Exact type conversions

[Michael Schall <mi...@gmail.com>]

While upgrading from v1.3.1 I have found some breaking changes in current
SVN. Hopefully this will help someone else out there upgrading.  I'm was
getting a "System.InvalidCastException: Specified cast is not valid." in the
DelegatePropertySetAccessor->ISet Members-> Set method.

I have a public enum:

    Public Enum ObjectStatus
        Inactive = -1
        Deleted = 0
        Active = 1
    End Enum

Objects have a Status property of this type.  This is stored as an smallint
in database.  When attempting to set the Status property with the value 1, I
get the above error.  The stack trace ends with:

System.Reflection.TargetInvocationException: Exception has been thrown by
the target of an invocation. ---> System.InvalidCastException: Specified
cast is not valid.
   at SetImplementation(Object , Object )
   at
IBatisNet.Common.Utilities.Objects.Members.DelegatePropertySetAccessor.SetValue.Invoke(Object
instance, Object value)
   at
IBatisNet.Common.Utilities.Objects.Members.DelegatePropertySetAccessor.Set(Object
target, Object value) in
C:\PROJECTS\Framework\src\IBatisNet.Common\Utilities\Objects\Members\DelegatePropertySetAccessor.cs:line
165

My SqlMap has the following result map:

        <resultMap id="FooResultMap" class="Foo">
             ...
            <result column="Status" property="Status" type="Int16"
dbType="smallint" />
             ...
        </resultMap>

If I switch the above enum to

    Public Enum ObjectStatus As Short 'Int16
        Inactive = -1
        Deleted = 0
        Active = 1
    End Enum

Or the resultMap to

        <resultMap id="FooResultMap" class="Foo">
             ...
            <result column="Status" property="Status" type="Int32"
dbType="smallint" />
             ...
        </resultMap>

Or turn off ReflectionOptimizer in SqlMap.config file

useReflectionOptimizer="false"

The code works fine.  By default(and suggestion of FxCop) Enum's have the
default datatype of Int32.  It must have something to do with the
Reflection.Emit code.

Re: Exact type conversions

[Gilles Bayon <ib...@gmail.com>]

The default underlying type of the enumeration elements is *int* and as your
enum don't have a type, iBATIS is right :-)

-- 
Cheers,
Gilles

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