Resolved #3176: Add Initialize method for the AbpDbContext (EF Core).

Also moves some initialization code from UnitOfWorkDbContextProvider to AbpDbContext.

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/AbpDbContext.cs

@@ -28,7 +28,7 @@ using Volo.Abp.Uow;
 
 namespace Volo.Abp.EntityFrameworkCore
 {
-    public abstract class AbpDbContext<TDbContext> : DbContext, IEfCoreDbContext, ITransientDependency
+    public abstract class AbpDbContext<TDbContext> : DbContext, IAbpEfCoreDbContext, ITransientDependency
         where TDbContext : DbContext
     {
         protected virtual Guid? CurrentTenantId => CurrentTenant?.Id;
@@ -144,6 +144,19 @@ namespace Volo.Abp.EntityFrameworkCore
             }
         }
 
+        public virtual void Initialize(AbpEfCoreDbContextInitializationContext initializationContext)
+        {
+            if (initializationContext.UnitOfWork.Options.Timeout.HasValue &&
+                Database.IsRelational() &&
+                !Database.GetCommandTimeout().HasValue)
+            {
+                Database.SetCommandTimeout(initializationContext.UnitOfWork.Options.Timeout.Value.TotalSeconds.To<int>());
+            }
+
+            ChangeTracker.CascadeDeleteTiming = CascadeTiming.OnSaveChanges;
+            ChangeTracker.DeleteOrphansTiming = CascadeTiming.OnSaveChanges;
+        }
+
         protected virtual EntityChangeReport ApplyAbpConcepts()
         {
             var changeReport = new EntityChangeReport();

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/AbpEfCoreDbContextInitializationContext.cs

@@ -0,0 +1,14 @@
+using Volo.Abp.Uow;
+
+namespace Volo.Abp.EntityFrameworkCore
+{
+    public class AbpEfCoreDbContextInitializationContext
+    {
+        public IUnitOfWork UnitOfWork { get; }
+
+        public AbpEfCoreDbContextInitializationContext(IUnitOfWork unitOfWork)
+        {
+            UnitOfWork = unitOfWork;
+        }
+    }
+}

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/IAbpEfCoreDbContext.cs

@@ -0,0 +1,7 @@
+namespace Volo.Abp.EntityFrameworkCore
+{
+    public interface IAbpEfCoreDbContext : IEfCoreDbContext
+    {
+        void Initialize(AbpEfCoreDbContextInitializationContext initializationContext);
+    }
+}

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/Uow/EntityFrameworkCore/UnitOfWorkDbContextProvider.cs

@@ -54,15 +54,15 @@ namespace Volo.Abp.Uow.EntityFrameworkCore
             {
                 var dbContext = CreateDbContext(unitOfWork);
 
-                if (unitOfWork.Options.Timeout.HasValue &&
-                    dbContext.Database.IsRelational() &&
-                    !dbContext.Database.GetCommandTimeout().HasValue)
+                if (dbContext is IAbpEfCoreDbContext abpEfCoreDbContext)
                 {
-                    dbContext.Database.SetCommandTimeout(unitOfWork.Options.Timeout.Value.TotalSeconds.To<int>());
+                    abpEfCoreDbContext.Initialize(
+                        new AbpEfCoreDbContextInitializationContext(
+                            unitOfWork
+                        )
+                    );
                 }
 
-                dbContext.ChangeTracker.CascadeDeleteTiming = CascadeTiming.OnSaveChanges;
-                dbContext.ChangeTracker.DeleteOrphansTiming = CascadeTiming.OnSaveChanges;
                 return dbContext;
             }
         }