[forge-dev] Approach to Spring Boot handling JPA

[George Gastaldi]

Hi Ivan,

JPAFacet depends on having a PersistenceCommonDescriptor 
(https://github.com/forge/core/blob/master/javaee/api/src/main/java/org/jboss/forge/addon/javaee/jpa/JPAFacet.java#L27), 
so I guess that extending JPAFacet is not a good idea in this case. Is 
it a problem if the persistence.xml is created for a Spring Boot project?

Otherwise, I'd suggest you to create the SpringBootJPAFacet without 
reusing the JavaEE ones (and create a "Spring Boot: JPA Setup"), as they 
really don't follow JavaEE in this context beyond the JPA JARs.

Best Regards,

George Gastaldi

On 07/26/2015 05:52 PM, Ivan St. Ivanov wrote:
> Hi folks,
>
> As some of you probably heard, in Bulgarian JUG we are going to adopt 
> an addon (as George put it a couple of months ago). Beginning of 
> August we are going to develop a Forge extension for Spring Boot. One 
> of the things that we are not sure yet how to tackle is persistence.
>
> You see, Spring supports JPA. However instead of configuring it in the 
> Java EE way with persistence.xml, in Spring Boot they use a properties 
> file for that (and for all their configuration). The current JPA facet 
> implementations however are developed with presistence.xml in mind. 
> The JPA setup wizard itself is also bound somehow to presistence.xml - 
> it picks the facet to install based on that file.
>
> What we want to do is not to rewrite all the Forge commands for JPA 
> just because of the fact above. We were thinking of a small change - 
> extend JPAFacet with SpringBootJPAFacet. And then add a new 
> implementation of PersistenceContainer -> SpringBootContainer or 
> something? And then we have to change JPASetupWizardImpl to pick the 
> facet not only based on the JPA version, but also based on the container.
>
> Or maybe there is a better way?
>
> I am expecting your feedback :)
>
> Cheers,
> Ivan
>
>
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