Question

I am using EF 4 (database first, model fully generated from it) with an oracle 10g database and I have a problem with one field.

My field is defined as a NUMBER(5) in my database. In my model, EF has defined it as a short.
My problem is that i have some values that are greater than 32,767 (max of a short)
I found this post : Entity Framework generates short instead of int. I follow the instruction and it works, my model contain now Int32 values.

But I have a new problem :

Error 2019: Member Mapping specified is not valid. The type 'Edm.Int32[Nullable=True,DefaultValue=]' of member 'XX' in type 'Model.XXX' is not compatible with 'OracleEFProvider.number[Nullable=True,DefaultValue=,Precision=5,Scale=0]' of member 'XX' in type 'Model.Store.XXX'.

This error is always show in the Error List tab of Visual Studio. However, the build success, and it half works:

• read a value in database works
• write a value do not work : 99999 was transformed in -31073 (see edit)

Is there a solution to have it works on both ways ?

BTW, is there any way to tell entity to use int32 for oracle INTEGER fields ? It use decimal by default.

EDIT

While debuging step by step, I found why my value was -31073. I forgot this line :

dao.Value = (short)dto.Value;

My two values were int, but the implicit conversion in short was the origin.

Answer 1

I found how to remove the error.

I edited the edmx file in xml mode, found my field in the ssdl section :

<Property Name="SIT_INSEE" Type="number" Precision="5" />

I removed the Precision="5" and the warning disappeared.