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the Set::-(Set) operation generates a Java exception [message #1838005]

Fri, 12 February 2021 18:05

Yves BERNARD

Messages: 146
Registered: July 2014

Senior Member

Hello,

It looks like despite the ATL documentation the "-" OCL operator on Sets is not supported:
When I use it the code compiles but I get the following exception at run time:

org.eclipse.m2m.atl.emftvm.util.VMException: java.lang.UnsupportedOperationException: Set::-(Set)

Note that I get it even with this dummy code: Set{} - (Set{})

Is it a known issue?

Yves

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Re: the Set::-(Set) operation generates a Java exception [message #1838034 is a reply to message #1838005]

Sun, 14 February 2021 07:32

Dennis Wagelaar

Messages: 581
Registered: September 2012
Location: Belgium

Senior Member

Hi Yves,

I didn't know about this issue yet: you may report a bug against EMFTVM about missing collection operations. For now, you can use the excludingAll operation to achieve the '-' semantics.

Cheers,
Dennis

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Re: the Set::-(Set) operation generates a Java exception [message #1838041 is a reply to message #1838034]

Sun, 14 February 2021 12:29

Dennis Wagelaar

Messages: 581
Registered: September 2012
Location: Belgium

Senior Member

Apparently, excludingAll is not part of OCL 2.2: I've updated https://wiki.eclipse.org/ATL/EMFTVM#Additional_API to include the operations not part of OCL 2.2.

Cheers,
Dennis

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