Query latest models distinct by update_time

Goal

I’m converting a sqlite database to Realm and have a model that has fields are groupID and updated_time. I want to select all latest model in each group.

Expected Results

I expect to get the list that contains all latest model sorted by updated_time DESC.

Actual Results

RealmResult.distinct() is deprecated, RealmQuery.distinct() cannot make sure result is latest.

Steps & Code to Reproduce

I don’t have data right now @@

Code Sample

RealmResults<MyModel> realmResults = getRealm().where(MyModel.class)
					.notEqualTo(MyModel.GROUP_ID, 0)
					.notEqualTo(MyModel.IS_DELETED, 0)
					.findAllSorted(MyModel.LAST_UPDATE, Sort.DESCENDING);
			realmResults.distinct(MyModel.GROUP_ID); <<< Deprecated

Version of Realm and tooling

Realm version(s): 3.3.1

Realm sync feature enabled: no

Android Studio version: 2.3.3

Which Android version and device: Galaxy Note 5 Android 6.0.1

[Zhuinden]

Tricky question because core needs to be released.

Current core release is 2.8.3, and this would probably be in 2.9.0, which will need to show up in Realm-Java…

[Zhuinden]

This core PR got merged 3 hours ago which allows this use case to work, see https://github.com/realm/realm-core/pull/2644

This means it’ll need to be included in object store and then exposed in Java binding (probably just removing depreciation will be enough though)