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Simple EMF model persistence to database? [message #1835995]

Thu, 17 December 2020 16:30

Eclipse User

Dear all,

I am considering using EMF for a project where I need code generation.

The models need to be persisted in a (Posgres) database.

Is there a simple way to do that? I came across Teneo, but it looks unmaintained. The last update was in 2017 and it requires an old version of Hibernate (<5.0).

I also read about CDO, but it does way to much (and thus especially has too much performance implications).

Does anyone have a suggestion?

Thanks in advance.

Re: Simple EMF model persistence to database? [message #1836009 is a reply to message #1835995]

Fri, 18 December 2020 03:11

Eclipse User

Hi Jens,
We are using CDO for our project since four years with two DB backend : H2 and PostgreSQL.

Overall performances are good enougth.
There are some performances differences between H2 and PostgreSQL.

For the recovery of certain data we go directly through database SQL queries.
--
Philippe

[Updated on: Fri, 18 December 2020 03:11] by Moderator

Re: Simple EMF model persistence to database? [message #1836529 is a reply to message #1835995]

Wed, 06 January 2021 18:13

Eclipse User

EMF has built in support to serialize to XML. If your models aren't too large, you could convert to XML, store it in the database, and then when you read it back EMF can load the data model from XML.

If you have large models however this could be slow. In this case if you only want to load specific data CDO is the way to go.

Re: Simple EMF model persistence to database? [message #1837621 is a reply to message #1836529]

Wed, 03 February 2021 05:33

Eclipse User

Thanks a lot for your answers. Sadly, decision was made against EMF in general for the project in question, so this thread can be closed.

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