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List or something [message #664046]

Thu, 07 April 2011 09:53

Klausen

Messages: 4
Registered: April 2011

Junior Member

Hi,

I'd like to write a little java code generator. Therefore my template hsould genearte the "import"s as well. The only issue is, that it might happen, that I generate generate several identical import, as 'm just looping over a list of ERFeferences. Is there any way to define a list or anything like that, where I can put the generated imports to check via contaions(..) if I have already genearted the4 import?

Kind Regards,

klausen

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Re: List or something [message #664290 is a reply to message #664046]

Fri, 08 April 2011 09:39

Sven Efftinge

Messages: 1823
Registered: July 2009

Senior Member

You should mentioned which template language you use.
If it's Xpand you can use contains or even use a set.
The list literal is []
If you want a set its [].toSet()

Sven

Am 4/7/11 11:53 AM, schrieb Klausen:
> Hi,
>
> I'd like to write a little java code generator. Therefore my template
> hsould genearte the "import"s as well. The only issue is, that it might
> happen, that I generate generate several identical import, as 'm just
> looping over a list of ERFeferences. Is there any way to define a list
> or anything like that, where I can put the generated imports to check
> via contaions(..) if I have already genearted the4 import?
>
> Kind Regards,
>
> klausen

--
Need professional support for Xtext or other Eclipse Modeling technologies?
Go to: http://xtext.itemis.com
Twitter : @svenefftinge
Blog : http://blog.efftinge.de

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Re: List or something [message #664315 is a reply to message #664046]

Fri, 08 April 2011 11:20

Klausen

Messages: 4
Registered: April 2011

Junior Member

I'm using the normal Acceleo Templates. The meta model is ECORE.

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Re: List or something [message #664327 is a reply to message #664315]

Fri, 08 April 2011 11:56

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

If you put your imports in a Set duplicates should be removed
automatically, but this slightly implies that you need two passes; one
to prepare for code generation and another to code generate. If
preparation gets non-trivial, you might consider an M2M to prepare and
then a simpler M2T to generate.

Regards

Ed Willink

On 08/04/2011 12:20, Klausen wrote:
> I'm using the normal Acceleo Templates. The meta model is ECORE.

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Re: List or something [message #664356 is a reply to message #664327]

Fri, 08 April 2011 14:13

Klausen

Messages: 4
Registered: April 2011

Junior Member

ok, but how do a put the imports in a set? My curernt code looks like this

[for (e : EClass | p.eContents())]
import [p.name/].I[e.name/];
[/for]

Do I have to use a let clause?

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Re: List or something [message #664373 is a reply to message #664356]

Fri, 08 April 2011 14:54

Laurent Goubet

Messages: 1902
Registered: July 2009

Senior Member

This is a multi-part message in MIME format.
--------------050103090901000905020808
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Hi,

You can use something like this :

[for (e : EClass | p.eContents()->filter(EClass)->asSet())]
import [allClasses.name]
[/for]

Laurent Goubet
Obeo

On 08/04/2011 16:13, Klausen wrote:
> ok, but how do a put the imports in a set? My curernt code looks like this
>
> [for (e : EClass | p.eContents())]
> import [p.name/].I[e.name/];
> [/for]
>
> Do I have to use a let clause?

--------------050103090901000905020808
Content-Type: text/x-vcard; charset=utf-8;
name="laurent_goubet.vcf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="laurent_goubet.vcf"

YmVnaW46dmNhcmQNCmZuOkxhdXJlbnQgR291YmV0DQpuOkdvdWJldDtMYXVy ZW50DQpvcmc6
PGEgaHJlZj0iaHR0cDovL3d3dy5vYmVvLmZyIj5PYmVvPC9hPg0KZW1haWw7 aW50ZXJuZXQ6
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bjoyLjENCmVuZDp2Y2FyZA0KDQo=
--------------050103090901000905020808--

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Re: List or something [message #664374 is a reply to message #664356]

Fri, 08 April 2011 14:56

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

Generically you could try something like

[for (s : String | p->collect(e : EClass | p.name + '.I' +
e.name)->asOrderedSet()->sortedBy(s : String | s))]
import [s/];
[/for]

but your problem seems much simpler with a fixed package prefix try

[for (e : EClass | p.eContents()->asOrderedSet()->sortedBy(name))]
import [p.name/].I[e.name/];
[/for]

Regards

Ed Willink

On 08/04/2011 15:13, Klausen wrote:
> ok, but how do a put the imports in a set? My curernt code looks like
> this
>
> [for (e : EClass | p.eContents())]
> import [p.name/].I[e.name/];
> [/for]
>
> Do I have to use a let clause?

Report message to a moderator

Re: List or something [message #664375 is a reply to message #664373]

Fri, 08 April 2011 14:57

Laurent Goubet

Messages: 1902
Registered: July 2009

Senior Member

This is a multi-part message in MIME format.
--------------090408030405060108000300
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Without the copy/pasting errors, this gives :

[for (e : EClass | p.eContents()->filter(EClass)->asSet())]
import [p.name/].I[e.name/];
[/for]

:)

Laurent Goubet
Obeo

On 08/04/2011 16:54, Laurent Goubet wrote:
> [for (e : EClass | p.eContents()->filter(EClass)->asSet())]
> import [allClasses.name]
> [/for]

--------------090408030405060108000300
Content-Type: text/x-vcard; charset=utf-8;
name="laurent_goubet.vcf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="laurent_goubet.vcf"

YmVnaW46dmNhcmQNCmZuOkxhdXJlbnQgR291YmV0DQpuOkdvdWJldDtMYXVy ZW50DQpvcmc6
PGEgaHJlZj0iaHR0cDovL3d3dy5vYmVvLmZyIj5PYmVvPC9hPg0KZW1haWw7 aW50ZXJuZXQ6
bGF1cmVudC5nb3ViZXRAb2Jlby5mcg0KdXJsOmh0dHA6Ly93d3cub2Jlby5m cg0KdmVyc2lv
bjoyLjENCmVuZDp2Y2FyZA0KDQo=
--------------090408030405060108000300--

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Re: List or something [message #664380 is a reply to message #664375]

Fri, 08 April 2011 15:17

Klausen

Messages: 4
Registered: April 2011

Junior Member

Thx,

But my eclipse complain about the asSet() call. Which version of Eclispe / Acceleo do I need?

I'm running

Version: Helios Service Release 1
Build id: 20100917-0705
Acceleo SDK : 3.0.1.v201009150438

Cheers,

Klaus

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Re: List or something [message #664562 is a reply to message #664046]

Mon, 11 April 2011 07:51

Stephane Begaudeau

Messages: 458
Registered: April 2010
Location: Nantes (France)

Senior Member

Hi,

There was a bug with the "filter" operation which returned a Collection and not the same kind of collection as the source of the operation like:

mySet->filter(...) : Set
mySequence->filter(...) : Sequence
myBag->filter(...) : Bag
myOrderedSet>filter(...) : OrderedSet

And since the "asSet()" operation does not exists on "Collection", it didn't compile.

This bug has been fixed, you should update with the Acceleo update site: http://download.eclipse.org/modeling/m2t/acceleo/updates/rel eases/3.0

Stephane Begaudeau, Obeo

--
Twitter: @sbegaudeau
Acceleo wiki: http://wiki.eclipse.org/Acceleo
Blogs: http://stephanebegaudeau.tumblr.com & http://sbegaudeau.tumblr.com

[Updated on: Mon, 11 April 2011 07:52]

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