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Containment and eOpposite [message #1065197]

Mon, 24 June 2013 18:21

tony hedoux

Messages: 19
Registered: May 2012

Junior Member

Hi,

I have a really simple model :
Block class, which have two list of Ports objects : inPortsList and outPortsList. These are containement references.
Port class, which ave only one reference, "parent", of type Block.

The rules I would like to set are :
1 - A port can be in inPortsList XOR in outPortsList.
2 - parent is opposite references to current block.

I have no difficulties to set two containments from Block to Port, but I'm unable to set a dual eOpposite.

Metamodel is in attachment.

Someone can explain me why?

Thx for help

Tony

Attachment: test.ecore
(Size: 0.84KB, Downloaded 167 times)

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Re: Containment and eOpposite [message #1065211 is a reply to message #1065197]

Mon, 24 June 2013 19:47

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Tony,

Comments below.

On 24/06/2013 8:21 PM, tony hedoux wrote:
> Hi,
>
> I have a really simple model :
> Block class, which have two list of Ports objects : inPortsList and outPortsList. These are containement references.
Hmm...
> Port class, which ave only one reference, "parent", of type Block.
>
> The rules I would like to set are :
> 1 - A port can be in inPortsList XOR in outPortsList.
> 2 - parent is opposite references to current block.
>
> I have no difficulties to set two containments from Block to Port, but I'm unable to set a dual eOpposite.
Opposites must be paired. You can't have a single feature Port.block
that's shared by two different Block.inPortList and Block.outPortList
>
> Metamodel is in attachment.
>
> Someone can explain me why?
You can define an EOperation port.getBlock that's derived from
EObject.eContainer...
>
> Thx for help
>
> Tony
>
>

Ed Merks
Professional Support: https://www.macromodeling.com/

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