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[QVTO]QVTO newbie needs some help here.. :( [message #468446]

Wed, 05 August 2009 14:41

Eclipse User

Friend

Originally posted by: kytoz.w.gmail.com

Hi all,

i just created two metamodels "UML.ecore" and "RELATIONAL.ecore" and i
want to use both of them as metamodels for the transformation.

Then i start to write the transformation.qvto and i keep getting the error
that tells me the modeltype can not be found.

i tried to define the modeltype like:

model type uml uses UML;

but also get the error.

what do i need to do if i want that two models work as metamodels for the
transformation? I heard from somewhere that i need to use the extension
point to register the models..but cant find the way to do that.

please help, this problem is killing me :(

thank you very much!

best wishes
aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #472106 is a reply to message #468446]

Wed, 05 August 2009 19:27

Sergey Boyko is currently offline

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Messages: 171
Registered: July 2009

Senior Member

Hi aslan ,

See some replies in-line, below.

Regards,
Sergey

aslan wrote:
> Hi all,
>
> i just created two metamodels "UML.ecore" and "RELATIONAL.ecore" and i
> want to use both of them as metamodels for the transformation.
>
> Then i start to write the transformation.qvto and i keep getting the
> error that tells me the modeltype can not be found.
>
> i tried to define the modeltype like:
>
> model type uml uses UML;
>
> but also get the error.
>
>
> what do i need to do if i want that two models work as metamodels for
> the transformation? I heard from somewhere that i need to use the
> extension point to register the models..but cant find the way to do that.

There are two ways to declare modeltype as metamodel consists of
EPackage from given .ecore file.

First is to reference file directly like follows:

modeltype uml uses "platform:/resource/qvto_project/UML.ecore";

Second is to use metamodel mappings.
This can be done from project's context menu "Properties". There is "QVT
Settings / Metamodel Mappings" section. Press "Add", type Source model
URI (usually same as EPackage NsURI) and browse for workspace .ecore model.
Once added (suppose that Source model URI is equal to "my.pack.nsuri")
it can be used in QVTo script like follows:

modeltype uml uses "my.pack.nsuri";

Also there's context assistant (Ctrl + Space) so you can type

modeltype uml uses <Ctrl + Space>

You'll see tool window with all registered metamodels, second <Ctrl +
Space> shows workspace metamodels. In case workspace metamodel being
selected context assistant automatically fills metamodel mappings and
use EPackage NsURI in place of Source model URI.

>
> please help, this problem is killing me :(
>
> thank you very much!
>
> best wishes
> aslan
>
>
>

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #478676 is a reply to message #472106]

Thu, 06 August 2009 11:26

Eclipse User

Friend

Originally posted by: kytoz.w.gmail.com

hi Sergey,

thank very much for your help! That means a lot for a beginner.

So after I fixed that issue, I wrote my first .qvto file, i fixed almost
all the errors myself except one. I thought that shouldn't be an error but
it just won't go away... :(

Would you please, please give me another hand and help me to check it out?

I made a screen-printing that included all the codes, 2 metamodels and the
error.
you can see it right here:

http://www.realsao.com/error.jpg

Thank you very much for your help!

best wishes,

aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #478751 is a reply to message #478676]

Thu, 06 August 2009 16:51

aslan is currently offline

Friend

Messages: 21
Registered: August 2009

Junior Member

hi there,

umm.. i just deleted the last line of the codes (the line with error),
made an instance .klasse file as Input and excute the first transformation
for me. A .relational file came up but the problem is... It's totally
empty...

I know maybe there is something wrong in the .qvto, but EMPTY? How? =(

Thank you for your help!

regards,

aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #478822 is a reply to message #468446]

Fri, 07 August 2009 07:13

aslan is currently offline

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Messages: 21
Registered: August 2009

Junior Member

I did a simple test for the "nothing transformed" issue:

1.I created an instance of model simpleuml (my.simpleuml) which contains only 1 Model Class as Input and excute the following transformation:

modeltype UML uses 'http://www.eclipse.org/qvt/1.0.0/Operational/examples/simpleuml';
modeltype RDB uses 'http://www.eclipse.org/qvt/1.0.0/Operational/examples/rdb';

transformation Simpleuml_To_Rdb(in uml : UML, out RDB);

main() {
	uml.rootObjects()[UML::Model]->map model2RDBModel();
}

mapping UML::Model::model2RDBModel() : RDB::Model {
	name := self.name;
}

that works just fine, a .rdb fild came up with 1 Model class in it.

2. I created an instance of model Klasse ('my.klasse') which contains only 1 'Klasse' Class as Input and excute the following transformation:

modeltype uml uses "platform:/resource/QVT/Klasse.ecore";
modeltype relational uses "platform:/resource/QVT/Relational.ecore";

transformation Klasse2Relational(in xx : uml, out relational);

main() {
	xx.rootObjects()[uml::Klasse]->map class2table();
}

mapping uml::Klasse::class2table() : relational::Table {
	name := self.name;

}

after that, an .relational file came up BUT!!: it is empty.. there should be a Table class in it.. but no.. totally empty..

anyone can give me a hand about this plz?

the metamodels that i created for the 2nd transformation you can see em here:

http://www.realsao.com/error.jpg

Thank you!

regards,
aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479127 is a reply to message #468446]

Sun, 09 August 2009 16:40

aslan is currently offline

Friend

Messages: 21
Registered: August 2009

Junior Member

still waiting for someone who can give me a hand Sad

Sad

anyone please?

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479139 is a reply to message #479127]

Sun, 09 August 2009 18:26

Ed Willink is currently offline

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Messages: 7670
Registered: July 2009

Senior Member

Hi Aslan

In order to solve any problem you need to learn to use the appropriate
analysis technique.

For rich porogramming environments this will be a source level debugger.
For simpler programming langauges there is always some form of 'printf',
so that you can print out a log of what happens and eventually deduce
where it goes wrong. This is tedious but you learn a lot along the way.

Newsgroups are for people with genuine problems or ideas, not people who
think that impatiently waiting for someone else to spend their own often
unpaid time over a weekend is more convenient.

Learn to debug.

Regards

Ed Willink

aslan wrote:
> still waiting for someone who can give me a hand :(
>
> anyone please?

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479208 is a reply to message #479139]

Mon, 10 August 2009 09:53

aslan is currently offline

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Messages: 21
Registered: August 2009

Junior Member

hallo Willink,

well first of all I have to thank you for your advice.

2nd of all I need to mention that if you can speed maybe your precious half minute on my question that you will find out the debuger won't give me any answer about that.

I did use the debuger and of course I can see in the Console that in the 1st transformation a 'Model' is transformated and in the other one there is none.

As an absolute beginner who is a newbie in QVTO even in programming and almost learning it by himself I do know that my question might be ridiculous. Before Sergey answered me the first question about how to declare Metamodel by 'platform:/...', I spent almost a whole day to try to fix it, cus I did read all the documents in the Internet that I can find and didn't find anything about that.

I spent the whole weekend on this but till now i still don't have any luck. I know that your guys time is precious so don't waste em on me if you don't want to. I am just hoping that maybe my 2nd question is as newbisch as the 1st one and some guy who just knows the answer can give me a hand.

Well, sry to the guys who think I am wasting your time or maybe even wasting the resource of the forum. Confused

Confused

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479497 is a reply to message #478676]

Tue, 11 August 2009 10:47

Sergey Boyko is currently offline

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Messages: 171
Registered: July 2009

Senior Member

Hi aslan ,

Regards,
Sergey

aslan wrote:
> hi Sergey,
>
> thank very much for your help! That means a lot for a beginner.
>
> So after I fixed that issue, I wrote my first .qvto file, i fixed almost
> all the errors myself except one. I thought that shouldn't be an error
> but it just won't go away... :(
>
> Would you please, please give me another hand and help me to check it out?
>
> I made a screen-printing that included all the codes, 2 metamodels and
> the error.
> you can see it right here:
> http://www.realsao.com/error.jpg

Error explains that collection of type Table can't be assigned to
reference with multiplicity 1. Note that operation on collection (that
is self.pointTo->map ...) results in collection of appropriate type.
You have to change last line to something like (in order to choose
single element from collection):

pointTo := self.pointTo->map class2table()->any(true);

>
> Thank you very much for your help!
>
> best wishes,
>
> aslan
>

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479510 is a reply to message #478822]

Tue, 11 August 2009 10:52

Sergey Boyko is currently offline

Friend

Messages: 171
Registered: July 2009

Senior Member

Hi aslan ,

See some replies in-line, below.

Regards,
Sergey

aslan wrote:
> I did a simple test for the "nothing transformed" issue:
>
> 1.I created an instance of model simpleuml (my.simpleuml) which contains
> only 1 Model Class as Input and excute the following transformation:
>
>
> modeltype UML uses
> ' http://www.eclipse.org/qvt/1.0.0/Operational/examples/simple uml';
> modeltype RDB uses
> 'http://www.eclipse.org/qvt/1.0.0/Operational/examples/rdb';
>
> transformation Simpleuml_To_Rdb(in uml : UML, out RDB);
>
> main() {
> uml.rootObjects()[UML::Model]->map model2RDBModel();
> }
>
> mapping UML::Model::model2RDBModel() : RDB::Model {
> name := self.name;
> }
>
>
> that works just fine, a .rdb fild came up with 1 Model class in it.
>
>
> 2. I created an instance of model Klasse ('my.klasse') which contains
> only 1 'Klasse' Class as Input and excute the following transformation:
>
>
> modeltype uml uses "platform:/resource/QVT/Klasse.ecore";
> modeltype relational uses "platform:/resource/QVT/Relational.ecore";
>
> transformation Klasse2Relational(in xx : uml, out relational);
>
> main() {
> xx.rootObjects()[uml::Klasse]->map class2table();
> }
>
> mapping uml::Klasse::class2table() : relational::Table {
> name := self.name;
>
> }
>
>
> after that, an .relational file came up BUT!!: it is empty.. there
> should be a Table class in it.. but no.. totally empty..
>
> anyone can give me a hand about this plz?

This can appear because input model (xx:uml) contains no root elements
of uml::Klasse type.
Please, attach your metamodel Klasse.ecore and input model my.klasse so
I can figure out why this is happened.

>
> the metamodels that i created for the 2nd transformation you can see em
> here:
>
>
>
> Thank you!
>
> regards,
> aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479671 is a reply to message #468446]

Tue, 11 August 2009 21:51

aslan is currently offline

Friend

Messages: 21
Registered: August 2009

Junior Member

hi Sergey,

thank you very very much for your reply and your help. I really appreciate it.

You can see the Klasse.ecore here:

http://www.realsao.com/Klasse.eore.jpg

or download here: http://www.realsao.com/Klasse.ecore

And I just created my.klasse by choosing a Model Object 'Klasse' as the root and set the name to 'Kunden',nothing else. I thought this class 'Kunden' should be the root element of the input model,cuz that works in ATL which I have already done for this M2M with the same metamodels. or..there's something different in QVTO?

http://www.realsao.com/my.klasse.jpg

Thank you!

Best wishes,

Aslan

[Updated on: Tue, 11 August 2009 22:03]

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479802 is a reply to message #479671]

Wed, 12 August 2009 14:57

Sergey Boyko is currently offline

Friend

Messages: 171
Registered: July 2009

Senior Member

Hi aslan ,

Since you gave link only to Klasse.ecore I've made minor changes to the
testing script:

modeltype uml uses "platform:/resource/QVT/Klasse.ecore";
--modeltype relational uses "platform:/resource/QVT/Relational.ecore";

transformation Klasse2Relational(in xx : uml, out uml);

main() {
xx.rootObjects()[uml::Klasse]->map class2table();
}

mapping uml::Klasse::class2table() : uml::Klasse {
name := self.name;
}

It produces output model with one Klasse instance. So problem might be
in Relational.ecore model.

Regards,
Sergey

aslan wrote:
> hi Sergey,
>
> thank you very very much for your reply and your help. I really
> appreciate it.
>
> You can see the Klasse.ecore here:
>
>
> or download here: http://www.realsao.com/Klasse.ecore
>
> And I just created my.klasse by choosing a Model Object 'Klasse' as the
> root and set the name to 'Kunden',nothing else. I thought this class
> 'Kunden' should be the root element of the input model, or?
>
>
>
>
> Thank you!

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479860 is a reply to message #479802]

Wed, 12 August 2009 18:21

aslan is currently offline

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Messages: 21
Registered: August 2009

Junior Member

Quote:

It produces output model with one Klasse instance. So problem might be in Relational.ecore model.

Hi Sergey,

yea it might be. I checked the relational.ecore again (in fact i did this many times already Sad

Sad

) after saw your reply, but i really can't find any error in it....

http://www.realsao.com/Relational.ecore

http://www.realsao.com/relational.jpg

thank you for your help.

regards,

aslan

[Updated on: Wed, 12 August 2009 18:23]

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479876 is a reply to message #479860]

Wed, 12 August 2009 21:00

Sergey Boyko is currently offline

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Messages: 171
Registered: July 2009

Senior Member

Hi aslan ,

Checked with Relational.ecore. No problems in this case too. Exact one
Table was create in output .relational file:

<?xml version="1.0" encoding="UTF-8"?>
<relational:Table xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:relational="http://relational/1.0"
xsi:schemaLocation="http://relational/1.0 Relational.ecore"/>

Regards,
Sergey

aslan wrote:
> Quote:
>> It produces output model with one Klasse instance. So problem might be
>> in Relational.ecore model.
>
>
> Hi Sergey,
>
> yea it might be. I checked the relational.ecore again (in fact i did
> this many times already :( ) after saw your reply, but i really can't
> find any error in it....
>
>
> http://www.realsao.com/relational.ecore
>
>
>
> thank you for your help.
>
> regards,
>
> aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #479896 is a reply to message #479876]

Wed, 12 August 2009 23:00

aslan is currently offline

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Messages: 21
Registered: August 2009

Junior Member

Sergey Boyko wrote on Wed, 12 August 2009 17:00

Checked with Relational.ecore. No problems in this case too. Exact one
Table was create in output .relational file:

<?xml version="1.0" encoding="UTF-8"?>
<relational:Table xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:relational="http://relational/1.0"
xsi:schemaLocation="http://relational/1.0 Relational.ecore"/>

Regards,
Sergey

hi Sergey,

that means it works just fine on your computer....

It is so strange, why it's just not O.K in my damn eclipse. OMG this issue is going to kill me Sad

Sad

I am running the modeling package of Eclipse from here:
http://www.eclipse.org/downloads/download.php?file=/technolo gy/epp/downloads/release/galileo/R/eclipse-modeling-galileo- incubation-win32.zip

this is not suppost to be a problem right? I am really really confused.

anyway THANK YOU very much for everything you did.

regarts,

aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #480017 is a reply to message #479896]

Thu, 13 August 2009 13:35

Sergey Boyko is currently offline

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Messages: 171
Registered: July 2009

Senior Member

Hi aslan ,

Interesting that everything works for you in case predefined metamodels
(RDB, UML) is used.
It might be that the problem is somewhere in project or launch
configuration properties.
Could you please zip and post your qvto project (with all stuff you use
such as metamodels, script, launch configuration being used for script
execution) so I can figure out where the problem is.

Regards,
Sergey

aslan wrote:
> Sergey Boyko wrote on Wed, 12 August 2009 17:00
>> Checked with Relational.ecore. No problems in this case too. Exact one
>> Table was create in output .relational file:
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <relational:Table xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI"
>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>> xmlns:relational="http://relational/1.0"
>> xsi:schemaLocation="http://relational/1.0 Relational.ecore"/>
>>
>> Regards,
>> Sergey
>
>
> hi Sergey,
>
> that means it works just fine on your computer....
>
> It is so strange, why it's just not O.K in my damn eclipse. OMG this
> issue is going to kill me :(
>
> I am running the modeling package of Eclipse from here:
> http://www.eclipse.org/downloads/download.php?file=/technolo gy/epp/downloads/release/galileo/R/eclipse-modeling-galileo- incubation-win32.zip
>
>
> this is not suppost to be a problem right? I am really really confused.
>
> anyway THANK YOU very much for everything you did.
>
> regarts,
>
> aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #480078 is a reply to message #480017]

Thu, 13 August 2009 17:21

aslan is currently offline

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Messages: 21
Registered: August 2009

Junior Member

Hi Sergey,

you can download the file here (11.26M):
http://www.realsao.com/workspace+runtime.zip

there are 2 folders:
workspace
runtime-EclipseApplication

and here are the detailed steps that what I did from the beginning, so you can understand the files in the project:

1. open Eclipse, creat an Empty EMF object named "PA", creat the two Metamodels "Klasse.ecore" and "Relational.ecore", then creat the .genmodel for both of em. After that, "Generate All" for both .genmodel.

2. right click on the "PA" project and "run as Eclipse Application" to call the 2nd Instance of Eclipse. In there I created a new QTV project named "QVT". I used "open file" and "save as" to copy the 2 metamodels in the folder "transforms" under project "QVT". And then I created a new Example model of "Klasse": "System.Klasse" and of course the transformation script "Klasse2Relational.qvto" ( the simple one for test)

3. right click on "Klasse2Relational.qvto" and set the run configuration, choose "System.Klasse" as Input and set the name of output and click on "Run".

4.a .relational file came up, but it is empty.

5."my.simpleuml" "UML2RDB.qvto" are also in the transforms folder, they works just fine.

Today I even tested this on a mac laptop from beginning, and the output was also EMPTY.... Mad

Mad

ps. that would be nice if you could give me your email adress, if that's ok for you you can send a mail to mein: kytoz.w(at)gmail.com

Thank you very much!

regards,

aslan

[Updated on: Thu, 13 August 2009 17:24]

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #480330 is a reply to message #468446]

Sat, 15 August 2009 08:55

aslan is currently offline

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Messages: 21
Registered: August 2009

Junior Member

hi Sergey,

do you think the problem might be the registry of metamodel? That means my two metamodels are not registered as Metamodels?

If that might b e a problem, how can i register my two Metamodels?

regards,

aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #480333 is a reply to message #468446]

Sat, 15 August 2009 09:10

aslan is currently offline

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Messages: 21
Registered: August 2009

Junior Member

hi Sergey,

finally... the problem solved...

i just changed the metamodel declare line to:

modeltype klasse uses "http://klasse/1.0";
modeltype relational uses "http://relational/1.0";

then everything works fine. Very Happy

Very Happy

I want to say thank again, thank you very very much for your help in this topic, it really means a lot to me.

Thank you!

best wishes,

aslan

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #480338 is a reply to message #480333]

Sat, 15 August 2009 11:50

Sergey Boyko is currently offline

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Messages: 171
Registered: July 2009

Senior Member

This is a multi-part message in MIME format.
--------------080809060503050107090801
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Hi aslan ,

Nice to here that it finally works!

I'd like to provide a few comments on content of "workspace+runtime.zip"
you posted.

The problem with your configuration was in 'System.klasse' file. It
references deployed 'Klasse.ecore' model while .qvto script references
workspace copy of 'Klasse.ecore'. I fixed that by opening workspace
'Klasse.ecore' in "QVTO" plug-in and generating new Klasse dynamic
instance ('Klasse.xmi' file). With the new Klasse instance script starts
to work.

Basically, there are two possibly scenarios how to develop and use
metamodels when referencing them from QVTo script.

First one is to create MM in given Eclipse platform (say developer
platform) and generate Java implementation code there. Then launch new
Eclipse Application (say runtime platform) and engineer QVTo script
here. In that case you'll reference deployed MM using their NsURI,
there's no need to copy MM to runtime platform.
Actually you used that scenario for "QVTO" project. But you copied MM to
"QVTO" plug-in that is redundant. Changing modeltype declarations to
modeltype klasse uses "http://klasse/1.0";
modeltype relational uses "http://relational/1.0";
was absolutely right. As I mentioned above your 'System.klasse' also
references deployed 'Klasse.ecore' model.
Some inconvenience here is that for every change in MM you should
regenerate implementation code for it and relaunch runtime platform so
that change becomes visible for QVTo script.

The other scenario is to use workspace MM (no need for new Eclipse
Application launching).
In such case you have to use metamodel mappings. This can be done from
project's context menu "Properties". There is "QVT Settings / Metamodel
Mappings" section. Press "Add", type Source model URI (usually same as
EPackage NsURI) and browse for workspace .ecore model.
After creating MM mappings you can reference MM from QVTo script just
the same way as in first case (using NsURI), i.e.
modeltype klasse uses "http://klasse/1.0";
modeltype relational uses "http://relational/1.0";
and MM mappings would handle redirection from NsURI to workspace .ecore
model.
Also all changes made to workspace MM become immediately visible to QVTo
script.

You can migrate your "QVTO" plug-in to the second scenario by specifying
metamodel mappings for the plug-in. You can create them yourself or just
copy attached .urimap file to .settings folder in "QVTO" plug-in. After
that the plug-in can be used right in developer platform.
Don't forget to re-create 'System.klasse' dynamic instance.

Regards,
Sergey

aslan wrote:
> hi Sergey,
>
> finally... the problem solved...
>
> i just changed the metamodel declare line to:
>
>
> modeltype klasse uses "http://klasse/1.0";
> modeltype relational uses "http://relational/1.0";
>
>
> then everything works fine. :d
> I want to say thank again, thank you very very much for your help in
> this topic, it really means a lot to me.
>
> Thank you!
>
> best wishes,
>
> aslan

--------------080809060503050107090801
Content-Type: text/xml;
name="org.eclipse.m2m.qvt.oml.mmodel.urimap"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="org.eclipse.m2m.qvt.oml.mmodel.urimap"

<?xml version="1.0" encoding="ASCII"?>
<uriMap:MappingContainer xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:uriMap="http:///www.eclipse.org/m2m/qvt/oml/MModelUriMap/1.0.0">
<mapping sourceURI="http://klasse/1.0" targetURI="platform:/resource/QVT/transforms/Klasse.ecore"/ >
<mapping sourceURI="http://relational/1.0" targetURI="platform:/resource/QVT/transforms/Relational.ecore "/>
</uriMap:MappingContainer>

--------------080809060503050107090801--

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Re: [QVTO]QVTO newbie needs some help here.. :( [message #480577 is a reply to message #480338]

Mon, 17 August 2009 17:08

aslan is currently offline

Friend

Messages: 21
Registered: August 2009

Junior Member

Hi Sergey,

Thank you very much for the explanation. They are really helpful for me.

I learn a lot in this topic with your help. Smile

Smile

Thank you!

best wishes,

aslan

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