primitive array resultType throws exception

[hoomanv]

This issue has been reported previously at #259 and fixed.
But I think it is still broken.
mybatis version= 3.3.0

I have
   int[] getValues(...
mapped to
   <select id="getValues" resultType="int">

I get this exception
Caused by: java.lang.ClassCastException: [I cannot be cast to [Ljava.lang.Object;
   at org.apache.ibatis.binding.MapperMethod.convertToArray(MapperMethod.java:144)

At line 144 of MapperMethod.java you are trying to cast int[] to Object[] since E resolves to Object
E[] array = (E[]) Array.newInstance(method.getReturnType().getComponentType(), list.size());

[harawata]

Well, there is a test case for #259 and it's passing, so could you please provide a test case in the spirit of SSCCE ?

[hoomanv]

Let me first explain it through the code.

I believe that the following method resolves E to java.lang.Object

115: private <E> Object executeForMany(SqlSession sqlSession, Object[] args) {

That leads to the following method

143: private <E> E[] convertToArray(List<E> list) {

And finally at 144 everything is cast to Object[]

I got this exception in jre8.u60

[harawata]

Oh, I think you are trying to get an array from a select mapper method, but MyBatis cannot do that, unfortunately.
You may have to 1) change the return type to List<Integer> and convert it to an array in your class or 2) use ResultHandler.

#259 is about mapping an array to a bean property using <association /> element and it could be another option as well.

Hope this helps,
Iwao

[harawata]

Correction. MyBatis can return array of Object, but not array of primitive.
I will keep this open as an enhancement request.