<br><font size=2 face="sans-serif">Dear Tivadar,</font>
<br>
<br><font size=2 face="sans-serif">to create an association from the AM
code you can use one of the following. </font>
<br>
<br><font size=2 face="sans-serif">1. Use UDM's generic API </font>
<br>
<br><font size=2 face="sans-serif">sample code below (this is code that
I wrote in AM of GReAT where OrState is the parent of the relation and
NewState and DataVar are pattern instances available in the rule)</font>
<br>
<br><font size=2 face="sans-serif">Uml::Class kind = Uml::classByName(OrState.__impl()->__getdn()->GetRootMeta(),
"StateDataRelation");</font>
<br><font size=2 face="sans-serif">if (!kind) return;</font>
<br>
<br><font size=2 face="sans-serif">Udm::Object pso = OrState.CreateObject(kind);</font>
<br><font size=2 face="sans-serif">if(pso==Udm::null)</font>
<br><font size=2 face="sans-serif">{ printf("\n Error: Creation
of Object failed \n");</font>
<br><font size=2 face="sans-serif">}</font>
<br><font size=2 face="sans-serif">else</font>
<br><font size=2 face="sans-serif">{ pso.SetStrValue("Value",
val);</font>
<br><font size=2 face="sans-serif"> pso.SetStrValue("Color",
"black");</font>
<br><font size=2 face="sans-serif"> Udm::Object::AssociationInfo
inf(kind);</font>
<br><font size=2 face="sans-serif"> inf.strSrcRoleName
= "states";</font>
<br><font size=2 face="sans-serif"> inf.strDstRoleName
= "data";</font>
<br><font size=2 face="sans-serif"> NewState.CreateLink(pso,
inf);</font>
<br><font size=2 face="sans-serif"> inf.strSrcRoleName
= "data";</font>
<br><font size=2 face="sans-serif"> inf.strDstRoleName
= "states";</font>
<br><font size=2 face="sans-serif"> DataVar.CreateLink(pso,
inf);</font>
<br><font size=2 face="sans-serif">}</font>
<br>
<br><font size=2 face="sans-serif">2. As far as I know you should also
be able to use the custom API to do the same </font>
<br>
<br><font size=2 face="sans-serif">some thing like this </font>
<br>
<br>
<br><font size=2 face="sans-serif">StateDataRelation rel = StateDataRelation::Create(OrState);</font>
<br>
<br><font size=2 face="sans-serif">rel.states() += NewState;</font>
<br><font size=2 face="sans-serif">rel.data() = DataVar;</font>
<br>
<br>
<br><font size=2 face="sans-serif">Thanks,</font>
<br><font size=2 face="sans-serif">Adi</font>
<br>
<br><font size=2 face="sans-serif">-----------------------------------<br>
Aditya Agrawal<br>
Researcher<br>
IBM T. J. Watson<br>
mailto:aagrawa@us.ibm.com<br>
+1 (914) 784-6068 (TL 863)<br>
</font>
<br>
<br><font size=2><tt>great-users-bounces@list.isis.vanderbilt.edu wrote
on 04/09/2005 11:04:05 AM:<br>
<br>
> Hello,<br>
> <br>
> Thanks for the answers.<br>
> Looks like the problem can be solved by<br>
> <br>
> 1) identifying the archetype from a guard/AttrMap code using Endre's
code<br>
> 2) from the same guard/AttrMap create an association (defined in<br>
> CrossLinks) between the object and it's archetype<br>
> 3) match this association from a subsequent GReAT rule<br>
> <br>
> Let's say I have an association between two MyObjects (srcMyObject,<br>
> dstMyObject) defined in CrossLinks.<br>
> <br>
> How do I create the association of step 2) ?<br>
> <br>
> I tried to look at the generated code of a GReAT rule for creating
such<br>
> association, and replicate it, but it did not work.<br>
> <br>
> <br>
> Thanks,<br>
> <br>
> Tivadar<br>
> <br>
> Endre Magyari wrote:<br>
> <br>
> ><br>
> > Then the code is:<br>
> ><br>
> > Udm::Object o;<br>
> ><br>
> > if (o.isInstance())<br>
> > {<br>
> > //o is an instance, only it's type can be modified<br>
> > Udm::Object type = o.archetype();<br>
> > //modify type<br>
> > }<br>
> > else<br>
> > {<br>
> > //o is not an instance, it's either an normal object(model,
fco,<br>
> > atom) or a derived object, which can be modified.<br>
> > //if it's a derived object, isSubtype() returns
true<br>
> > };<br>
> ><br>
> ><br>
> ><br>
> > Note that this is generic code, but since all generated types
are <br>
> > inherited from Udm::Object, isInstance(), isSubtype() works.<br>
> > For the generated classes in UDM API there is also available
an <br>
> > Archetype()call, which is typed, it returns with an object of
the<br>
> > same type.<br>
> ><br>
> ><br>
> > Endre<br>
> ><br>
> ><br>
> ><br>
> > On Fri, 8 Apr 2005 10:20:39 -0500, Attila Vizhanyo <br>
> > <viza@isis.vanderbilt.edu> wrote:<br>
> ><br>
> >> Tivadar wants to (1) query if an object is instance or not
(2) if it is,<br>
> >> get access to its type object, and modify the type object.<br>
> >><br>
> >><br>
> >>> -----Original Message-----<br>
> >>> From: Endre Magyari<br>
> >>> Sent: Friday, April 08, 2005 2:06<br>
> >>> To: udm-users<br>
> >>> Cc: This is a list for GReAT developers to exchange<br>
> >>> development related thoughts and ideas<br>
> >>> Subject: [great-dev] Re: [udm-users] RE: [great-users]
"Com<br>
> >>> exception: Object cannot bechanged"<br>
> >>><br>
> >>><br>
> >>><br>
> >>><br>
> >>><br>
> >>> Attila,<br>
> >>><br>
> >>> there is no UDM API which permits to modify
an instance<br>
> >>> object - besides,<br>
> >>> Tivadar is talking about a COM exception thrown by MGA
layer.<br>
> >>> So, what kind of solution did you mean
?<br>
> >>><br>
> >>> Thanks,<br>
> >>> Endre<br>
> >>><br>
> >>><br>
> >>> On Thu, 7 Apr 2005 16:42:22 -0500, Attila Vizhanyo<br>
> >>> <viza@isis.vanderbilt.edu> wrote:<br>
> >>><br>
> >>> > I believe these problems can be solved using the
UDM API<br>
> >>> from Guard/<br>
> >>> > AttributeMapping code. I'm forwarding your post
to the<br>
> >>> udm-users list.<br>
> >>> ><br>
> >>> > Thanks,<br>
> >>> > Attila<br>
> >>> ><br>
> >>> ><br>
> >>> >> -----Original Message-----<br>
> >>> >> From: Tivadar Szemethy<br>
> >>> >> Sent: Thursday, April 07, 2005 16:28<br>
> >>> >> To: great-users<br>
> >>> >> Subject: [great-users] "Com exception:
Object cannot be changed"<br>
> >>> >><br>
> >>> >><br>
> >>> >> Hello,<br>
> >>> >><br>
> >>> >> In a GReAT transformation, I have to make temporary<br>
> >>> modifications to<br>
> >>> >> my src model in order to make further processing
easier. However,<br>
> >>> >> some of the objects in the src are Instances
(as in General<br>
> >>> >> Properties/Type in the Attribute Panel in GME)
of other objects<br>
> >>> >> defined in a "Model Library" folder
in the src model.<br>
> >>> >><br>
> >>> >> As I understand, instances cannot be modified.<br>
> >>> >> Therefore, I need to come up with a GReAT rule,
which:<br>
> >>> >><br>
> >>> >> a) checks whether the object in question is
an Instance or not<br>
> >>> >> b) if it is, returns the corresponding "Template"
object<br>
> >>> which can be<br>
> >>> >> modified<br>
> >>> >><br>
> >>> >> How do I do this ?<br>
> >>> >><br>
> >>> >> Thanks,<br>
> >>> >><br>
> >>> >> Tivadar<br>
> >>> >> _______________________________________________<br>
> >>> >> great-users mailing list great-users@list.isis.vanderbilt.edu<br>
> >>> >> http://list.isis.vanderbilt.edu/mailman/listinfo/great-users<br>
> >>> >><br>
> >>> > _______________________________________________<br>
> >>> > udm-users mailing list<br>
> >>> > udm-users@list.isis.vanderbilt.edu<br>
> >>> > http://list.isis.vanderbilt.edu/mailman/listinfo/udm-users<br>
> >>><br>
> >>><br>
> >>> _______________________________________________<br>
> >>> great-dev mailing list<br>
> >>> great-dev@list.isis.vanderbilt.edu<br>
> >>> http://list.isis.vanderbilt.edu/mailman/listinfo/great-dev<br>
> >>><br>
> >> _______________________________________________<br>
> >> great-dev mailing list<br>
> >> great-dev@list.isis.vanderbilt.edu<br>
> >> http://list.isis.vanderbilt.edu/mailman/listinfo/great-dev<br>
> ><br>
> ><br>
> ><br>
> <br>
> <br>
> _______________________________________________<br>
> great-users mailing list<br>
> great-users@list.isis.vanderbilt.edu<br>
> http://list.isis.vanderbilt.edu/mailman/listinfo/great-users<br>
</tt></font>