Hi Armin,
some comments inline Romain Manni-Bucau @rmannibucau <https://twitter.com/rmannibucau> | Blog <https://rmannibucau.metawerx.net/> | Old Blog <http://rmannibucau.wordpress.com> | Github <https://github.com/rmannibucau> | LinkedIn <https://www.linkedin.com/in/rmannibucau> 2018-01-11 11:19 GMT+01:00 Beda, Armin <[email protected]>: > Dear Sir or Madam, > > OpenJPA is being considered to be used for one of our projects by NTT > DATA, so I have some very specific questions about this product. Can you > please help me out? > > > > 1. We have the requirement for a project to implement databases > independently. Is it possible with your product? > This is what JPA and therefore openjpa offers yes > > > 2. Is there any material online which shows us some examples for > database integration with your product? > Does https://openjpa.apache.org/builds/2.2.0/apache-openjpa/docs/ref_guide_dbsetup_dbsupport.html match your request? > > > 3. Is database implementation possible with a Persistence Layer using > your product? > this is what is often done yes > > > 4. Can the database be changed or replaced anytime? > assuming you don't use the JPA feature of creating the database at runtime it is just a matter of switching the actual datasource at runtime at the same time than the dictionary, (Open)JPA is not even aware of it and it works > > > 5. What are the advantages of OpenJPA over EclipseLink, why should we > choose OpenJPA instead of EclipseLink? > OpenJPA tends to be closer to JPA spec and not use connection in a silent way in a context which is unexpected. it also doesnt' activate cache by default which avoid consistency issues without any config. That said both are implementations hidden behind JPA API so experience is close. > > > > 6. Are there any functions in your product that you are seriously > planning to improve in the next years? > > I guess it was part of the form you have to fill but doesnt make much sense in the context of an implementation of a spec I fear since there will be no new spec version next year. > > > 7. What are you planning to change in the next years to decrease > security risks of your product? > Hmm, we follow security issues and fix them a fast as possible so tempted to say "trying to stay reactive". > > > I really appreciate your help. ☺ > Hope it helped > > > Liebe Grüße | Best Regards | 敬具 > > > Armin Beda | Dualer Student | NTT DATA Deutschland > Ludwig-Erhard-Straße 2 - 76275 Ettlingen, Deutschland | Tel: > +4972435701301 | [email protected]<mailto:[email protected]> | > Learn more at www.nttdata.com/de<http://www.nttdata.com/de> > > NTT DATA Deutschland GmbH > Geschäftsführung: Swen Rehders (Vorsitzender), Ilka Friese, Jens-Uwe Holz, > Dieter Loewe, Ralf Malter > Aufsichtsrat: Herbert Vogel (Vorsitzender) > Sitz und Amtsgericht: München HRB 51846 > > > > ______________________________________________________________________ > Disclaimer: This email and any attachments are sent in strictest confidence > for the sole use of the addressee and may contain legally privileged, > confidential, and proprietary data. If you are not the intended recipient, > please advise the sender by replying promptly to this email and then delete > and destroy this email and any attachments without any further use, copying > or forwarding. >
