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EMF Serialization in older XMI format [message #910918]

Mon, 10 September 2012 12:12

Eclipse User

How can I serialize an EMF (UML) model using one of the older XMI formats.

I need to export in XMI 2.1 to import into another tool, but my models are being
serialized as 2.4.1 format using the latest Juno.

Re: EMF Serialization in older XMI format [message #910921 is a reply to message #910918]

Mon, 10 September 2012 12:20

Eclipse User

Maybe XMIResource.setXMIVersion can help, but I suppose you need UML to
do it for you so please ask about UML on the eclipse.modeling.mdt.uml2
forum.

On 10/09/2012 6:12 PM, Ian Carr wrote:
> How can I serialize an EMF (UML) model using one of the older XMI
> formats.
>
> I need to export in XMI 2.1 to import into another tool, but my models
> are being
> serialized as 2.4.1 format using the latest Juno.

Re: EMF Serialization in older XMI format [message #910929 is a reply to message #910921]

Mon, 10 September 2012 12:39

Eclipse User

Hi

I thought this was asked previously on the UML2 newsgroup, but cannot
find the message.

MDT/UML2 supports backwards compatibility; reading old UML versions.

It does not support forwards compatibility; if you really want it, raise
a Bugzilla. But generally the rationale is that if you don't want UML
2.4.1 don't use it at all; install the older support.

Regards

Ed Willink

On 10/09/2012 17:20, Ed Merks wrote:
> Maybe XMIResource.setXMIVersion can help, but I suppose you need UML
> to do it for you so please ask about UML on the
> eclipse.modeling.mdt.uml2 forum.
>
>
> On 10/09/2012 6:12 PM, Ian Carr wrote:
>> How can I serialize an EMF (UML) model using one of the older XMI
>> formats.
>>
>> I need to export in XMI 2.1 to import into another tool, but my
>> models are being
>> serialized as 2.4.1 format using the latest Juno.
>

Re: EMF Serialization in older XMI format [message #910930 is a reply to message #910921]

Mon, 10 September 2012 12:42

Eclipse User

Thanks for that, I have a Resource which I can probably cast down to an XMIResource?

I assume the string parameter is intended to take values from XMIResource such as VERSION_2_1_VALUE?

Re: EMF Serialization in older XMI format [message #910933 is a reply to message #910929]

Mon, 10 September 2012 12:46

Eclipse User

It seems to be a catch 22.

I need the bug fixed tools (including Acceleo code generation) from Juno, which now exports in 2.4.1 format by default. But I am trying to round trip the UML through visual paradigm which in it's latest incarnation supports XMI up to version 2.1 but not beyond. Hence the question.

Re: EMF Serialization in older XMI format [message #910937 is a reply to message #910930]

Mon, 10 September 2012 12:52

Eclipse User

Ian,

Yes, UML is using a derived XMIResourceImpl so you should be able to
downcast and use that constant.

On 10/09/2012 6:42 PM, Ian Carr wrote:
> Thanks for that, I have a Resource which I can probably cast down to
> an XMIResource?
>
> I assume the string parameter is intended to take values from
> XMIResource such as VERSION_2_1_VALUE?

Re: EMF Serialization in older XMI format [message #911768 is a reply to message #910937]

Wed, 12 September 2012 05:29

Eclipse User

Many thanks,

setting the version or the namespace property seems to work.

For reference, to migrate a file I am able to:

   resource.load
   ((XMIResource)resource).setXMINamespace(XMIResource.XMI_2_1_URI)
   resource.save

Not sure this is changing anything other than the namespace and version properties (I assume that there is nothing exploiting any schema content change), but my files are now being recognised by VP again.

Ian

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