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jUCMNav v5.1.0

Enhancements Highlights!

  • NEW Release 5.1.0 focuses on bug fixes, usability enhancements, user manual enhancements and other minor improvements from the major 5.0.0 release.
  • NEW Much better and flexible support for managing and navigating URN links
  • NEW Support for bilingual models
  • NEW GRL: legal compliance profile
  • NEW GRL: Strategy difference visualization
  • NEW GRL: [0,100] evaluation scale mode
  • NEW GRL: Support for strategies including other strategies
  • NEW GRL: Support for contribution overrides
  • NEW GRL: Support for sensitivity analysis
  • NEW GRL: Support for CSV Import/Export of Strategies
  • NEW Integration with EMF Compare for visualizing model differences.
  • Many improvements (contribution label editing, element resizing, searching, reporting, etc.) and bug fixes

Many of these improvements are discussed in a paper and a presentation (RIGi M? 2012, available here.

Video and Image Overviews

IMPORTANT: If you have not yet looked at the enhancements of versions 4.x, please visit these video overviews of version 4.0.0, version 4.1.0, version 4.2.0, version 4.4.0, and the description of AoURN .

Evaluation Range from 0 to 100

The standard GRL satisfaction range ([–100..100]) many be counter-intuitive to many people, even more so when a goal with a negative evaluation that has a negative contribution to another intentional element leads to a positive evaluation value for that element. jUCMNav now supports an an alternative [0..100] evaluation scale (where 0 now means fully denied) and adapted the user interface (e.g., pop-up menus with predefined values) and the propagation algorithms accordingly. The color feedback in jUCMNav now also depends on the scale being used (with the new scale, 0 is red as there is no longer any negative satisfaction values, and 50 is yellow). The scale can be set/changed by right-clicking the model in the Outline view. This affects the evaluation scale, not the contribution scale (which remains [-100..100]). Note that this should be done before creating strategies (as initial values in strategies remain unaffected by this change, i.e., one could have -100 on a [0..100] scale).

Strategy Inclusion

A parent strategy can now include another strategy, which means that the initial evaluations of the latter will be included automatically (i.e., reused) in those of the former. These included evaluations can then be overridden by parent evaluations (if they target the same intentional element), or complemented by additional evaluations. Strategy inclusion can be done recursively (across many levels). jUCMNav ensures that inclusion cycles are avoided. This feature hence improves consistency and reduces the number of updates required when new strategies or model elements are added. This is very useful for defining strategies that are minor variations of a base strategy. This is even more useful when indicators are being used (as their target/threshold/worst values can be set once and then inherited by other strategies, whose current indicator values are different).

Contribution Overrides

A contribution override (a.k.a. contribution change) is a modification to the weight (quantitative or qualitative) of a GRL contribution link. Manu such overrides can be grouped in a contribution context. Different such contexts can be defined for a model, to assess the impact of variations of contribution weights for different evaluation strategies. A contribution context is hence akin to a mini-aspect modifying the links in a GRL model.

Strategy Difference

One can now compute the "diff" between between a base strategy and a currently selected strategy on a per element basis (including actors). The standard GRL scale for quantitative evaluations goes from –100 (fully denied, shown in red) to 0 (neutral, in yellow) to +100 (fully satisfied). Consequently, the difference scale is [–200..200]. Differences are displayed between angle brackets (to differentiate them from normal satisfaction values), again with color feedback (<–200> in red, <0> in yellow, and <+200> in green), so the tradeoffs can be understood at a glance. On a [0..100] evaluation scale, differences will be in the [-100..100] range. jUCMNav allows one to select a base strategy and then switch between many alternative strategies to visualize (instantly) their differences. This feature is useful to highlight differences within the graphical model itself in order to provide more immediate feedback and support discussions between stakeholders around the model, its strategies, and the supporting tool.

Model Difference

jUCMNav now uses the EMF Compare plugin to display the results of comparing two versions of a URN model (or two URN models). This feature also allows one to copy changes (or merge) from one version to the other.

Sensitivity Analysis

jUCMNav now allows for ranges of values to be used for strategy evaluations and for contribution changes instead of just single values. The step of a range is the increment by which we iterate from the start to the end. By associating a range to an initial evaluation (or to a contribution), all other intentional elements impacted directly or indirectly will also have a range, but this time for computed values. Their resulting ranges are also displayed. In addition, all intermediate values (for each iteration) are accessible as metadata, and hence visible as a tooltip by hovering over the desired element. This simple sensitivity analysis enables the modeler or analyst to assess the impact of localized changes and to determine whether a change to an initial satisfaction value really matters or not. Sensitivity analysis in jUCMNav is currently limited to one dimension only, i.e., to a range for one evaluation or for one contribution.

Bilingual Models

jUCMNav's user interface is already multilingual (and supports French and English), but there was, until now, no way of attaching multiple names and descriptions to model elements. We implemented a feature that allows the modeler to switch between model languages and to provide alternative names and descriptions for UCM and GRL model elements. When switching languages, the name and description of each element are swapped with alternative values attached to the element as metadata. This feature is limited to two languages for the moment.

Link Management

URN links can now much more easily be created, deleted, and traversed (as hyperlinks) in models. URN links can be typed too. Links can be started/ended from/to element definitions and references (e.g., for UCM components, UCM responsibilities, GRL actors, GRL intentional elements, GRL links, and GRL indicators).

Requirements and Installation

Please visit Downloading And Installation and the animated Installation Demo. Note that this version requires Eclipse 3.7 and above (and preferably Eclipse Modeling Tools 3.7.x)


Contributors to this release included Jason Kealey, Andrew Miga, Etienne Tremblay, Daniel Amyot, Azalia Shamsaei, Gunter Mussbacher, Hao Luo, Dominique Blouin and Stéphane Leblanc.

Release Notes


  • End-user documentation is integrated with the Eclipse help system. Access Help > Help Contents from the Eclipse workbench, then select topic jUCMNav Online Help.
  • The latest user documentation can also be accessed via Help On Line

Reporting Bugs / Usability Requests

  • Send your bug reports to
  • Include reproduction steps, sample .jucm files and, if applicable, copy-paste the error log messages.
  • If you're zealous enough, we'll create a BugZilla account for you smile

Enhancements / Fixes since 5.0.0

Bug Description
811 Widget disposed error
831 GRL contribution labels cause issues with delete and undo
835 Trim element names
837 Additional zoom levels
839 New diagrams should be next to the current one
844 Do not auto-delete definitions when doing cut&paste (prevent prompt dialog)
845 Metadata editor widget disposed error
846 Metadata indicator symbol no longer shows
849 Preserve sizes when copy-pasting GRL nodes
850 Do not auto-delete contributions when doing cut&paste

For enhancements and fixes since previous releases, please refer to the release notes of the Previous Releases.

Known Issues in 5.1.0

  • Reports generated, MSC Viewer, and user documentation only available in English.
  • When changing a few of the preferences, one must sometimes close & re-open a model for the change to have an impact on the editor.
  • The UCM traversal mechanism does not take into consideration advanced stubs, failures, aspect-oriented extensions, and some other attributes.
  • Aspect-oriented GRL is not yet supported.
  • Generated reports could be more complete
-- Jason Kealey - 04 May 2012
Topic revision: r3 - 12 Jun 2013 - 16:57:06 - Daniel Amyot
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