I was able to achieve what I want using the edmx:CopyToSSDL=true
attribute:
<edmx:ConceptualModels>
<Schema ...>
....
<EntityType Name="Entity1">
<Key>
<PropertyRef Name="Id" />
</Key>
<Property Type="Guid" Name="Id" Nullable="false" annotation:StoreGeneratedPattern="None" />
<Property Type="String" Name="Name" Nullable="false" />
<a:MyNewProperty edmx:CopyToSSDL="true"
xmlns:a="http://schemas.tempuri.com/MyNewProperty">
True
</a:MyNewProperty>
</EntityType>
This way, the transformator that generates the SSDL
from the CSDL
copies the annotation over to the SSDL
, so I'm able to access it in the T4 template that generates the DDL SQL file.
If someone is going to use this in Entity Framework 5, please not that there is a bug (http://entityframework.codeplex.com/workitem/702), and you can workaround by using the old EDMX XML namespace:
<a:MyNewProperty edmxv2:CopyToSSDL="true"
xmlns:a="http://schemas.tempuri.com/MyNewProperty"
xmlns:edmxv2="http://schemas.microsoft.com/ado/2008/10/edmx">
True
</a:MyNewProperty>