EF Core: Owned types support

[Daniel-Svensson]

• Initial support for Owned Entities for one-to-one navigation properties (EF Core: Owned types support #500)
  • Owned entities without explicit keys are mapped to OpenRiaServices's [Complex Types]
  • Owned entities with explicit keys are generated as normal "Entities" but are automatically annotated with [Composition]
  • EFCore "Complex Types" introduced in EFCore 8.0 does not have any special handling, but works
• Add package README to OpenRiaServices.Server.EntityFrameworkCore

[Daniel-Svensson]

Note: It would probably be a good idea to write a line or two to the package readme about using DbService, Owned Types (and Complex Types).

Complex types works reasonable "well", they are discovered as "complex object" but do not get any metadata from EF Core configuration.
If you add attributes to the properties they will be discovered by reflection @SandstromErik

[Daniel-Svensson]

Things left to consider.

• If we don't add OwnedEntities as ComplexObjects we should probably infer [Composition] on them.

  • @erikoijwall I know you did a workaround with owned entities using the previous efcore release, do you have any thoughts

• Should we do something to "discourage" efcore "complex objects" since each usage are mapped to a "virtual type/class" so it can have different metada for each usage.

• We should add some more documentation ..

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
6 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud