Modify Stored Procedures in MyBatis

1 year ago
Liam
2 minutes

To modify a stored procedure, you first need to locate its definition and then make changes to it. In MyBatis, you can use SQL queries to call stored procedures, and modify them by calling them in this way.

Here is a sample code demonstrating how to use MyBatis to call a stored procedure and modify it.

  1. Create an interface and mapping file for a stored procedure.
public interface MyProcedureMapper {
    void callMyProcedure(Map<String, Object> parameters);
}

<?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="com.example.MyProcedureMapper">
    <select id="callMyProcedure" statementType="CALLABLE">
        { call my_procedure(#{param1, mode=IN, jdbcType=INTEGER}, #{param2, mode=IN, jdbcType=VARCHAR}, #{outParam, mode=OUT, jdbcType=INTEGER}) }
    </select>
</mapper>
  1. Write Java code to call a stored procedure.
SqlSession sqlSession = sqlSessionFactory.openSession();
MyProcedureMapper myProcedureMapper = sqlSession.getMapper(MyProcedureMapper.class);

Map<String, Object> parameters = new HashMap<>();
parameters.put("param1", 123);
parameters.put("param2", "abc");
parameters.put("outParam", null);

myProcedureMapper.callMyProcedure(parameters);

Integer outParamValue = (Integer) parameters.get("outParam");
System.out.println("Output parameter value: " + outParamValue);

sqlSession.close();

In this example, we defined a stored procedure called my_procedure and then accessed and modified it using MyBatis. It is important to note that the process of updating a stored procedure may vary, and adjustments should be made according to the definition of the stored procedure and specific requirements.

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