Home » Archived » M2M (model-to-model transformation) » [QVTO] Question about intermediate properties
| [QVTO] Question about intermediate properties [message #482107] |
Tue, 25 August 2009 12:08  |
 Toñi Reina
Messages: 209
Registered: July 2009 |
Senior Member |
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Hello everybody,
Although I have said in the subject the question is about intermediate
properties, I'm not sure if it has to do with them or with OrderedSet
assignments.
I have defined a intermediate property called nodesMainNav. This
property is an Ordered Set of Nodes.
In the transformation entry point I'm trying to fill in the
Ordered Set. For that, I executed a query named getMainNavigationArea,
that returns an Area, and as an Area is composed of a set of Nodes, I
use the relation nodes to extract all the nodes of the area. As it can
be seen in the piece of code I show below.
intermediate property siteMap::nodesMainNav : OrderedSet(siteMap::Node);
main() {
inModel.nodesMainNav := getMainNavigationArea().nodes;
log('1..Num nodos',inModel.nodesMainNav->size());
inModel.rootObjects()[siteMap::Sitemap]->map toWebSite();
}
My problem is that the log sentence that appears as '1..Num nodos' shows
the number of nodes in the OrderedSet is 0. However, I have written a
similar log sentence inside the getMainNavigationArea query, and the
result is that there are 8 nodes in the Area.
My question is: why does the OrderedSet seem to be without any nodes
outside the query? Is this related to the intermediate property or is
something related to the assignment?
Best regards,
Toñi
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| Re: [QVTO] Question about intermediate properties [message #482153 is a reply to message #482107] |
Tue, 25 August 2009 14:18  |
Sergey Boyko
Messages: 171
Registered: July 2009 |
Senior Member |
|
|
Hi Toñi ,
Some replies are in-lined, below
Regards,
Sergey
Toñi Reina Quintero wrote:
> Hello everybody,
>
> Although I have said in the subject the question is about
> intermediate properties, I'm not sure if it has to do with them or with
> OrderedSet assignments.
>
> I have defined a intermediate property called nodesMainNav. This
> property is an Ordered Set of Nodes.
>
> In the transformation entry point I'm trying to fill in the
> Ordered Set. For that, I executed a query named getMainNavigationArea,
> that returns an Area, and as an Area is composed of a set of Nodes, I
> use the relation nodes to extract all the nodes of the area. As it can
> be seen in the piece of code I show below.
>
>
> intermediate property siteMap::nodesMainNav : OrderedSet(siteMap::Node);
>
>
> main() {
>
> inModel.nodesMainNav := getMainNavigationArea().nodes;
> log('1..Num nodos',inModel.nodesMainNav->size());
> inModel.rootObjects()[siteMap::Sitemap]->map toWebSite();
>
> }
As far as I understand you've defined property 'nodesMainNav' on
modeltype 'siteMap'.
I presume that transformation your signature looks like:
transformation NewTransformation(in inModel : siteMap);
Actually it's not legal to define intermediate property on modeltypes.
Current qvto version (2.0.0) prohibits that.
In case you need global property you might define it like follows:
property nodesMainNav : OrderedSet(EClass) = OrderedSet{};
In case that doesn't help we'll go farther with the example code.
However I don't see any issues with assignment itself.
As I answered your posts in amalgam newsgroup I saw that you use old
1.0.1 version. I suggest you to start using 2.0.0 release.
>
> My problem is that the log sentence that appears as '1..Num nodos' shows
> the number of nodes in the OrderedSet is 0. However, I have written a
> similar log sentence inside the getMainNavigationArea query, and the
> result is that there are 8 nodes in the Area.
>
> My question is: why does the OrderedSet seem to be without any nodes
> outside the query? Is this related to the intermediate property or is
> something related to the assignment?
>
> Best regards,
> Toñi
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| Re: [QVTO] Question about intermediate properties [message #482175 is a reply to message #482153] |
Tue, 25 August 2009 15:06 |
Sergey Boyko
Messages: 171
Registered: July 2009 |
Senior Member |
|
|
Hi Toñi ,
I was wrong in telling that it's illegal to define intermediate property
on modeltypes. I've mixed it with transformation parameter.
I checked similar sample (with 2.0.0 qvto version) and it works:
modeltype ecore uses "http://www.eclipse.org/emf/2002/Ecore";
transformation NewTransformation(in inModel : ecore);
intermediate property ecore::nodesMainNav : OrderedSet(EClassifier);
main() {
inModel.nodesMainNav := getMainNavigationArea().eClassifiers;
log('1..Num nodos', inModel.nodesMainNav->size());
}
query getMainNavigationArea() : EPackage {
return inModel.rootObjects()![EPackage];
}
Sergey Boyko wrote:
> Hi Toñi ,
>
> Some replies are in-lined, below
>
> Regards,
> Sergey
>
> Toñi Reina Quintero wrote:
>> Hello everybody,
>>
>> Although I have said in the subject the question is about
>> intermediate properties, I'm not sure if it has to do with them or
>> with OrderedSet assignments.
>>
>> I have defined a intermediate property called nodesMainNav. This
>> property is an Ordered Set of Nodes.
>>
>> In the transformation entry point I'm trying to fill in the
>> Ordered Set. For that, I executed a query named getMainNavigationArea,
>> that returns an Area, and as an Area is composed of a set of Nodes, I
>> use the relation nodes to extract all the nodes of the area. As it can
>> be seen in the piece of code I show below.
>>
>>
>> intermediate property siteMap::nodesMainNav : OrderedSet(siteMap::Node);
>>
>>
>> main() {
>> inModel.nodesMainNav := getMainNavigationArea().nodes;
>> log('1..Num nodos',inModel.nodesMainNav->size());
>> inModel.rootObjects()[siteMap::Sitemap]->map toWebSite();
>> }
>
> As far as I understand you've defined property 'nodesMainNav' on
> modeltype 'siteMap'.
> I presume that transformation your signature looks like:
> transformation NewTransformation(in inModel : siteMap);
>
> Actually it's not legal to define intermediate property on modeltypes.
> Current qvto version (2.0.0) prohibits that.
> In case you need global property you might define it like follows:
> property nodesMainNav : OrderedSet(EClass) = OrderedSet{};
>
> In case that doesn't help we'll go farther with the example code.
> However I don't see any issues with assignment itself.
>
> As I answered your posts in amalgam newsgroup I saw that you use old
> 1.0.1 version. I suggest you to start using 2.0.0 release.
>
>>
>> My problem is that the log sentence that appears as '1..Num nodos'
>> shows the number of nodes in the OrderedSet is 0. However, I have
>> written a similar log sentence inside the getMainNavigationArea query,
>> and the result is that there are 8 nodes in the Area.
>>
>> My question is: why does the OrderedSet seem to be without any nodes
>> outside the query? Is this related to the intermediate property or is
>> something related to the assignment?
>>
>> Best regards,
>> Toñi
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| Re: [QVTO] Question about intermediate properties [message #482221 is a reply to message #482175] |
Tue, 25 August 2009 17:44 |
Toñi Reina
Messages: 209
Registered: July 2009 |
Senior Member |
|
|
Hi Sergey,
I have just downloaded the new Eclipse Galileo and, as a consequence,
qvto 2.0.0. And I have no compilation problems, so as you have found
out, intermediate properties are legal with 2.0.0.
Furthermore, the same piece of code works perfectly with 2.0.0, so I
suppose the qvto 1.0.1 engine must have some implementation error that
have been solved in 2.0.0.
Thanks for all,
Toñi
Sergey Boyko escribió:
> Hi Toñi ,
>
> I was wrong in telling that it's illegal to define intermediate property
> on modeltypes. I've mixed it with transformation parameter.
>
> I checked similar sample (with 2.0.0 qvto version) and it works:
>
> modeltype ecore uses "http://www.eclipse.org/emf/2002/Ecore";
> transformation NewTransformation(in inModel : ecore);
> intermediate property ecore::nodesMainNav : OrderedSet(EClassifier);
>
> main() {
> inModel.nodesMainNav := getMainNavigationArea().eClassifiers;
> log('1..Num nodos', inModel.nodesMainNav->size());
> }
> query getMainNavigationArea() : EPackage {
> return inModel.rootObjects()![EPackage];
> }
>
>
>
> Sergey Boyko wrote:
>> Hi Toñi ,
>>
>> Some replies are in-lined, below
>>
>> Regards,
>> Sergey
>>
>> Toñi Reina Quintero wrote:
>>> Hello everybody,
>>>
>>> Although I have said in the subject the question is about
>>> intermediate properties, I'm not sure if it has to do with them or
>>> with OrderedSet assignments.
>>>
>>> I have defined a intermediate property called nodesMainNav. This
>>> property is an Ordered Set of Nodes.
>>>
>>> In the transformation entry point I'm trying to fill in the
>>> Ordered Set. For that, I executed a query named
>>> getMainNavigationArea, that returns an Area, and as an Area is
>>> composed of a set of Nodes, I use the relation nodes to extract all
>>> the nodes of the area. As it can be seen in the piece of code I show
>>> below.
>>>
>>>
>>> intermediate property siteMap::nodesMainNav : OrderedSet(siteMap::Node);
>>>
>>>
>>> main() {
>>> inModel.nodesMainNav := getMainNavigationArea().nodes;
>>> log('1..Num nodos',inModel.nodesMainNav->size());
>>> inModel.rootObjects()[siteMap::Sitemap]->map toWebSite();
>>> }
>>
>> As far as I understand you've defined property 'nodesMainNav' on
>> modeltype 'siteMap'.
>> I presume that transformation your signature looks like:
>> transformation NewTransformation(in inModel : siteMap);
>>
>> Actually it's not legal to define intermediate property on modeltypes.
>> Current qvto version (2.0.0) prohibits that.
>> In case you need global property you might define it like follows:
>> property nodesMainNav : OrderedSet(EClass) = OrderedSet{};
>>
>> In case that doesn't help we'll go farther with the example code.
>> However I don't see any issues with assignment itself.
>>
>> As I answered your posts in amalgam newsgroup I saw that you use old
>> 1.0.1 version. I suggest you to start using 2.0.0 release.
>>
>>>
>>> My problem is that the log sentence that appears as '1..Num nodos'
>>> shows the number of nodes in the OrderedSet is 0. However, I have
>>> written a similar log sentence inside the getMainNavigationArea
>>> query, and the result is that there are 8 nodes in the Area.
>>>
>>> My question is: why does the OrderedSet seem to be without any nodes
>>> outside the query? Is this related to the intermediate property or is
>>> something related to the assignment?
>>>
>>> Best regards,
>>> Toñi
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