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select command in .ETL [message #1165976]

Fri, 01 November 2013 17:39

Mahsa P

Messages: 115
Registered: July 2013

Senior Member

Hi my friends
I created one "emf model" from one ".ecre" file. I want to access the instance of one Eclass in "emf model" using ".etl" code. for example, my ".ecore" file is similar to :
index.php/fa/16643/0/

and my model is:
index.php/fa/16642/0/

I want to access "file a" in my model. so in ".etl" code i write:

var file := fileSystem.select(i | i.name= file).first();

but i get this error in run of launch file:
"Called feature name on undefined object"

can any one help me for this problem? what should i write instead of this command?

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[Updated on: Fri, 01 November 2013 17:43]

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Re: select command in .ETL [message #1165998 is a reply to message #1165976]

Fri, 01 November 2013 17:59

Dimitris Kolovos

Messages: 2163
Registered: July 2009
Location: York, UK

Senior Member

Hi Masha,

Filesystem.all.first().files.select(i | i.name = "a").first() should do the trick.

Cheers,
Dimitris

[Updated on: Fri, 01 November 2013 17:59]

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Re: select command in .ETL [message #1166240 is a reply to message #1165998]

Fri, 01 November 2013 21:51

Mahsa P

Messages: 115
Registered: July 2013

Senior Member

Thanks Dimitis,
>Filesystem.all.first().files.select(i | i.name = "a").first() should do the trick.
This command just works for access to the instance with name of "a" but I want access to first instance of file from fileSystem in any model. in other word, I must get all instances of fileSystems, and then I should select first file instance from them. in my case,always there is one fileSystem in any model.

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Re: select command in .ETL [message #1166247 is a reply to message #1166240]

Fri, 01 November 2013 21:58

Dimitris Kolovos

Messages: 2163
Registered: July 2009
Location: York, UK

Senior Member

Hi Masha,

Then, what you probably need is Filesystem.all.first().files.first()

Cheers,
Dimitris

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Re: select command in .ETL [message #1167583 is a reply to message #1166247]

Sat, 02 November 2013 19:40

Mahsa P

Messages: 115
Registered: July 2013

Senior Member

Thanks,
I tried this, but I receive this error: "'file' not found in object"!

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Re: select command in .ETL [message #1167594 is a reply to message #1167583]

Sat, 02 November 2013 19:49

Dimitris Kolovos

Messages: 2163
Registered: July 2009
Location: York, UK

Senior Member

Hi Masha,

I suspect that you mistyped something since there's no token "file" in the solution I suggested:

Filesystem.all.first().files.first().println();

If that's not the case, could you please put together a minimal example [1] I can use to reproduce this?

Cheers,
Dimitris

[1] http://eclipse.org/epsilon/doc/articles/minimal-examples/

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