Contextual operations and properties

[eclipse-qvtd-bot]

| --- | --- | | Bugzilla Link | 495331 | | Status | RESOLVED FIXED | | Importance | P3 normal | | Reported | Jun 02, 2016 13:06 EDT | | Modified | Nov 01, 2016 04:54 EDT | | See also | 506817 | | Reporter | Ed Willink |

Description

QVT can be extended by explicutly embedding things in the original metamodels or by importing Comoplete OCL. Both approaches are a bit naff.

Much better to allow definition within QVT (OCLinEcore syntax).

[eclipse-qvtd-bot]

By Ed Willink on Jun 10, 2016 05:30

Contextual operations are equally applicable to QVTc/i/r so for shared functionality, we need to address the no-QVTbaseCS asymmetry allowing at least an AbstractTransformationCS to share currently duplicated code.

This code is also shared with OCLinEcore. Perhaps OCL needs to be:\ Base, EssentialOCL, OCLBase, OCLinEcore so that OCLBase can be re-used by OCL-like languages with structure.

[eclipse-qvtd-bot]

By Ed Willink on Jun 13, 2016 07:12

Introducing a new "package" construct enables the clumsiness of a long package qualification on a transformation name and the difficulty of specifying URIs to be solved.

In OCLinEcore style, "package name : pfx = 'URI' { ... }" can be wrapped around nested package, class or transformation constructs. (For QVTc/i map constructs remain outside any {} scoping - inconsistent, but no-change.

Additionally the package name may be qualified Java-like, but only the innermost gets a nsPfx, nsURI. This allows

package org::eclipse::qvtd::xtext::qvtrelation::tests::hstm2fstm\ {\ transformation HierarchicalStateMachine2FlatStateMachine(hier:hierMM, flat:flatMM)\ { ...\ }\ }

as an alternative to

transformation org::eclipse::qvtd::xtext::qvtrelation::tests::hstm2fstm::HierarchicalStateMachine2FlatStateMachine(hier:hierMM, flat:flatMM)\ { ...\ }

[eclipse-qvtd-bot]

By Ed Willink on Jun 13, 2016 08:02

Pushed to master for M1.

[eclipse-qvtd-bot]

By Ed Willink on Nov 01, 2016 04:54

Qualifying transformation names did not address the original issue. See. Bug 506817.