Re: [dali-dev] Re: help with Dali 2.0 model migration - how do I now get

[Tom Mutdosch <tommut@xxxxxxxxx>]

Hi Karen,

I tried the getEntities() code snippet that you had sent me, and it 
works mostly but does not do exactly what I expected.  That seems to 
only retrieve entities that are listed directly in the persistence.xml 
file, and not annotated Java entities that aren't explicitly listed.  We 
actually discovered this due to an apparent timing bug where immediately 
after the Generate Entities wizard was run we called our getEntities() 
method and it was not returning the new entity classes.  (Aside:  it 
looks like there's a separate timing issue here where the entities were 
not yet updated in the persistence.xml; Is the synchronizeClasses run as 
a separate Job after GenerateEntities?)

In any case, is there a way to do a similar getEntities() call that gets 
entities from the Dali model whether they are listed in the 
persistence.xml or not?  It looks like calling 
jpaProject.annotatedClasses() returns all of the entities as ITypes, so 
it seems they are stored in the model somehow - I'm just not sure how to 
appropriately get all of the PersistentTypes.

Thanks
Tom


Karen Moore wrote:
> I agree, the code to get a list of entities is a bit convoluted and 
> difficult to find.  We've had other adopters ask us for this as well, 
> so documentation on the existing API or helper API is the way to go.  
> Thanks for your feedback!
>
> Karen
>
> Tom Mutdosch wrote:
>
> > Hi Karen,
> >
> > Thanks for the details; I definitely understand all the complexities 
> > in providing various API to suit every possible need.  I have no 
> > problem writing a getEntities() method myself.  The main reason I 
> > suggested it was that it wasn't totally obvious how to do that using 
> > the existing APIs.  I figured others might have the same 
> > difficulties, so a new API call could address that.  But having 
> > documentation or examples of how to do some of these common 
> > operations would probably help achieve the same effect, so maybe it's 
> > not a big deal.
> >
> > Regarding saving the OrmXML and PersistenceXML models, thanks for the 
> > code snippets - that's what I was looking for.  I opened an 
> > enhancement request with my particular usecase: 
> > https://bugs.eclipse.org/bugs/show_bug.cgi?id=223197
> >
> > Thanks again,
> > Tom
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