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Re: [dali-dev] Dali 2.0 - how do I retrieve default OrmXml?
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If you use the API mappingFileRefs() rather than
specifiedMappingFileRefs(), then the implied orm.xml, *if it exists* and
if not specified otherwise, should be in there. This *might* be newish
functionality.
Paul Fullbright
Oracle Corp.
Eclipse Dali/Java Persistence Tools Development
paul.fullbright@xxxxxxxxxx
Tom Mutdosch wrote:
Hi there,
One more question along these lines -- sorry ;)
In the snippet you sent, the OrmXml is being retrieved via:
for (Iterator<MappingFileRef> mappingFiles =
persistenceUnit.mappingFileRefs(); mappingFiles.hasNext();) {
But that seems to only retrieve mapping files explicitly listed in the
persistence.xml. By default, the orm.xml is not listed there. Should
the default /META-INF/orm.xml be being returned via the API in this
case as well, since it does not need to be specified in the
persistence.xml? Or is there another mechanism to get the default
OrmXml model?
Thanks
Tom
Tom Mutdosch wrote:
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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