[news.eclipse.modeling.m2m] Re: [QVTO] Question about intermediate prope

[Sergey Boyko <sboyko@xxxxxxxxxxx>]

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