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how select elements in a specific element [message #762087]

Wed, 07 December 2011 14:27

Fy Za

Messages: 245
Registered: March 2010

Senior Member

Hi All,
generally, when we want to select all instances of a meta-class,
we do :

MetaModel! ClassA.allInstances (). asSequence ()

but, if we have like this

    ClassA : has_B 0..* ClassB
    ClassB : has_c 0..* ClassC
    ClassC : has_c_children 0..* ClassC --recursive reference

and I want to select all ClassC elements but in a specific ClassB element
and not in all the model
How do It ??
PLZ help me
thanks

[Updated on: Wed, 07 December 2011 14:35]

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Re: how select elements in a specific element [message #763210 is a reply to message #762087]

Fri, 09 December 2011 11:07

giovi disanto

Messages: 58
Registered: September 2011

Member

i don't understand your question... you must select this elements in the from part of a rule? your metamodel have opposite reference?

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Re: how select elements in a specific element [message #763275 is a reply to message #763210]

Fri, 09 December 2011 13:37

Fy Za

Messages: 245
Registered: March 2010

Senior Member

Hi giovi,
It can be a part from a rule or also helper.
if I have opposite references, the problem is solved but I haven't Sad

for Example, I have a XMI model like this

<a:A>
 <b:B>
  <c:C>
   <c1:C>
   <c3:C>
  <c:C>
   <c1:C>
   <c2:C>
   <c3:C>
    <c1:C>
  <c3:C>
 </b>
 <b:B>
  <c:C>
   <c2:C>
   <c1:C>
  <c:C>
   <c2:C>
   <c1:C>
   <c2:C>
    <c3:C>
  <c:C>
 </b>
</a>

I have a metamodel similar to this

class A : 
         reference b to Class B
class B  :
         reference c to Class C
Class C :
         reference c1 to Class C
         reference c2 to Class C
         reference c3 to Class C

for example if a apply my helper named getAllC to the first B element
the helper returs a Sequence of C elements : {c, c1,c3,c,c1,c2,c3,c1,c3}

[Updated on: Fri, 09 December 2011 13:40]

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Re: how select elements in a specific element [message #763776 is a reply to message #763275]

Sat, 10 December 2011 14:53

giovi disanto

Messages: 58
Registered: September 2011

Member

if you have a unique variable for select the specific B class, you can use select form allInstances of B class and navigate reference of C classes inside...

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