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[Acceleo ]ECORE Loop over References [message #791862]

Mon, 06 February 2012 05:46

Eclipse User

Hi,

my M2T templates are based on ECORE and I'd like to write a simple template the copies the values of an object into an array (php). To do so, I need the current index of the for loop. In Acceleo 2.x there was a a current() function, but I could not find anything similar in Acecleo 3.x

My template code looks like:

[for (ref : EReference | e.eReferences)]
$result['['/] X [']'/] = ... // TODO write instead of X the current index
[/for]

The result should look like

$result[0] = ...
$result[1] = ...

This gives me also an warning in the eclipse. Is teher a better way to loop over the refs? For the eAttributes this seems to be fine.

By the way, is there a smarter way to print "[" or "]"s?

THX,

Kalaus

[Updated on: Tue, 07 February 2012 04:00] by Moderator

Re: [Acceleo ]ECORE Loop over References [message #792678 is a reply to message #791862]

Tue, 07 February 2012 04:17

Eclipse User

Hi,

[for (ref : EReference | e.eReferences)]
Current index: [i/]
[/for]

If you have a compilation issue with this, switch to 3.1.2 (a bug appeared with this in 3.1.1)

Quote:

By the way, is there a smarter way to print "[" or "]"s?

Since '[' is the only character that creates a problem, we choose not to introduce a combination to write it instead of ['['/] and we recommend to use the same for [']'/]

Regards,

Stephane Begaudeau, Obeo

--
Twitter: @sbegaudeau & @acceleo
Google+: stephane.begaudeau & acceleo
Blog: http://stephanebegaudeau.tumblr.com
Acceleo Documentation: http://docs.obeonetwork.com/acceleo

Re: [Acceleo ]ECORE Loop over References [message #808012 is a reply to message #792678]

Mon, 27 February 2012 04:45

Eclipse User

Hi,

cool this works. But I still stumbled upon one other issue. If I want to loop over all eAttributes and the all eRefrences and write the values into an array, how would I do this the best way? Suppose I don not have an "append" method?

[for (ref : EAttribute | e.eAllAttributes)]
$result['['/] [i/] [']'/] = ... //
[/for]

[for (ref : EReference | e.eReferences)]
$result['['/] X [']'/] = ... // so this should be e.eAllAttributes.size + i or so...
[/for]

Thanks a lot,

Klaus

Re: [Acceleo ]ECORE Loop over References [message #808021 is a reply to message #808012]

Mon, 27 February 2012 04:50

Eclipse User

<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Kalaus, 
 
Note that you're using eAllAttributes in one case but not eAllReference
in the other so you'll only get the references defined locally in
the class, not the ones from super classes. 
 
 
On 27/02/2012 10:45 AM, Kalaus Schaefersen wrote:
<blockquote cite="mid:jifjbb$25o$1@news.eclipse.org" type="cite">Hi,
 
cool this works. But I still stumbled upon one other issue. If I
want to loop over all eAttributes and the all eRefrences and write
the values into an array, how would I do this the best way?
Suppose I don not have an "append" method?
 
 
[for (ref : EAttribute | e.eAllAttributes)]
 
$result['['/] [i/] [']'/] = ... //
 
[/for]
 
 
[for (ref : EReference | e.eReferences)]
 
$result['['/] X [']'/] = ... // so this should be
e.eAllAttributes.size + i or so...
 
[/for]
 
 
 
Thanks a lot,
 
 
Klaus
 
 
 
</blockquote>
</body>
</html>

Re: [Acceleo ]ECORE Loop over References [message #808930 is a reply to message #791862]

Tue, 28 February 2012 04:53

Eclipse User

Kalaus,

Do you really need to iterate through two different loops over attributes and references? You could use a loop on eAllStructuralFeatures instead and not worry about the index.

[for (feature : EStructuralFeature | e.eAllStructuralFeatures())]
$result['['/] [i/] [']'/] = ...
[/for]

Laurent Goubet
Obeo

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