Exposing list of currently tracked entities in session

Nik

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Jan 19, 2021, 5:58:42 AM1/19/21

to RavenDB - 2nd generation document database

Hi,

I had a similar question about 2 years ago so wondering if the stance on this topic might have changed.

Would it be possible to expose a list of entities tracked by a document session?

I am using reflection to get that list by accessing DocumentSession.DocumentsByEntity, but I'd prefer not to use such ugly workarounds : )

There might be different scenarios requiring this, I'll list 2:

- Before calling "SaveChanges()" do some operations based on tracked aggregate roots. For example, publish domain events held by the agg. roots, if there are any. Using the sessions before-save event would not work here as sometimes there is no change on the aggregate root but a related entity. There may be more scenarios why the built-in events do not suffice here and why it would be cleaner just to get a list of tracked entities.

- We load an entity by Id. Then another module we can't change tries to load the same entity by a uniquely constrained parameter. To prevent another DB request for the query we can look up the tracked entities if we already loaded the document.

Egor Shamanaev

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Jan 20, 2021, 4:58:11 AM1/20/21

to rav...@googlegroups.com

Hi

You can access to DocumentsById and DocumentsByEntity lists, see https://github.com/ravendb/ravendb/blob/2e6ffff56f862fcdecdb1c3f3334e43a08588234/test/FastTests/Client/Queries/Counters/BasicCountersQueries.cs#L85

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