.NET CodeFirst Entity Framework: uniqueidentifier as collumn discriminator in TPH mapping

Question

0.00/5 (No votes)

See more:

Hello, I'm trying to use uniqueidentifier collumn as discriminator for TPH mapping of objects.
Fluent code configuration is like this:

C#

Map<ImplementationDocument>(m => m.Requires("DocumentType_ID").HasValue(Guid.Parse("A83EC21A-5661-462E-9539-F889F3BA2B5B"))).
           Map<WarrantyDocument>(m => m.Requires("DocumentType_ID").HasValue(Guid.Parse("E4A8F66F-E82D-E011-9483-00151710A8AC"))).
           Map<InvoiceDocument>(m => m.Requires("DocumentType_ID").HasValue(Guid.Parse("821BC287-E82D-E011-9483-00151710A8AC")));

As a result I'm getting mapping exception:
error 2016: Condition can not be specified on values of member 'DocumentType_ID'. Value conditions are not supported for type 'SqlServer.uniqueidentifier'.

Does it mean that this mapping scenario is totally impossible?

Posted 27-Jun-13 18:39pm

Dmitriy Korn

Updated 27-Jun-13 18:47pm

v2

Add a Solution

1 solution

Add a Solution

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dmitriy Korn · Accepted Answer · 2013-06-27T20:23:00

Ok, so the right configuration is following,I should simply give string values instead of parsed guid:

VB

Map<ImplementationDocument>(m => m.Requires("DocumentType_ID").HasValue("A83EC21A-5661-462E-9539-F889F3BA2B5B")).
            Map<WarrantyDocument>(m => m.Requires("DocumentType_ID").HasValue("E4A8F66F-E82D-E011-9483-00151710A8AC")).
            Map<InvoiceDocument>(m => m.Requires("DocumentType_ID").HasValue("821BC287-E82D-E011-9483-00151710A8AC"));

.NET CodeFirst Entity Framework: uniqueidentifier as collumn discriminator in TPH mapping

1 solution

Solution 1

Add your solution here

Preview 0

.NET CodeFirst Entity Framework: uniqueidentifier as collumn discriminator in TPH mapping

1 solution

Solution 1

Add your solution here

Preview 0

Existing Members

...or Join us