Re: [eclipselink-users] Moxy & JPA with Eclipselink

[Adam Stroud <adam.stroud@xxxxxxxxx>]

Blaise:

Not just yet, but I would expect those to be useful later on.  I will
keep you posted.

Adam

Blaise Doughan wrote:
> Hi Adam,
> 
> Good to hear.  I have just updated the JPA/JAXB example (see link below)
> to include the bidirectional OXM relationship mapping support we've
> added to EclipseLink 2.0.  Next I will add updates for composite keys
> and embedded key classes, are you using either of these concepts in your
> model?
> 
>     http://wiki.eclipse.org/EclipseLink/Examples/MOXy/JPA
> 
> -Blaise
> 
> Adam Stroud wrote:
>> Blaise:
>>
>> I actually just stumbled upon the schema generation functionality.  I
>> will give that a try and see how far I get.
>>
>> Thanks
>> Adam
>>
>> Blaise Doughan wrote:
>>   
>>> Hi Adam,
>>>
>>> You are correct, the JAXB annotations will allow you to map the JPA
>>> entity classes to XML.  This will require you only have one Java model.
>>>
>>> You can generate an XML schema from annotated Java classes using the
>>> generateSchema(SchemaOutputResolver) method on JAXBContext:
>>>
>>>     * http://java.sun.com/javase/6/docs/api/javax/xml/bind/JAXBContext.html#generateSchema(javax.xml.bind.SchemaOutputResolver)
>>>
>>> Using EclipseLink 2.0 JAXB you will also be able to:
>>>
>>>     * Map bidirectional relationships using @XmlInverseReferece
>>>     * Use composite keys in key based XML relationships
>>>     * Map JPA entites with embedded key classes
>>>     * Use the @XmlID annotation on non-String fields and Properties
>>>
>>>
>>> -Blaise
>>>
>>> Adam Stroud wrote:
>>>     
>>>> Blaise:
>>>>
>>>> Thanks for the reply.  I have not come across any issues yet as I have
>>>> just started development.  I am developing a RESTful web service that
>>>> will receive XML that will need to be mapped to JPA entities that will
>>>> be persisted.  My initial thought was to create an XSD to define the web
>>>> service traffic, and run JAXB over this to create Java classes.  I would
>>>> then define the entities to be persisted and manually write the code to
>>>> convert the XML to the entities.  This just didnt feel right so I
>>>> started to see if there was a better way.  It seems that the JAXB
>>>> annotations might be what I am looking for.  From what I have seen thus
>>>> far, I will be able to both marshal and unmarshal the XML into my
>>>> entities.  The only feature I would still like to have is the XSD.  It
>>>> does not look like I can generate an XSD from JAXB annotated classes.
>>>> So, if I want the XSD it looks like I need to maintain multiple models.
>>>>  Any other ideas?
>>>>
>>>> Thanks
>>>> Adam
>>>>
>>>> Blaise Doughan wrote:
>>>>   
>>>>       
>>>>> Hi Adam,
>>>>>
>>>>> My apologies for not getting back to the thread.  If you let me know the
>>>>> issues you are encountering I will help you out.
>>>>>
>>>>> You should be able to do this in one model.  Below is a link to an
>>>>> example I am working on to do just what you are describing with the
>>>>> EclipseLink 2.0 APIs:
>>>>>
>>>>>     * http://wiki.eclipse.org/EclipseLink/Examples/MOXy/JPA
>>>>>
>>>>> It is still a work in progress, some other things you will find useful:
>>>>>
>>>>>     * /*Bidirectional Relationship Support*/
>>>>>       Today we will be checking in an XMLInvereseReferenceMapping, this
>>>>>       mapping will allow you map back pointers.
>>>>>     * /*Composite Key Support*/
>>>>>       EclipseLink 2.0 now supports composite keys on all the key based
>>>>>       mappings.  I still need to update the example with this.
>>>>>
>>>>> -Blaise
>>>>>
>>>>> Adam Stroud wrote:
>>>>>     
>>>>>         
>>>>>> All:
>>>>>>
>>>>>> I am developing an application that uses Eclipselink both JAXB (Moxy)
>>>>>> and JPA.  My question is what is the best way to go from my current
>>>>>> data model to entities and XML without maintaining three different
>>>>>> models.  I saw an earlier post to the mailing list here ->
>>>>>> http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03473.html,
>>>>>> but it does not look like the examples referenced in the reply were
>>>>>> posted to the list.  Any input/guidance would be appreciated.
>>>>>>
>>>>>> Thanks
>>>>>> Adam
>>>>>> _______________________________________________
>>>>>> eclipselink-users mailing list
>>>>>> eclipselink-users@xxxxxxxxxxx
>>>>>> https://dev.eclipse.org/mailman/listinfo/eclipselink-users
>>>>>>   
>>>>>>       
>>>>>>           
>>>>   
>>>>       
>>
>>