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remove duplications in sequence [message #72056]

Wed, 16 January 2008 10:57

wong

Messages: 54
Registered: July 2009

Member

Hello,

I used 'union' joined several Sequence, then used asSet() converted it to
a Set. A problem is duplications are not be removed.

Thanks for any help.

Wong.

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[ATL] Re: remove duplications in sequence [message #72166 is a reply to message #72056]

Wed, 16 January 2008 16:04

Eclipse User

Originally posted by: quentin.glineur.obeo.fr

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Hello,

First, please prefix the subject of you ATL related post with [ATL] as I
did for the answer. Thanks.

Then ATL sets are implemented by java hash set. The only way I see for
duplications no to be removed is that they are not *completely* equal
(by the equals() method of their implementation class).

What is the type of the elements of your sequence ?

Quentin

wong a

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Re: [ATL] Re: remove duplications in sequence [message #72202 is a reply to message #72166]

Wed, 16 January 2008 17:23

wong

Messages: 54
Registered: July 2009

Member

Hello,

Sorry about the prefix of the subject. Thank you for your reply.

The elements of the sequence is a 'ConceptRelationship' class ecore model:
<eClassifiers xsi:type="ecore:EClass" name="ConceptRelationship">
<eStructuralFeatures xsi:type="ecore:EAttribute" name="label"
eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
<eStructuralFeatures xsi:type="ecore:EAttribute" name="type"
eType="#//RelationshipType"
defaultValueLiteral=""/>
<eStructuralFeatures xsi:type="ecore:EReference" name="source"
eType="#//Concept"/>
<eStructuralFeatures xsi:type="ecore:EReference" name="target"
eType="#//Concept"/>
</eClassifiers>

inside the container class is :
<eStructuralFeatures xsi:type="ecore:EReference"
name="conceptRelations" upperBound="-1"
eType="#//ConceptRelationship" containment="true"/>

and I also got error when I tried to print out the label value.

Thanks for any help.

Wong.

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Re: [ATL] Re: remove duplications in sequence [message #72305 is a reply to message #72202]

Thu, 17 January 2008 11:12

wong

Messages: 54
Registered: July 2009

Member

Hello,

I used iterate and still can not remove the duplication.

->iterate(e; fin: Sequence(Education!ConceptRelationship)=Sequence{} |
if e.label = 'include' then
fin->append(e)
else
fin->append(e)
endif

Then I want compare the label value to remove the duplication manually. I
can get the size of the sequence, but can not retrive the label value????

rdfs.conceptRelations.size().debug('ConceptRelationship total');
rdfs.conceptRelations.debug('conceptRelations');
rdfs.conceptRelations ->first().label.debug('tttt')

erroe message:

[am3.atl] INFO: ConceptRelationship total: 4
[am3.atl] INFO: conceptRelations: Sequence {OUT!<unnamed>,
OUT!<unnamed>, OUT!<unnamed>, OUT!<unnamed>}
[am3.atl] INFO: tttt: OclUndefined

Any help, please.

Thanks in advance.

Wong.

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Re: [ATL] Re: remove duplications in sequence [message #72393 is a reply to message #72305]

Thu, 17 January 2008 16:19

wong

Messages: 54
Registered: July 2009

Member

Hello,

I initialzed a sequence as a attribute of a class in 'to' section of a
rule. Then I tried delete some elements in the sequence in 'do' section
of the rule, but this not work.

Wong: a man who hate ATL.

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Re: [ATL] Re: remove duplications in sequence [message #72412 is a reply to message #72393]

Thu, 17 January 2008 17:28

Eclipse User

Originally posted by: quentin.glineur.obeo.fr

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Hi Wong,

OK, I think I understood your need. You want to consider one attribute
as a key. This one should work :

let relations = rdfs.conceptRelations in
relations->select(cr | not relations
->subSequence(1, relations->indexOf(cr))
->collect(cr2 | cr2.label)->includes(cr.label)
)

The idea is to keep, in a sequence, all the elements for which another
element with the same label does not exist before.

Your idea about the iterate is also good but I noticed that you append
the element in both alternative of your if test. You should do this
instead :

->iterate(e; fin: Sequence(Education!ConceptRelationship)=Sequence{} |
if fin->collect(cr | cr.label)->includes(e.label) then
fin
else
fin->append(e)
endif

Any way, it will only keep elements whose label is 'include' and the
will not remove duplications.

Quentin: another man who tries to help people to like good things ;)

wong a

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Re: [ATL] Re: remove duplications in sequence [message #72556 is a reply to message #72412]

Fri, 18 January 2008 13:19

wong

Messages: 54
Registered: July 2009

Member

Hello, Quentin,

Thank you for your help. I got your code working. This is still different
from what I want.

I have a 'ConceptRelationship' class has labe, soure, target 3 attributes.
I want delete same initialized instances which have same label, and swaped
soures and targets.

My code looks like following:
->iterate(e; fin: Sequence(Education!ConceptRelationship)=Sequence{} |
if fin->select(cr | cr.label = e.label and cr.source=e.target and
cr.target =e.source )->isEmpty() or fin.isEmpty()
then
fin->append(e)
else
fin
endif
)

The select statement seem not working, and I got Oclundefined message when
I put debug after the cr.label.

Thank you,
Wong.

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Re: [ATL] Re: remove duplications in sequence [message #72682 is a reply to message #72556]

Fri, 18 January 2008 15:56

Eclipse User

Originally posted by: quentin.glineur.obeo.fr

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wong a

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Re: [ATL] Re: remove duplications in sequence [message #72729 is a reply to message #72682]

Fri, 18 January 2008 16:48

wong

Messages: 54
Registered: July 2009

Member

Hello, Quentin,

I have worked on this several days. It is very strange.

I used the resolveTemp to assign all relationships to a container.
Everything works fine, but I can not retrieve the value of
attribute(label) of relationship to compare.

XML!Element.allInstancesFrom('IN')->select(e|e.name='skos:subject')- >collect(e|thisModule.resolveTemp(e,
'infRelSub'))
-----------------------
Then I used distinct to assign all relationships to the container, I can
retrieve the value of all attributes and compare, but the container does
not change after I deleted some elements in 'do' section of the rule.

conceptRelations <- allre),

allre: distinct CAVIAr!ConceptRelationship foreach (i in b)(
label<-'include',
source<-i.parent,
target<- if ........

Thank you very much.
Wong.

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Re: [ATL] Re: remove duplications in sequence [message #72915 is a reply to message #72729]

Mon, 21 January 2008 08:56

Eclipse User

Originally posted by: quentin.glineur.obeo.fr

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Hi Wong,

Actually, the problem comes from the declarative part.
Once the attribute is set in the declarative part, one cannot make any
removal in the imperative part.
This post explains this:
http://dev.eclipse.org/newslists/news.eclipse.modeling.m2m/m sg01788.html

As a consequence, prefer using an OCL expression (even though it is more
complex) to set your property in the declarative style.

Regards,
Quentin

wong a

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