityMapperImpl, xmlBytes)
//use mapper
result, err := exampleActivityMapperImpl.SelectAll(&result)
if err != nil {
panic(err)
}
fmt.Println(result)
}<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"https://raw.githubusercontent.com/zhuxiujia/GoMybatis/master/mybatis-3-mapper.dtd">
<mapper>
<!--logic_enable -->
<!--logic_deleted -->
<!--logic_undelete -->
<!--version_enable support int,int8,int16,int32,int64-->
<resultMap id="BaseResultMap" tables="biz_activity">
<id column="id" langType="string"/>
<result column="name" langType="string"/>
<result column="pc_link" langType="string"/>
<result column="h5_link" langType="string"/>
<result column="remark" langType="string"/>
<result column="sort" langType="int"/>
<result column="status" langType="status"/>
<result column="version" langType="int"
version_enable="true"/>
<result column="create_time" langType="time.Time"/>
<result column="delete_flag" langType="int"
logic_enable="true"
logic_undelete="1"
logic_deleted="0"/>
</resultMap>
<!--模板标签: columns wheres sets 支持逗号,分隔表达式，*?* 为判空表达式-->
<!--插入模板:默认id="insertTemplate,test="field != null",where自动设置逻辑删除字段,支持批量插入" -->
<insertTemplate/>
<!--查询模板:默认id="selectTemplate,where自动设置逻辑删除字段-->
<selectTemplate wheres="name?name = #{name}"/>
<!--更新模板:默认id="updateTemplate,set自动设置乐观锁版本号-->
<updateTemplate sets="name?name = #{name},remark?remark=#{remark}" wheres="id?id = #{id}"/>
<!--删除模板:默认id="deleteTemplate,where自动设置逻辑删除字段-->
<deleteTemplate wheres="name?name = #{name}"/>
</mapper> XML corresponds to the Mapper structure method defined below
type Activity struct {
Id string `json:"id"`
Uuid string `json:"uuid"`
Name string `json:"name"`
PcLink string `json:"pcLink"`
H5Link string `json:"h5Link"`
Remark string `json:"remark"`
Version int `json:"version"`
CreateTime time.Time `json:"createTime"`
DeleteFlag int `json:"deleteFlag"`
}
type ExampleActivityMapper struct {
SelectTemplate func(name string) ([]Activity, error) `args:"name"`
InsertTemplate func(arg Activity) (int64, error)
InsertTemplateBatch func(args []Activity) (int64, error) `args:"args"`
UpdateTemplate func(arg Activity) (int64, error) `args:"name"`
DeleteTemplate func(name string) (int64, error) `args:"name"`
} //To add a second MySQL database, change Mysql Uri to your second data source link
var engine = GoMybatis.GoMybatisEngine{}.New()
engine.Open("mysql", MysqlUri)//添加第二个mysql数据库,请把MysqlUri改成你的第二个数据源链接
var router = GoMybatis.GoMybatisDataSourceRouter{}.New(func(mapperName string) *string {
//根据包名路由指向数据源
if strings.Contains(mapperName, "example.") {
var url = MysqlUri//第二个mysql数据库,请把MysqlUri改成你的第二个数据源链接
fmt.Println(url)
return &url
}
return nil
})
engine.SetDataSourceRouter(&router) engine.SetLogEnable(true)
engine.SetLog(&GoMybatis.LogStandard{
PrintlnFunc: func(messages []byte) {
//do someting save messages
},
})
| Transaction type | Explain |
|---|---|
| PROPAGATION_REQUIRED | Represents that if the current transaction exists, the current transaction is supported. Otherwise, a new transaction will be started. Default transaction type. |
| PROPAGATION_SUPPORTS | Represents that if the current transaction exists, the current transaction is supported, and if there is no transaction at present, it is executed in a non-transactional manner. |
| PROPAGATION_MANDATORY | Represents that if the current transaction exists, the current transaction is supported, and if no transaction exists, the transaction nesting error is returned. |
| PROPAGATION_REQUIRES_NEW | Represents that a new Session opens a new transaction and suspends the current transaction if it currently exists. |
| PROPAGATION_NOT_SUPPORTED | Represents that an operation is performed in a non-transactional manner. If a transaction exists, a new Session is created to perform the operation in a non-transactional manner, suspending the current transaction. |
| PROPAGATION_NEVER | Represents that an operation is executed in a non-transactional manner and returns a transaction nesting error if a transaction currently exists. |
| PROPAGATION_NESTED | Represents that if the current transaction exists, it will be executed within the nested transaction. If the nested transaction rolls back, it will only roll back within the nested transaction and will not affect the current transaction. If there is no transaction at the moment, do something similar to PROPAGATION_REQUIRED. |
| PROPAGATION_NOT_REQUIRED | Represents that if there is currently no transaction, a new transaction will be created, otherwise an error will be returned. |
//Nested transaction services
type TestService struct {
exampleActivityMapper *ExampleActivityMapper //The service contains a mapper operation database similar to Java spring MVC
UpdateName func(id string, name string) error `tx:"" rollback:"error"`
UpdateRemark func(id string, remark string) error `tx:"" rollback:"error"`
}
func main() {
var testService TestService
testService = TestService{
exampleActivityMapper: &exampleActivityMapper,
UpdateRemark: func(id string, remark string) error {
testService.exampleActivityMapper.SelectByIds([]string{id})
panic(errors.New("Business exceptions")) // panic Triggered transaction rollback strategy
return nil // rollback:"error" A transaction rollback policy is triggered if the error type is returned and is not nil
},
UpdateName: func(id string, name string) error {
testService.exampleActivityMapper.SelectByIds([]string{id})
return nil
},
}
GoMybatis.AopProxyService(&testService, &engine)//Func must use AOP proxy service
testService.UpdateRemark("1","remark")
} //step1 To define your database model, you must include JSON annotations (default database fields), gm:"" annotations specifying whether the value is id, version optimistic locks, and logic logic soft deletion.
type UserAddress struct {
Id string `json:"id" gm:"id"`
UserId string `json:"user_id"`
RealName string `json:"real_name"`
Phone string `json:"phone"`
AddressDetail string `json:"address_detail"`
Version int `json:"version" gm:"version"`
CreateTime time.Time `json:"create_time"`
DeleteFlag int `json:"delete_flag" gm:"logic"`
}- Step 2: Create an Xml CreateTool. go in the main directory of your project as follows
func main() {
var bean = UserAddress{} //Here's just an example, which should be replaced by your own database model
GoMybatis.OutPutXml(reflect.TypeOf(bean).Name()+"Mapper.xml", GoMybatis.CreateXml("biz_"+GoMybatis.StructToSnakeString(bean), bean))
}
- Third, execute the command to get the UserAddressMapper. XML file in the current directory
go run XmlCreateTool.go- The following is the content of the automatically generated XML file
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"https://raw.githubusercontent.com/zhuxiujia/GoMybatis/master/mybatis-3-mapper.dtd">
<mapper>
<!--logic_enable Logical Delete Fields-->
<!--logic_deleted Logically delete deleted fields-->
<!--logic_undelete Logically Delete Undeleted Fields-->
<!--version_enable Optimistic lock version field, support int, int8, int16, int32, Int64-->
<resultMap id="BaseResultMap" tables="biz_user_address">
<id column="id" property="id"/>
<result column="id" property="id" langType="string" />
<result column="user_id" property="user_id" langType="string" />
<result column="real_name" property="real_name" langType="string" />
<result column="phone" property="phone" langType="string" />
<result column="address_detail" property="address_detail" langType="string" />
<result column="version" property="version" langType="int" version_enable="true" />
<result column="create_time" property="create_time" langType="Time" />
<result column="delete_flag" property="delete_flag" langType="int" logic_enable="true" logic_undelete="1" logic_deleted="0" />
</resultMap>
</mapper>- https://github.com/zhuxiujia/easy_mvc //mvc
- https://github.com/zhuxiujia/easyrpc //easyrpc
- https://github.com/zhuxiujia/easyrpc_discovery //easyrpc discovery
