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POTPT and foreign key issue
primarykey
Id
3141433
data
AcceptedAnswerId
3142659
AnswerCount
1
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2010-06-29T14:05:34.680
FavoriteCount
0
LastActivityDate
2012-01-24T15:50:10.107
LastEditDate
2012-01-24T15:50:10.107
LastEditorUserId
102112
OwnerUserId
379079
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0
PostTypeId
1
Score
0
ViewCount
252
LastEditorDisplayName
text
Body
I have a problem with TPT inheritance + foreign key. I'm working on a web application with multi language support, including translating dynamic content. Here's my tables: <pre><code>Language ============= Id, Name ProcessingAgent ==================== Id, some other fields LocalizedProcessingAgent ========================================================= LocalizedProcessingAgentId, Name, Description, LanguageId </code></pre> As you already guessed, I moved the columns which should be translated from <code>ProcessingAgent</code> to <code>LocalizedProcessingAgent</code>. On EF side, I made a TPT inheritance, so <code>ProcessingAgent</code> is a base class of <code>LocalizedProcessingAgent</code>. I'm new to EF, this is my first project I moved on and one of it's strange behavior really confuses me. When I generate EF classes from DB, <code>LocalizedProcessingAgent</code> has a Navigation Property Language (Because of <code>LanguageId</code>). The problem is that <code>Language</code> property is null after I query the db: <pre><code>LocalizedProcessingAgentRecord l = db.ProcessingAgents .OfType<LocalizedProcessingAgentRecord>().First(p => p.Id == 1); //l.Language is null </code></pre> So the foreign key Navigation Property is not filled for some reason, I don't know why. This happens only when I query derived entities, in this case <code>LocalizedProcessingAgentRecord</code>. Any ideas? here's EF xml markup: <a href="http://dl.dropbox.com/u/3055964/ef.xml" rel="nofollow noreferrer">http://dl.dropbox.com/u/3055964/ef.xml</a>
Tags
<c#><entity-framework><entity>
Title
TPT and foreign key issue
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USAlex
UserOwnerUserId
1. USDavita
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

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