Home » Modeling » EMF » Re: newbie question - linking existing database repository to DSL
| Re: newbie question - linking existing database repository to DSL [message #430871] |
Sun, 14 June 2009 14:22  |
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Steve,
This looks like a EMF, CDO and Teneo question. They are supported in the
EMF newsgroup, which I've added to this thread.
Comments below...
Bill Hinge schrieb:
> Hi
>
> I'm developing a modular DSL based tool, I have a placeholder in my DSL
> for 'legacy things'. I also have (or intend to be given) a database
> containing 'legacy things' but I want to create a reference to 'legacy
> things' in my DSL and have my GMF editor extract information about
> 'legacy things' from a database.
>
> In my scanning through eclipse projects, CDO looks like an interesting
> technology to achieve this goal, am I thinking along the right lines?
Sure, CDO is an interesting technology, but I'm certainly biased :P
If your DSL is modeled with Ecore than you can easily regenerate it with
CDO support, see http://wiki.eclipse.org/Preparing_EMF_Models_for_CDO
>
> Also, if I am given an arbitrary database schema to work from, how easy
> is it to integrate to a DSL, ie do I need to manually derive an ecore
> model of the database schema or is their something that will
> automagically create such an ecore file?
I wonder how you modeled your DSL, if not with Ecore in the first place.
Note that the EMF generator has an option to export an Ecore file for
models imported from other sources like XSD.
I'm really not sure but there's a chance that Teneo can also derive an
Ecore model directly from an existing database schema. Martin?
Cheers
/Eike
----
http://thegordian.blogspot.com
http://twitter.com/eikestepper
>
> regards
> Steve
>
> PS by legacy things I mean some structured data that already exists but
> built by someone else and I need to reference in my DSL now or in
> future.
Cheers
/Eike
----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper
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| Re: newbie question - linking existing database repository to DSL [message #430872 is a reply to message #430871] |
Sun, 14 June 2009 14:28  |
Bill Hinge
Messages: 156
Registered: July 2009 |
Senior Member |
|
|
Thanks Eike
I wasn't sure which newsgroup was most appropriate
regards
Steve
Eike Stepper wrote:
> Steve,
>
> This looks like a EMF, CDO and Teneo question. They are supported in the
> EMF newsgroup, which I've added to this thread.
>
> Comments below...
>
>
> Bill Hinge schrieb:
>> Hi
>>
>> I'm developing a modular DSL based tool, I have a placeholder in my DSL
>> for 'legacy things'. I also have (or intend to be given) a database
>> containing 'legacy things' but I want to create a reference to 'legacy
>> things' in my DSL and have my GMF editor extract information about
>> 'legacy things' from a database.
>>
>> In my scanning through eclipse projects, CDO looks like an interesting
>> technology to achieve this goal, am I thinking along the right lines?
> Sure, CDO is an interesting technology, but I'm certainly biased :P
>
> If your DSL is modeled with Ecore than you can easily regenerate it with
> CDO support, see http://wiki.eclipse.org/Preparing_EMF_Models_for_CDO
>
>> Also, if I am given an arbitrary database schema to work from, how easy
>> is it to integrate to a DSL, ie do I need to manually derive an ecore
>> model of the database schema or is their something that will
>> automagically create such an ecore file?
> I wonder how you modeled your DSL, if not with Ecore in the first place.
> Note that the EMF generator has an option to export an Ecore file for
> models imported from other sources like XSD.
>
> I'm really not sure but there's a chance that Teneo can also derive an
> Ecore model directly from an existing database schema. Martin?
>
> Cheers
> /Eike
>
> ----
> http://thegordian.blogspot.com
> http://twitter.com/eikestepper
>
>
>
>> regards
>> Steve
>>
>> PS by legacy things I mean some structured data that already exists but
>> built by someone else and I need to reference in my DSL now or in
>> future.
|
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| Re: newbie question - linking existing database repository to DSL [message #430873 is a reply to message #430871] |
Sun, 14 June 2009 20:03 |
 Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Eike,
No Teneo can not derive an ecore from a database schema. It is on the wish list for a while though and I have someone
willing to contribute code for this. However, the timeline of this is unclear at the moment.
gr. Martin
Eike Stepper wrote:
> Steve,
>
> This looks like a EMF, CDO and Teneo question. They are supported in the
> EMF newsgroup, which I've added to this thread.
>
> Comments below...
>
>
> Bill Hinge schrieb:
>> Hi
>>
>> I'm developing a modular DSL based tool, I have a placeholder in my DSL
>> for 'legacy things'. I also have (or intend to be given) a database
>> containing 'legacy things' but I want to create a reference to 'legacy
>> things' in my DSL and have my GMF editor extract information about
>> 'legacy things' from a database.
>>
>> In my scanning through eclipse projects, CDO looks like an interesting
>> technology to achieve this goal, am I thinking along the right lines?
> Sure, CDO is an interesting technology, but I'm certainly biased :P
>
> If your DSL is modeled with Ecore than you can easily regenerate it with
> CDO support, see http://wiki.eclipse.org/Preparing_EMF_Models_for_CDO
>
>> Also, if I am given an arbitrary database schema to work from, how easy
>> is it to integrate to a DSL, ie do I need to manually derive an ecore
>> model of the database schema or is their something that will
>> automagically create such an ecore file?
> I wonder how you modeled your DSL, if not with Ecore in the first place.
> Note that the EMF generator has an option to export an Ecore file for
> models imported from other sources like XSD.
>
> I'm really not sure but there's a chance that Teneo can also derive an
> Ecore model directly from an existing database schema. Martin?
>
> Cheers
> /Eike
>
> ----
> http://thegordian.blogspot.com
> http://twitter.com/eikestepper
>
>
>
>> regards
>> Steve
>>
>> PS by legacy things I mean some structured data that already exists but
>> built by someone else and I need to reference in my DSL now or in
>> future.
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
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| Re: newbie question - linking existing database repository to DSL [message #430874 is a reply to message #430873] |
Sun, 14 June 2009 21:04 |
Bill Hinge
Messages: 156
Registered: July 2009 |
Senior Member |
|
|
Thanks Martin, Eike
Just to clarify my DSL was written in ecore, however I wish to decorate
it with new features, eg my current DSL has features called Tasks which
are fixed and based on Enums. However, legacy Tasks may exist which
predate the creation of the DSL, these may exist in a database catalog
hence if I have LegacyTask defined in my DSL I hope to have an
EReference to an ecore derived from the database (my DSL is modular
consisting of multiple ecore, in theory making it straightforward to
add new functional blocks).
I would have been nice to derive ecore from a database, however if it
is not possible at the moment then this is useful to know and I can
follow plan B.
regards
Steve
Martin Taal wrote:
> Hi Eike,
> No Teneo can not derive an ecore from a database schema. It is on the
> wish list for a while though and I have someone willing to contribute
> code for this. However, the timeline of this is unclear at the moment.
>
> gr. Martin
>
> Eike Stepper wrote:
>> Steve,
>>
>> This looks like a EMF, CDO and Teneo question. They are supported in the
>> EMF newsgroup, which I've added to this thread.
>>
>> Comments below...
>>
>>
>> Bill Hinge schrieb:
>>> Hi
>>>
>>> I'm developing a modular DSL based tool, I have a placeholder in my DSL
>>> for 'legacy things'. I also have (or intend to be given) a database
>>> containing 'legacy things' but I want to create a reference to 'legacy
>>> things' in my DSL and have my GMF editor extract information about
>>> 'legacy things' from a database.
>>>
>>> In my scanning through eclipse projects, CDO looks like an interesting
>>> technology to achieve this goal, am I thinking along the right lines?
>> Sure, CDO is an interesting technology, but I'm certainly biased :P
>>
>> If your DSL is modeled with Ecore than you can easily regenerate it with
>> CDO support, see http://wiki.eclipse.org/Preparing_EMF_Models_for_CDO
>>
>>> Also, if I am given an arbitrary database schema to work from, how easy
>>> is it to integrate to a DSL, ie do I need to manually derive an ecore
>>> model of the database schema or is their something that will
>>> automagically create such an ecore file?
>> I wonder how you modeled your DSL, if not with Ecore in the first place.
>> Note that the EMF generator has an option to export an Ecore file for
>> models imported from other sources like XSD.
>>
>> I'm really not sure but there's a chance that Teneo can also derive an
>> Ecore model directly from an existing database schema. Martin?
>>
>> Cheers
>> /Eike
>>
>> ----
>> http://thegordian.blogspot.com
>> http://twitter.com/eikestepper
>>
>>
>>
>>> regards
>>> Steve
>>>
>>> PS by legacy things I mean some structured data that already exists but
>>> built by someone else and I need to reference in my DSL now or in
>>> future.
>
>
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