ObjectBox FAQ

Feedback & Support

I have feedback for you…
Great! Let us know how we are doing and where we can improve the ObjectBox database. Drop us a line here: contact [at] objectbox.io.

I need help…
Did you check the documentation (Java, Go, Swift)? We try to make our documentation as extensive as possible, but it’ll always be work-in-progress. If you did not find what you need, please post a question on Stack Overflow using the tag [objectbox]. Our team is monitoring this tag.

I think I found a bug…
Please search the issue tracker (Java, Swift, Go, C) for existing bugs. If you do not find it, please open a new issue. Usually, it helps us a lot if you can narrow the issue down a bit and have a reproducible example.

I really need feature xyz…
We also track features requests on the issue tracker(Java, Swift, Go, C). Please make sure you do a quick search on the existing issues to check if the feature was requested before. If that is the case, a simple “+1” helps us understand its importance.

How can I help?
We’re still a small team and you can help us by providing feedback, getting in touch, providing help and tutorials to the community, recommending us to other developers, and last not least: Tweets, shares, and likes are always appreciated a lot too. 🙂

Technical (general; check language FAQ for specifics)

Does ObjectBox support object relations?
Yes. ObjectBox comes with strong relation support and offers features like “eager loading” for optimal performance.

Is ObjectBox a “zero copy” database?
It depends. Internally and in the C API, ObjectBox does zero-copy reads. Language objects (Java, Go Swift) require a single copy only.

Are there any threading constrictions?
No. The objects you get from ObjectBox are plain objects without any strings attached. You are safe to pass them around in threads.

On which platforms does ObjectBox run? Which programming languages are supported?
Android (4.0 and above), Linux (64 bit), Windows (64 bit), macOS (alpha), iOS (alpha). ObjectBox comes in flavors for Java, Go, C, and Swift (alpha).

Can I use ObjectBox on the desktop/server?
Yes, you can ObjectBox on the desktop/server side. Contact us for details if you are interested in running ObjectBox in client/server mode or containerized!

Can I use ObjectBox on smart IoT devices?
Yes, you can run the ObjectBox database on any IoT device that runs Linux (or one of the other supported platforms).

How do I rename object properties or classes?
If you only do a rename on the language level, ObjectBox will by default remove the old and add a new entity/property. To do a rename, you must specify the UID. Check the language specific docs how to do so.

License / Open Source

We strongly believe in Open Source. With greenDAO and EventBus we have been contributing to open source for years. Therefore, we open sourced the ObjectBox language bindings under the Apache 2.0 license. We think it is the most interesting part for developers. We will open source more components later, but first we need to figure out some things with ObjectBox. Please give us time on this. We’re currently putting all our efforts in advancing the product. Please contact us if you have questions about this (contact [at] objectbox.io). Thank you.

The current license is temporary only. We will adjust it to be easier and more pragmatic as soon as we can. If you see issues with the current license, please contact us. We’re sure, we can figure it out. We want you to succeed with ObjectBox, and the license should not be an issue.

Pricing

ObjectBox is a free database. We will roll out additional commercial services / products related to ObjectBox in the future. The ObjectBox database will always be free.

Example for commercial services we might offer:

  • Implementing features on top of the database that could be beneficial for your app and solve challenges you might have. Check out sync.
  • Training and support: to get you started asap, we can come in and help you integrating ObjectBox in your specific context. If you need professional support agreements, we can help.
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