| [Epsilon] Compare an enumeration value with a string in EVL [message #563801] |
Mon, 12 January 2009 16:00 |
 Hector Iturria
Messages: 60
Registered: July 2009 |
Member |
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Hi!
I am still using EVL to validate UML (I say "still" becuase it has
passed a long time since my last question) and I have found something
wrong (or that I don't know how to do it).
The thing is that I tried to compare an enumeration value with a string,
because it was the first that came to my head, but didn't work. But I
never surrender, so I copied the check line and pasted it in the message
instrucction to watch what was returning my code, and to my surprise it
was indeed returning what I expected. However, the test failed. You'll
see what I mean with an example:
The constraint:
constraint isShared{
check: self.packagedElement.select(a: Association | a.name=
'Association1').first().ownedEnd.select(p: Property | p.name =
'dst').first().aggregation = 'shared'
message: 'The Associoation must have the field Aggregation = shared
and is ' + self.packagedElement.select(a: Association | a.name=
'Association1').first().ownedEnd.select(p: Property | p.name =
'dst').first().aggregation
}
returns: 'The Associoation must have the field Aggregation = shared and
is shared
After confirming that there were no troubles with blank spaces next to
check were data types. And managed to compare them converting the
enumeration value into a string, through appending an string:
constraint isShared{
check: self.packagedElement.select(a: Association | a.name=
'Association1').first().ownedEnd.select(p: Property | p.name =
'dst').first().aggregation+'' = 'shared'
message: 'The Associoation must have the field Aggregation = shared
and is ' + self.packagedElement.select(a: Association | a.name=
'Association1').first().ownedEnd.select(p: Property | p.name =
'dst').first().aggregation
}
This workaround works fine, but I don't know if it is the best way to do
it. I tought you may want to know this.
Best regards,
Héctor Iturria
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