[great-users] negative application condition

Wed Feb 22 16:38:36 CST 2006

Hi Arda,

In the mean time you can simulate negative application conditions using test
cases. This is a common pattern that we use.

If you have a pattern with negative application condition (PN1) you can make
a new pattern (PP1) with everything but the negative application. You can
then pass the results of this to a test where your first case tests for the
negative association without the negative. If it succeeds the case just
throw away the result. If it fails then the next case will be called and in
this case you can pass the objects through to the next case.

I hope this will help.

Thanks,

Adi

  _____  

From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Feng Shi
Sent: Wednesday, February 22, 2006 1:47 PM
To: great-users
Subject: RE: [great-users] negative application condition

Hi Arda,

There is a bug in GReAT for the negative pattern and we’re working fixing
it. It will be updated in the next release coming soon.

Thanks,

Feng

-----Original Message-----
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Arda
Göknil
Sent: Wednesday, February 22, 2006 12:43 PM
To: great-users
Subject: RE: [great-users] negative application condition

Hi Feng,

Is there anything about the negative application condition? 

p.s. I may have missed your e-mail about it in the user group.

Feng Shi <fengshi at isis.vanderbilt.edu> wrote:

Hi, Arda,

Would you please export the transformation model MI2SI.mga and test model
myUML.mga into XML(.xme) file and send me these two files? I cannot directly
open the mga file on my machine.

Thanks,

Feng

-----Original Message-----
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Arda
Göknil
Sent: Thursday, February 09, 2006 10:28 AM
To: great-users
Subject: RE: [great-users] negative application condition

Hi,

In my pattern, I expected the pattern to match with  ClassA, ClassB and
FeatureA classes in my input model named myUML.mga. I try to decompose the
rule into two rules. In the first rule, I define the pattern which specifies
that classA aggregates another class (classB) and has a feature. In the
second rule, I negated the association between the feature of the ClassA
;and the ClassB but nothing changed.

Aditya Agrawal <aditya.agrawal at gmail.com> wrote:

Hi Feng,

In the example, A, F and C are classes and the arrows are association
classes. 

The pattern cardinality of the classes are set to 1 and the pattern
cardinality of the associations between the classes have been shown on the
figure. 

In the previous mail I attached a zip containing Arda's original example
with the two cases I mentions. I have also exported the UMT fil e to xme.

Thanks,
Adi

-----Original Message-----
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Feng Shi
Sent: Monday, February 06, 2006 12:00 PM
To: great-users
Subject: RE: [great-users] negative application condition

Hi Adi,

In the first case mentioned in you email:

Is the "F" association class between ClassA and ClassC and its cardinality
set to 0?

If yes, currently the user needs to set the cardinality of edge A->F and
F->C to 0(not -1).

Thanks,
Feng

-----Original Message-----
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Aditya
Agrawal
Sent: Friday, February 03, 2006 1:02 PM
To: great-users
Subject: RE: [great-users] negative application condition

Hi Arda and Feng,

I ran some experiments and realized the following.

1. The pattern arda drew does not work. However, it is not because the class
called feature is negated. Because that were the case then for your example
the output would show classE but it doesn't.

R-->A--1->F<-1-->C
| ^ 
|-----0-----|

This pattern yields the wrong result.

2. A pattern of the form 

R-->A--1->B
|
|--0->C

This pattern yields the right result.

>From my understanding the A-->C edge in the first case is handled in a
different part of the pattern matcher than the other edges and I guess we
may not be checking the 0 cardinality correctly there.

Thanks,
Adi

________________________________________
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Feng Shi
Sent: Friday, February 03, 2006 11:47 AM
To: great-users
Subject: RE: [great-users] negative application condition

Hi, Arda,

I am not sure want you're meaning the "feature", is it another Class? I
could not open your transformation model and would you please send its xme
file to me?

Thanks,
Feng

-----Original Message-----
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Arda
Göknil
Sent: Friday, February 03, 2006 2:00 AM
To: great-users
Subject: RE: [great-users] negative application condition

I set the pattern cardinalities of the connection element to "0" but it
negates the element not the association. I am sending my example. I want to
define a pattern that defines a Class A which aggregates Class B and a
feature but Class B should not have the feature of Class A. When I set the
pattern cardinality of the Connection element between the Class B and the
feature, it negates the feature, not the connection between them.
Thanks,
Arda

Aditya Agrawal wrote:
Hi Arda,

In your pattern specification you can change the "pattern cardinality"
attribute even on the simple association between B and C. By simple
association I mean an association without a class. 

You can click in the line, change the attribute called "pattern cardinality
to '0' or '-1' " 

I hope this helps.

Thanks,
Adi

________________________________________
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Arda
Göknil
Sent: Thursday, February 02, 2006 9:15 AM
To: A list for GReAT users to share bugs, fixes an d ideas
Subject: RE: [great-users] negative application condition

I could not write a good example. I mean, the meta association. I imagine 
the A, B and C classes are the meta class es and the association between
them
are the meta association, there is not a meta class named Association. The
setting the pattern cardinality to "-1" is true if there is a Association
entity in the meta class.

Aditya Agrawal wrote: 
Hi Arda,

As far as I remember you can set the pattern cardinality on the association
between B and C to be "-1" instead of setting it on B. 

I don't know if things have changed in the recent past but earlier the value
for negative condition used to be "0" not "-1".

Could Attila or Feng please comment to this?

Thanks,
Adi

________________________________________
From: great-users-bounces at list.isis.vanderbilt.edu
[mailto:great-users-bounces at list.isis.vanderbilt.edu] On Behalf Of Arda
Göknil
Sent: Thursday, February 02, 2006 5:14 AM
To: great-users at list.isis.vanderbilt.edu
Subject: [great-users] negative application condition

Hi,
I have a question about the negative application condition in GREAT. In the
user manual, it is said that if you set the pattern cardinality to "-1", you
negate that element. but I want to negate the element for only one
association.
For example, in my pattern I have three classes: classA, classB and classC.
ClassA has a relation with ClassB and ClassC but I do not want ClassB to
have a relation with ClassC. I want to negate ClassC for the
association between ClassB and ClassC. But in my pattern if I set the
pattern cardinality to -1, I can not show the whole pattern in one rule. How
is it possible?
Regards,

Arda Goknil
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