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Operation '>' and '<' not recognized for type EDate [message #1791522]

Sun, 01 July 2018 21:23

Youcef Choufa

Messages: 1
Registered: July 2018

Junior Member

I receive an error while trying to compare two dates...I still don't understand why?

here is the OCL statement and error:
Evaluating:
self.dateDebutLocation < self.dateFinLocation
Results:
Cannot find operation (<(EDate)) for the type (EDate)

here is the attribute creation:

class Reservation
{
invariant consistanceDate:
self.dateDebutLocation < self.dateFinLocation;

invariant existanceDepot:
self.exige.montant > 0.0 and self.exige->notEmpty();
property reserve : modeleVoiture;
property exige : Depot;
attribute dateDebutLocation : ecore::EDate;
attribute dateFinLocation : ecore::EDate;
attribute dateReservation : ecore::EDate[?];
}

Variable names are in french but regardless it is the same...what is the problem?

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Re: Operation '>' and '<' not recognized for type EDate [message #1792026 is a reply to message #1791522]

Tue, 10 July 2018 08:40

Cedric Brun

Messages: 430
Registered: July 2009

Senior Member

Hi, I'm afraid I can't answer this question and it's not in the right forum, this is an OCL related question, you'll more likely to get a relevant answer using the OCL forum: https://www.eclipse.org/forums/index.php/f/26/

Cheers,

http://cedric.brun.io news and articles on eclipse and eclipse modeling.

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