Eclipse OCL (Object Constraint Language) 6.4.0 Photon

6.4.0 Photon


This minor release has concentrated internally on bug fixes and extensibility support for OCL-based languages such as QVT.

External influences have required the project to migrate from Buckminster to Tycho, and to add support for the EAnnotationValidators introduced by EMF 2.14. EAnnotationValidator support motivated the addition of a conventional Eclipse-style OCL Nature and Builder.

API Certification

The project leadership certifies that the APIs in this release are "Eclipse Quality".

Architectural Issues

The project is very model-based with increasing levels of auto-generation from models.

The project is prototyping a convergence between models that form part of the OMG OCL 2.5 specification and models that can be used to auto-generate an implementation.

Security Issues


Non-Code Aspects

Documentation is available via Wikitext as a PDF monolith, HTML files or Eclipse Help.

The documentation includes examples and tutorials which remain valid after a refresh for Mars.

The build uses Tycho on the OCL HIPP.

The run-time is compatible with Xtext 2.9 and later.

Conforms To UI/UX Guidelines
Not verified
Usability Details

OCL Editors are based on Xtext and so follow Xtext practices.

The debugger exploits the standard debugger framework.

Other tooling uses standard widgets.


End of Life

There are no specific end of life concerns for this release.


The OCL forum has a moderate level of traffic (200 messages per year).

More messages occur by mistake on other fora.


This release is part of Eclipse Photon