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Create a children for an element [message #536040]

Wed, 26 May 2010 18:23

ayoub

Messages: 25
Registered: March 2010

Junior Member

Hi all,
Help me please. I have 2 metamodel MMs and MMt, and I want make the following transformation:

1- MMt!father.name = MMs!objA.name
2- MMt!children = List of MMt!child where child.name = MMs!objB.name

* for the first transformation I use de following rule:
rule r1 {
from
s : MMs!objA
to
d : MMt!father(
name <- s.name
)
}

* for the second I don't know how can I do it !!!

my source metamodel MMs is like:
<objA name="1"> </objA>
<objB name="21"> </objB>
<objB name="22"> </objB>

my target metamodel MMt is like:
<father name="..">
<children>
<child name="..."> </child>
<child name="..."> </child>
.....
.....
</children>
</father>

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Re: Create a children for an element [message #536075 is a reply to message #536040]

Wed, 26 May 2010 21:32

wafaa

Messages: 163
Registered: January 2010
Location: Egypt

Senior Member

hope this works, u forgot to include the child in rule1

guess

rule A{
from a : mms!ObjA

to b :mmt:father(
name <- a.name,
children <- a.ObjB
)
}

rule B{
from a: mms:ObjB
to b : mmt:child(

name <- a.name
)

}

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Re: Create a children for an element [message #536143 is a reply to message #536075]

Thu, 27 May 2010 08:57

ayoub

Messages: 25
Registered: March 2010

Junior Member

Wafaa,
In rule A the ObjB does not exist on ObjA:
a.ObjB means mms!ObjA.ObjB but ObjB belongs to mms directly.
I tested the code and it is not work Crying or Very Sad

forgive my poor english

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Re: Create a children for an element [message #536196 is a reply to message #536143]

Thu, 27 May 2010 11:07

wafaa

Messages: 163
Registered: January 2010
Location: Egypt

Senior Member

yes I c,

so u have to tell the transformation that children of father are objB,
i do not know how as i do not know ur metamodel

rule A{
from a : mms!ObjA

to b :mmt:father(
name <- a.name,
children <- objB.allInstancesFrom(MMs)
)
}

is it what u want!!

also some thing I learned u have to check spelling, because an error cause transformation to be wrong

we will wait for some one to reply

good luck ayoub

[Updated on: Thu, 27 May 2010 11:12]

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Re: Create a children for an element [message #536298 is a reply to message #536196]

Thu, 27 May 2010 14:58

ayoub

Messages: 25
Registered: March 2010

Junior Member

Hi,
Here is a code that I use but does not work.

helper context mms!ObjB def : getObj(): Set(mms!ObjB) =
self->select(p | p.type = 'Class');
--- ObjB has an attribute named type

rule mms2mmt {
from c : mms!ObjB
to out : mmt!father(
nam <- 'mon pere',
children <- cList
),
cList : distinct mmt!child foreach(p in c.getObj())(
name <- p.name
)
}

--previous message
Hi all,
Help me please. I have 2 metamodel MMs and MMt, and I want make the following transformation:

1- MMt!father.name = MMs!objA.name
2- MMt!children = List of MMt!child where child.name = MMs!objB.name

* for the first transformation I use de following rule:
rule r1 {
from
s : MMs!objA
to
d : MMt!father(
name <- s.name
)
}

* for the second I don't know how can I do it !!!

my source metamodel MMs is like:
<objA name="1"> </objA>
<objB name="21"> </objB>
<objB name="22"> </objB>

my target metamodel MMt is like:
<father name="..">
<children>
<child name="..."> </child>
<child name="..."> </child>
.....
.....
</children>
</father>

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