Eclipse OCL (Object Constraint Language) 6.0.0 Mars Release Review

End Date of the Review Period: 

Reviews run for a minimum of one week. The outcome of the review is decided on this date. This is the last day to make comments or ask questions about this review.

Wednesday, June 10, 2015

6.0.0 Mars


The major plugins that support the new prototype OCL 2.5 functionality are promoted from examples to API.

  • UML 2.5 aligned models
  • Persistable Abstract Syntax
  • Extensible modeled library
  • Xtext editors

Secondary plugins remain as examples.

  • code generator
  • console
  • debugger
  • validity view

The Classic Ecore/UML plugins are still available although deprecated.

Note that, since the OMG OCL 2.4 standard suffers from significant ambiguities and conflicts making a compliant implementation impossible, Eclipse (MDT) OCL 6.0.0 release is a best endeavours attempt to establish a coherent interpretation
of the OMG OCL 2.4 and to prototype resolutions and auto-generation of the OMG OCL 2.5 standard. Two of the Eclipse (MDT) OCL
committers are also members of the OMG Revision Task Force that resolves the specification issues.

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 have been refreshed for Mars.

The build uses Buckminster on the OCL HIPP.

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 newsgroup has a moderate level of traffic (320 messages per year).

More messages occur by mistake on other newgroups.


This release is part of Mars.