When the parameter name is "size", it is always mapped with integer

[onozaty]

MyBatis version

• MyBatis 3.4.4
• MyBatis Spring Boot Starter 1.3.0

Database vendor and version

H2 1.4.194

Test case or example project

https://github.com/onozaty/sandbox-java/tree/master/mybatis-size-mapping-error

Steps to reproduce

I will create the following repository, call insert method. The parameter size is of type long.

package com.example.demo;

import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

@Repository
@Mapper
public interface TestRepository {

    @Insert("INSERT INTO test(number, size) VALUES(#{number}, #{size})")
    public void insert(@Param("number") long number, @Param("size") long size);
}

Expected result

The call will succeed.

Actual result

An exception is raised.
size parameter is mapped to java.lang.Integer.

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='size', mode=IN, javaType=int, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #2 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
	at com.sun.proxy.$Proxy53.insert(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:57)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
	at com.sun.proxy.$Proxy59.insert(Unknown Source)
        ...

Changing the parameter name to size2 will succeed.

[kazuki43zoo]

@onozaty Thanks for your report!!

MyBatis use the HashMap#size instead of @Param("size") long size in this case.

[kazuki43zoo]

@onozaty I've fixed this. You can use the 3.4.5-SNAPSHOT for applying this fix.

[onozaty]

@kazuki43zoo Thank you! I confirm the 3.4.5-SNAPSHOT.