Uwe (ObjectBox)

@VaiTon Not sure. Have you tried with `3.3.0`?

Is this maybe #914?

See if [my comment on Kotlin support helps](https://github.com/greenrobot/greenDAO/issues/395#issuecomment-304582750). -ut

You can supply any database that satisfies the `Database` interface requirements to `DaoMaster(db)`. Does that not work for you? https://github.com/greenrobot-team/greenrobot-examples/blob/master/greendao/app/src/main/java/com/example/greendao/ExampleApp.java

You can write a wrapper/helper class similar to [DatabaseOpenHelper](https://github.com/greenrobot/greenDAO/blob/master/DaoCore/src/main/java/org/greenrobot/greendao/database/DatabaseOpenHelper.java).

Check your `OpenHelper` implementation. Otherwise can't help without an example project and more details.

This appears to be an issue with your entity class. Can you show what it looks like?

This error message is a little cryptic @greenrobot. But what I can gather from [the migration documentation](http://greenrobot.org/greendao/documentation/updating-to-greendao-3-and-annotations/#Gradle_Plugin_Configuration) you have to add the schema version number to your `build.gradle` file (where...

To all above: you can continue [using greenDAO 2](https://github.com/greenrobot/greenDAO/tree/V2.2.1) without any issues. The [documentation for the generator](http://greenrobot.org/greendao/documentation/generator/) also remains available. -ut

Is this about #1002? What Gradle version are you using? We can't help if you don't share details required to fix any issues.