Eclipse Community Forums: Model-to-Model Transformation » ATL

Help

Home

Home » Modeling » Model-to-Model Transformation » ATL - if expression error

Show: Today's Messages :: Show Polls :: Message Navigator

ATL - if expression error [message #874038]

Sat, 19 May 2012 20:27

Fernanda R.F.

Messages: 64
Registered: May 2012

Member

Hi,

I'm trying to use an if expression with more than one action inside it, like:

if(aPerson.gender = #male) {
thisModule.fullName <- 'Mr. ' + aPerson.name + ' ' + aPerson.surname;
}
else {
if(aPerson.isSingle) {
thisModule.fullName <- 'Miss ' + aPerson.name;
thisModule.surname <- aPerson.surname;
}
else {
thisModule.fullName <- 'Mrs. ' + aPerson.name;
thisModule.surname <- aPerson.marriedTo.surname;
}
thisModule.fullName <- thisModule.fullName + ' ' + thisModule.surname;
}

However, when I put " {" after if condition, is being shown the following error:
mismatched input '{' expecting 'then'

How can I use more than one action into if expression?

Thanks

Report message to a moderator

Re: ATL - if expression error [message #874583 is a reply to message #874038]

Mon, 21 May 2012 07:33

Sylvain EVEILLARD

Messages: 556
Registered: July 2009

Senior Member

There are 2 different kind of if statements.
The construction you are using here is only usable in the imperative code sections ("do" section of a rule).
The other construction is an OCL one :
if {cond} then {thenstmt} else {elsestmt} endif
This construction must always return a result so you won't be able to affect variables here, you should use a helper for your case.

Report message to a moderator