Data store command interception

Is there any extensible point on where EF hits the db, something that can be overridable to log or do anything everytime a hit to the db.

im wondering of something like

override OnDatabaseHit(Operation op, Context context) {
     if (typeof(op) == Query | SaveChanges | ... {
         Console.WriteLine(context.Query)
     }
}

if not, take it as a suggestion for EF7 😃

[tourili]

Hi there What about Intercepting connection level to support Row Level Security. I checked the latest release, but still not supported yet. I’m working around this lack by connecting the legacy handler Database.GetDbConnection().StateChange to monitor the connection state in order to inject my session context:

this.Database.GetDbConnection().StateChange += (s, e) =>
{
    if (e.OriginalState != System.Data.ConnectionState.Open && e.CurrentState == System.Data.ConnectionState.Open)
    {
        DbCommand cmd = this.Database.GetDbConnection().CreateCommand();
        cmd.CommandText = "EXEC sp_set_session_context @key=N'ObjectId', @value=@UserId";
        ....
    }
};

on a derived DbContext constructor.

I would like to see a better approach using DI to pipe this injection? Thanks

[wpostma]

I put a question on stack-overflow to seek alternative techniques for EF Core.

http://stackoverflow.com/questions/37660746/can-i-configure-an-interceptor-yet-in-entityframework-core

Instead of a heavyweight framework approach perhaps whatever replaces interceptors could be a very lightweight and simple pattern.