realm-java

What part of it is closed source? https://github.com/realm/realm-cocoa https://github.com/realm/realm-java https://github.com/realm/realm-js https://github.com/realm/realm-dotnet Edit: Apparently not the guts of it, my bad :(

With all respect to Kevins benchmarks. There are many ways to measure performance and most of them are wrong. If you see the talk he even admit that his numbers changed quite a bit between each benchmark run. From what we see, we are generally faster than raw SQLite on all metrics except when doing batch inserts. This is primarily an API problem, because our low-level access is 200-300% faster than SQLite (which Kevin also mentions). It is something we are well aware of and plan to address quickly after 1.0: https://github.com/realm/realm-java/issues/1684 Our own numbers are here: http://www.slideshare.net/ChristianMelchior/realm-building-a... including a link to the code

No, the change notifications will work across processes as well. Realm Java still need to add multi-process support though (https://github.com/realm/realm-java/issues/1091), but it is working in Realm Swift/Objective C.

Yes, thinking about the internal structure as a graph will give you the right ideas. We don't have support for collecting objects bottom up yet, bu t it is tracked here: https://github.com/realm/realm-java/issues/2232 Realm Swift/Objective C has support for bi-directional references and we are adding that to Realm Java shortly as well: https://github.com/realm/realm-java/issues/607 ..That will also help when doing bottom-up queries. If you want to know more about the internal details. There is some talks/articles here that might interest you: - https://realm.io/news/threading-deep-dive/ - https://realm.io/news/jp-simard-realm-core-database-engine/ - https://www.youtube.com/watch?v=vGFInG96KH4

Yeah we absolutely have a lot of work ahead of us (as mentioned in the post). And the issues you mention are tracked in https://github.com/realm/realm-java/issues. There you can also see that we got a lot more features we want to add than the few you mention :-) We strive to be very transparent about our limitations (http://realm.io/docs/java/0.80.0/#current-limitations) so that they at least don't surprise anyone. We seriously love to get the feedback so we can prioritize the additional features our users desire the most. That said, we are very encouraged to see that the current features satisfy a lot of "non-toy" apps as well and that many thousands developers are building new apps every week. You can see some of them mentioned here: http://realm.io/users/, and at the end of that page is also some unedited interviews with developers. /B

Thanks for the heads-up! We’ll get that fixed shortly. We do support JSON (and GSON) — you can see it at work in our gridViewExample (https://github.com/realm/realm-java/tree/master/examples/gri...)