Equivalent events to ObjectMaterialized and SavingChanges in EF Core?

[user100003]

Hi,

On EF6, we hook into the ObjectMaterialized and SavingChanges events very easily to perform some DateTime transformations that are required for sharing the DB with other applications.

Considering the ObjectContext API isn't there in EF7, what are the equivalent events to ObjectMaterialized and SavingChanges in order to achieve the same functionality?

// EF6.x example, db is type DbContext
ObjectContext context = ((IObjectContextAdapter)db).ObjectContext;
context.ObjectMaterialized += DateTimeReadTransform;
context.SavingChanges += DateTimeWriteTransform;

Thanks

[rowanmiller]

This is being tracked by #626. It won't be in our November RC, but you can override SaveChanges to run your own logic before save. It should also be possible to override some low level components in DI to intercept when an object is materialized (it would be complex, but may be a way to unblock you if needed).

[user100003]

@rowanmiller Thanks for the update and appreciate your suggestions. For now, we're holding off switching to EF7 (still on EF6) since the workaround suggested would be rather klunky.

#626 is good but the concern is that it's a more complex requirement, delaying the engineering, testing and final release as compared to this sub-set of requirements (just two hooks).

If not Nov-RC, are there any best guesses on when (to nearest month or quarter) this feature (perhaps in it's basic form) will be making an RC?

[rowanmiller]

@user100003 I don't have a definite answer for you as we haven't really done any prioritization of features post the initial RTM. That said, this is a fairly fundamental requirement and so I think we'll prioritize it pretty quickly after initial release.

[marchy]

+1

[TehWardy]

same here ... looks like bot htis ticket and #626 have stopped ... is this going anywhere?
I'd like to see this in EF 6 too though if possible as performing upgrade right now would cause hell for me.

I have been using jcachat/dynamicfilters package which is sort of a good step but has some interesting problems due to the lack of "good hooks" in core EF.

Here's that other package ...

https://github.com/jcachat/EntityFramework.DynamicFilters