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[newbee] Howto create children programmatically? [message #494384]

Fri, 30 October 2009 13:55

Alex Schenkman

Messages: 21
Registered: October 2009
Location: Sweden

Junior Member

Hi List:

I'm creating my model programatically with Java code. I do have an ecore model that generates a Factory for the classes in my model.

My problem is setting the relationships between my objects.
How do I define that an object is a child of another?

Is CreateChildCommand involved in this?
(org.eclipse.emf.edit.command.CreateChildCommand)

EditingDomain?

I do not need an editor nor GUI.

Thanks in advance!

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Re: [newbee] Howto create children programmatically? [message #494394 is a reply to message #494384]

Fri, 30 October 2009 14:04

Enrico Schnepel

Messages: 121
Registered: July 2009

Senior Member

Hello Alex,

an object being a child of an other object is defined at the meta level by
the ecore containment feature in your reference.

Create the Object with your factory and for ...
- a multivalued reference use the getter and then add your object.
- a singlevalued feature just set the reference target with the setter.

Regards

Enrico

"Alex Schenkman" <spam@schenkman.info> schrieb im Newsbeitrag
news:hcer8a$1nj$1@build.eclipse.org...
> Hi List:
>
> I'm creating my model programatically with Java code. I do have an ecore
> model that generates a Factory for the classes in my model.
>
> My problem is setting the relationships between my objects.
> How do I define that an object is a child of another?
>
> Is CreateChildCommand involved in this?
> (org.eclipse.emf.edit.command.CreateChildCommand)
>
> EditingDomain?
>
> I do not need an editor nor GUI.
>
> Thanks in advance!
>
>

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Re: [newbee] Howto create children programmatically? [message #494395 is a reply to message #494394]

Fri, 30 October 2009 14:11

Eclipse User

Originally posted by: richkulp.us.NO_SPAM.ibm.com

Hi,

AS for the CreateChildCommand, I don't remember the exact syntax but
commands are used when your model is under editor control that allows
undo/redo. If you are updating your model in conjunction with an editing
domain and a command stack then you must use commands to update the
model. It you updated directly then you would break the command stack
and you couldn't undo/redo the changes. If you are not maintaining your
model as an input to an editor then you would directly use the getters
and setters in the generated model.

--
Thanks,
Rich Kulp

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