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Error "ObjectDeclsCS" expected after "object" [message #870543]

Tue, 08 May 2012 15:47

Alain Lavoie

Messages: 82
Registered: April 2012

Member

Hello,

In a qvto script I have this object creation:

object {
ownedMember += ownedPackages->collect(thisPackage |
createPackage(thisPackage))->asOrderedSet();
}

The dynamic interpretor (red crossed circle) shows me the following error:
"ObjectDeclsCS" expected after "object"

How can it be fix.

Thanks.

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Re: Error "ObjectDeclsCS" expected after "object" [message #870556 is a reply to message #870543]

Tue, 08 May 2012 16:36

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

+= looks suspect.

When a complicated expression doesn't work, make it simpler till it does
then all becomes clear.

Regards

Ed Willink

On 08/05/2012 16:47, Alain Lavoie wrote:
> Hello,
>
> In a qvto script I have this object creation:
>
> object {
> ownedMember += ownedPackages->collect(thisPackage |
> createPackage(thisPackage))->asOrderedSet();
> }
>
> The dynamic interpretor (red crossed circle) shows me the following
> error:
> "ObjectDeclsCS" expected after "object"
>
> How can it be fix.
>
> Thanks.

Report message to a moderator

Re: Error "ObjectDeclsCS" expected after "object" [message #870600 is a reply to message #870556]

Tue, 08 May 2012 22:02

Alain Lavoie

Messages: 82
Registered: April 2012

Member

Ed Willink a écrit :
>
> += looks suspect.
>
> When a complicated expression doesn't work, make it simpler till it does
> then all becomes clear.

This comes from an extract of the [Quick Start Guide to MDA]
from Borland.

I will avoid mixing Qvt samples from different implementors.

Thanks.

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Re: Error "ObjectDeclsCS" expected after "object" [message #870622 is a reply to message #870600]

Wed, 09 May 2012 06:23

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

HI

You're not mixing implementors; just using vintage or inadequately
proof-read material.

Quick Start Guide to MDA is dated September 2006, and refers to OMG document
ptc/05-11-01 (MOF 2.0 Query/View/Transformation final adopted
specification).

The specification has not changed significantly since then. Looking at
the spec, I can find no justification for "object" in

mapping ... {
init { ... }
object { ... }
}

It seems that this usage of "object" was recognised to be redundant (in
perhaps 2004/2005) so that the syntax is

mapping ... {
init { ... }
....
}
optionally

mapping ... {
init { ... }
population { ... }
}

The residual usage of object is as a type constructor in an expression

object s:Schema {
name := self.name;
table := self.ownedElement->map class2table();
}

where += is an option, but not normally necessary since you start from
scratch.

If you're going to use QVTo, you should familiarize yourself with the
specification; it's not perfect but at least gives a vendor-independent
view of what should be right.

Regards

Ed Willink

On 08/05/2012 23:02, Alain Lavoie wrote:
> Ed Willink a écrit :
> >
> > += looks suspect.
> >
> > When a complicated expression doesn't work, make it simpler till it
> does
> > then all becomes clear.
>
> This comes from an extract of the [Quick Start Guide to MDA]
> from Borland.
>
> I will avoid mixing Qvt samples from different implementors.
>
> Thanks.

Report message to a moderator