Generate SQL Statements from the MyBatis3 Mapper XML file
Project description
mybatis-mapper2sql
Generate SQL Statements from the MyBatis3 Mapper XML file
Just for SQL Review https://github.com/hhyo/archery/issues/3
Installation
pip install mybatis-mapper2sql
Usage
import mybatis_mapper2sql
# Parse Mybatis Mapper XML files
mapper, xml_raw_text = mybatis_mapper2sql.create_mapper(xml='mybatis_mapper.xml')
# Get All SQL Statements from Mapper
statement = mybatis_mapper2sql.get_statement(mapper)
# Get SQL Statement By SQLId
statement = mybatis_mapper2sql.get_child_statement(mapper, sql_id)
Examples
test.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="Test">
<sql id="sometable">
fruits
</sql>
<sql id="somewhere">
WHERE
category = #{category}
</sql>
<sql id="someinclude">
FROM
<include refid="${include_target}"/>
<include refid="somewhere"/>
</sql>
<select id="testParameters">
SELECT
name,
category,
price
FROM
fruits
WHERE
category = #{category}
AND price > ${price}
</select>
<select id="testInclude">
SELECT
name,
category,
price
<include refid="someinclude">
<property name="prefix" value="Some"/>
<property name="include_target" value="sometable"/>
</include>
</select>
<select id="testIf">
SELECT
name,
category,
price
FROM
fruits
WHERE
1=1
<if test="category != null and category !=''">
AND category = #{category}
</if>
<if test="price != null and price !=''">
AND price = ${price}
<if test="price >= 400">
AND name = 'Fuji'
</if>
</if>
</select>
<select id="testTrim">
SELECT
name,
category,
price
FROM
fruits
<trim prefix="WHERE" prefixOverrides="AND|OR">
OR category = 'apple'
OR price = 200
</trim>
</select>
<select id="testWhere">
SELECT
name,
category,
price
FROM
fruits
<where>
AND category = 'apple'
<if test="price != null and price !=''">
AND price = ${price}
</if>
</where>
</select>
<update id="testSet">
UPDATE
fruits
<set>
<if test="category != null and category !=''">
category = #{category},
</if>
<if test="price != null and price !=''">
price = ${price},
</if>
</set>
WHERE
name = #{name}
</update>
<select id="testChoose">
SELECT
name,
category,
price
FROM
fruits
<where>
<choose>
<when test="name != null">
AND name = #{name}
</when>
<when test="category == 'banana'">
AND category = #{category}
<if test="price != null and price !=''">
AND price = ${price}
</if>
</when>
<otherwise>
AND category = 'apple'
</otherwise>
</choose>
</where>
</select>
<select id="testForeach">
SELECT
name,
category,
price
FROM
fruits
<where>
category = 'apple' AND
<foreach collection="apples" item="name" open="(" close=")" separator="OR">
<if test="name == 'Jonathan' or name == 'Fuji'">
name = #{name}
</if>
</foreach>
</where>
</select>
<insert id="testInsertMulti">
INSERT INTO
fruits
(
name,
category,
price
)
VALUES
<foreach collection="fruits" item="fruit" separator=",">
(
#{fruit.name},
#{fruit.category},
${fruit.price}
)
</foreach>
</insert>
<select id="testBind">
<bind name="likeName" value="'%' + name + '%'"/>
SELECT
name,
category,
price
FROM
fruits
WHERE
name like #{likeName}
</select>
</mapper>
test.py
Get All SQL Statements from Mapper
import mybatis_mapper2sql
mapper, xml_raw_text = mybatis_mapper2sql.create_mapper(xml='test.xml')
statement = mybatis_mapper2sql.get_statement(mapper, result_type='raw', reindent=True, strip_comments=True)
print(statement)
SELECT name,
category,
price
FROM fruits
WHERE category = ?
AND price > ?;
SELECT name,
category,
price
FROM fruits
WHERE category = ?;
SELECT name,
category,
price
FROM fruits
WHERE 1=1
AND category = ?
AND price = ?
AND name = 'Fuji';
SELECT name,
category,
price
FROM fruits
WHERE category = 'apple'
OR price = 200;
SELECT name,
category,
price
FROM fruits
WHERE category = 'apple'
AND price = ?;
UPDATE fruits
SET category = ?,
price = ?
WHERE name = ?;
SELECT name,
category,
price
FROM fruits
WHERE name = ?
AND category = ?
AND price = ?
AND category = 'apple';
SELECT name,
category,
price
FROM fruits
WHERE categy = 'apple'
AND (name = ?
OR name = ?);
INSERT INTO fruits (name, category, price)
VALUES (?,
?,
?) , (?,
?,
?);
SELECT name,
category,
price
FROM fruits
WHERE name like ?;
Get SQL Statement By SQLId
import mybatis_mapper2sql
mapper, xml_raw_text = mybatis_mapper2sql.create_mapper(xml='test.xml')
statement = mybatis_mapper2sql.get_child_statement(mapper,'testForeach', reindent=True, strip_comments=False)
print(statement)
SELECT name,
category,
price
FROM fruits
WHERE categy = 'apple'
AND ( name = ? -- if(name == 'Jonathan' or name == 'Fuji')
OR name = ? -- if(name == 'Jonathan' or name == 'Fuji')
)
Running the tests
python setup.py test
Known Limitations
- Doesn't support custom parameters
- All sql parameters will be replace to '?'
- All of the conditionals to apply in <if> <choose> <when> <otherwise> element
Acknowledgments
This project was inspired by the following projects and websites:
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