I develop JSF web applications using JPA to manage databases.
I use EclipseLink with MySQL frequently in all most all web applications.
I have used ObjecDb (with the restricted licence) with JPA. It is very fast when compared to MySQL + EclipseLink. ObjectDB works very nicely with JPA as well.
But my issue is that I can not afford the ObjectDB licence as I am from a developing country where majority spend only 0.7 USD for a Lunch on average. (ObjectDB licence is £300 for a single server and £1,800 for site licence at this moment.)
I want to know is there any Object database which is compatible with JPA with an open source licence?