Juice SQL Mapper Framework For Golang

Juice is a SQL mapper framework for Golang, inspired by MyBatis. It is simple, lightweight, and easy to use and extend. This document provides a brief introduction to Juice and its usage.

• Installation
• Example
• API Documentation
• License
• Support Me

Installation

To install Juice, use the following command:

go get github.com/go-juicedev/juice

Example

touch config.xml

add the following content to config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//juice.org//DTD Config 1.0//EN"
        "https://raw.githubusercontent.com/eatmoreapple/juice/main/config.dtd">

<configuration>
    <environments default="prod">
        <environment id="prod">
            <dataSource>root:qwe123@tcp(localhost:3306)/database</dataSource>
            <driver>mysql</driver>
        </environment>
    </environments>

    <mappers>
        <mapper resource="mappers.xml"/>
    </mappers>
</configuration>

touch mappers.xml

add the following content to mappers.xml

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapper PUBLIC "-//juice.org//DTD Config 1.0//EN"
        "https://raw.githubusercontent.com/eatmoreapple/juice/main/mapper.dtd">

<mapper namespace="main.Repository">
    <select id="HelloWorld">
        <if test="1 == 1">  <!-- always be true -->
            select "hello world"
        </if>
    </select>
</mapper>

touch main.go

add the following content to main.go

package main

import (
	"context"
	"fmt"
	"github.com/go-juicedev/juice"
	_ "github.com/go-sql-driver/mysql"
)

type Repository interface {
	HelloWorld(ctx context.Context) (string, error)
}

type RepositoryImpl struct{}

func (r RepositoryImpl) HelloWorld(ctx context.Context) (string, error) {
	manager := juice.ManagerFromContext(ctx)
	var iface Repository = r
	executor := juice.NewGenericManager[string](manager).Object(iface.HelloWorld)
	return executor.QueryContext(ctx, nil)
}

func main() {
	cfg, err := juice.NewXMLConfiguration("config.xml")
	if err != nil {
		panic(err)
	}
	
	engine, err := juice.Default(cfg)
	if err != nil {
		panic(err)
	}
	defer engine.Close()
	
	ctx := juice.ContextWithManager(context.Background(), engine)
	repo := RepositoryImpl{}
	result, err := repo.HelloWorld(ctx)
	fmt.Println(result, err) // hello world <nil>
}

go run main.go

API Documentation

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License

Juice is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.

Support Me

If you like my work, please consider supporting me by buying me a coffee.