IObjectSpaceProvider Interface
Declares members implemented by Object Space Providers used by XAF to instantiate Object Spaces.
Namespace: DevExpress.ExpressApp
Assembly: DevExpress.ExpressApp.v26.1.dll
NuGet Package: DevExpress.ExpressApp
Declaration
Remarks
XAF uses an Object Space Provider to create Object Spaces. The following Object Space Provider types are included in XAF:
| Object Space Provider | Object Space | Application Builder Method |
|---|---|---|
| EFCoreObjectSpaceProvider<TDbContext> | EFCoreObjectSpace | AddEFCore |
| XPObjectSpaceProvider | XPObjectSpace | AddXpo |
| SecuredEFCoreObjectSpaceProvider<TDbContext> | SecuredEFCoreObjectSpace | AddSecuredEFCore |
| SecuredObjectSpaceProvider | SecuredXPObjectSpace | AddSecuredXpo |
| NonPersistentObjectSpaceProvider | NonPersistentObjectSpace | AddNonPersistent |
XAF applications configure Object Space Providers through the Application Builder’s ObjectSpaceProviders properties: IBlazorApplicationBuilder.ObjectSpaceProviders and IWinApplicationBuilder.ObjectSpaceProviders. When you create an application with the Template Kit, it registers Object Space Providers for the selected preset.
Refer to the following topic for instructions on how to add custom Object Space Providers to your application: Custom Object Space Provider.
Note
When multiple Object Space Providers are registered in the application, the ModuleUpdater.UpdateDatabaseAfterUpdateSchema method is executed multiple times, once for each registered Provider. In this method, before accessing an object of a particular type, check if the current Object Space supports this type using the IObjectSpace.CanInstantiate method.