Eclipse Community Forums: Epsilon » [EVL] Access to parent node

Help

Home

Home » Modeling » Epsilon » [EVL] Access to parent node

Show: Today's Messages :: Show Polls :: Message Navigator

[EVL] Access to parent node [message #1274064]

Fri, 21 March 2014 00:05

Johnny Soab

Messages: 1
Registered: March 2014

Junior Member

Hi,

I have a simple metamodel defined as follows:

class Model {
  val Root[1] root;
}

class Node {
  attr String name;
  val Child[*] childs;
}

class Root extends Node {
}

class Child {
}

class Mand extends Node, Child {
}

I can therefore create two nodes with a reference between them. How can I, with two nodes between them through EVL, access to the parent node? I tried "Node.self" but it gives me error.. is there any way?

Thank you!

Report message to a moderator

Re: [EVL] Access to parent node [message #1274414 is a reply to message #1274064]

Fri, 21 March 2014 12:42

Dimitris Kolovos

Messages: 1459
Registered: July 2009
Location: York, UK

Senior Member

Hi Johny,

The quick and dirty way is to use EMF's eContainer() operation (i.e. self.eContainer()). The proper way is to define an opposite reference in your metamodel e.g.

class Node {
attr String name;
val Child[*]#parent children;
ref Child#children parent;
}

Cheers,
Dimitris

Report message to a moderator

Previous Topic:	How to refer to UML profile within ETL module
Next Topic:	sortedBy

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Jul 20 22:59:23 GMT 2017

.:: Contact :: Home ::.