|Re: persisting EObjects on the web server (custom resourceSet or jpa/jdo annotations or something el [message #754115 is a reply to message #754112]
||Mon, 31 October 2011 21:01
| Martin Taal
Registered: July 2009
There are several options:
- Texo: http://wiki.eclipse.org/Texo which generates pojo's with jpa annotations/orm from ecore/xsd models, the
generated code are real pojos and can be persisted in a standard jpa way, it also provides emf back/from pojo
conversion, so great for webserver environments but it won't work with generated EMF editors (although rcp data binding
should work fine with Texo pojos also)
- Teneo: http://wiki.eclipse.org/Teneo/Hibernate which persists native EMF generated code using Hibernate, it can be
used within webserver environments as well as in the rcp (generated emf editors).
- CDO: http://wiki.eclipse.org/CDO: use cdo for the RCP's (emf generated editors) and just treat the web server google
app engine as another cdo client. CDO also has a hibernate store (http://wiki.eclipse.org/CDO_Hibernate_Store)
On 10/31/2011 09:11 PM, Tom H wrote:
> I have been using the ecore tools for generating my java objects, and I have been using a ResourceSet to persist my
> objects for development, however for live persistence I have not yet moved from the old school DAO pattern, where there
> is a DAO object which is a layer to a quite hard coded set of SQL statements.
> I have been asked to migrate some projects to the Google App Engine platform, that have their models stored as ecore.
> I have a fairly clear field to choose from here, but I am quite confused as to what I should be considering as an option.
> It looks possible to generate JPA/JDO annotations for each of modelled classes and not use any of the
> Factory/Package/Resourceset functionality of EMF.
> It seems that following that route though loses all the cool generated editor code, because none of them will be able to
> persist to the google datastore directly, or at least will require a data layer to do so.
> Any suggestions on how to proceed would be appreciated
With Regards, Martin Taal
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