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Generating EMF from advanced XSDs [message #622368]

Mon, 22 March 2010 21:28

Igor Jacy Lino Campista

Messages: 34
Registered: July 2009

Member

Hello EMF experts,

A challenging one.

I have spent quite a lot of time trying to generate a high quality ECORE file out of the technical documentation DITA schemas (XSDs). XSD -> ECore

The DITA XSD set comes in two flavors: one with relative path dependencies, and the other simplified by using Apache Catalog Resolver (1st time I heard of it).

A zip file containing the XSD defintions is here:

http://www.oasis-open.org/committees/download.php/36335/xsd1 .2-20100209.zip

Some questions arises:

How can I make the apache catalog based XSDs be resolved by the Ecore generator ?

What best and simple strategy can I use to generate a good ecore file from the XSDs when there are too many dependencies? (Trying to do XSD -> Ecore from the set of XSDs that have relative dependencies is not working)

For the set of XSDs using apache catalog URLs, here is a snippet from the file technicalContent\xsd\topic.xsd

<xs:include schemaLocation="urn:oasis:names:tc:dita:xsd:metaDeclMod.xsd:1.2 "/>

The last question: Is there a way to generate the XSD mapping to Ecore from such an XSD structure?

Thanks in advance,
Igor

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Re: Generating EMF from advanced XSDs [message #622369 is a reply to message #622368]

Mon, 22 March 2010 21:52

Igor Jacy Lino Campista

Messages: 34
Registered: July 2009

Member

Forgot to mention, that I want to be able to work with instances of the model described by those XSDs. Also those XSD may be derived or specialized.

I was thinking EMF can help me there. I'm not sure at what level of abstraction though. Would it make better sense to be at the level of XSD meta-model instance and not the XSD meta-model model instance?

There is a nice article about apache catalog, and the reason those URN namespaces exists for simplifying XSDs.

http://xml.apache.org/commons/components/resolver/resolver-a rticle.html

Thanks,
IGor

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Re: Generating EMF from advanced XSDs [message #622376 is a reply to message #622368]

Tue, 23 March 2010 14:08

Ed Merks

Messages: 33218
Registered: July 2009

Senior Member

Igor,

Comments below.

Igor Jacy Lino Campista wrote:
> Hello EMF experts,
>
> A challenging one.
>
> I have spent quite a lot of time trying to generate a high quality
> ECORE file out of the technical documentation DITA schemas
> (XSDs). XSD -> ECore
>
>
> The DITA XSD set comes in two flavors: one with relative path
> dependencies, and the other simplified by using Apache Catalog
> Resolver (1st time I heard of it).
>
>
> A zip file containing the XSD defintions is here:
>
> http://www.oasis-open.org/committees/download.php/36335/xsd1 .2-20100209.zip
>
>
>
> Some questions arises:
>
> How can I make the apache catalog based XSDs be resolved by the Ecore
> generator ?
>
> What best and simple strategy can I use to generate a good ecore file
> from the XSDs when there are too many dependencies? (Trying to do
> XSD -> Ecore from the set of XSDs that have relative dependencies is
> not working)
>
>
>
> For the set of XSDs using apache catalog URLs, here is a snippet from
> the file technicalContent\xsd\topic.xsd
>
> <xs:include
> schemaLocation="urn:oasis:names:tc:dita:xsd:metaDeclMod.xsd:1.2 "/>
>
> The last question: Is there a way to generate the XSD mapping to
> Ecore from such an XSD structure?
Why aren't you using the schemas with relative references? Those should
just work.
>
>
> Thanks in advance,
> Igor
>

Ed Merks
Professional Support: https://www.macromodeling.com/

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