Modeling

Capella Days 2024: what actually moved the needle

Capella Days 2024 takeaways: MBSE creates value when models power operations; themes on shared infrastructure, accessibility, and governance—practical guidan...

Advancing Web-Based Modeling Tools with Sirius Web: An Illustration with SysON

Slides & demos: what Sirius Web and SysON enable for SysMLv2 on the web.

Opening Up Sirius Web: A REST API Prototype

One of the big ideas behind Sirius Web is openness. Not just “open” as in open source, but also “open” as in working smoothly with the rest of the ecosystem.

How much time do I need to make coffee ?

A short demo of a Sirius Web prototype for Monte Carlo ‘guesstimates’—for modelers and engineers—showing how to build domain tools fast.

SVG icons in Sirius Web

Crisp SVG icons in Papyrus Web editors—useful for UX‑minded modelers evaluating Sirius Web and why vector assets elevate clarity.

(Sirius + Papyrus) × Web: a new Era for Collaborative Engineering tools

Announcing Obeo×CEA collaboration on Sirius Web, Papyrus Web editors, and SysMLv2 SysON—for MBSE leaders seeking open, collaborative web tooling and why it m...

Do you know Ecore? Looking for a reference card?

A one‑page Ecore reference card—handy for EMF users and educators—explaining why the core model concepts still matter and how to use them today.

What if you could design, simulate and analyze all at once using Open-Source solutions?

A demo of Sirius Web × Jupyter Notebook—for engineers and data‑minded teams—showing why live design, simulation, and analysis together can transform workflow...

Building Graphical Modeling Tools, Approaches to Reducing Complexity

How to cut complexity when building graphical modelers—for tool builders and engineering leaders—using modular design, DSLs, and fast iteration on the web.

The Rising Adoption of Capella

Witnessing an OSS technology getting together with a wide group of users is something I find exhilarating, I have experienced it with Acceleo, EMF Compare an...

EcoreTools-Next: Executable DSL made (more) accessible

Introducing ALE in Ecore Tools to make executable DSLs practical: for DSL authors and EMF users; why it matters—define behavior without codegen, iterate fast...

Graphical Modeling from 2016 to 2017: Better, Faster, Stronger

Year‑end recap and 2017 roadmap for graphical modeling with Sirius: for tool builders and adopters; why it matters—properties view, UX polish, and a push on ...

Ecore.ecore using EcoreTools

Fresh, high‑res Ecore.ecore diagrams recreated with EcoreTools: for EMF users and educators; why it matters—clear visuals and how‑to tips to document the met...

Metamodel (Ecore) Design Checklist

Index for the Ecore design checklist series: for EMF practitioners; why it matters—quick one‑page reference linking both parts for everyday use.

Metamodel (Ecore) Design Checklist - part 2

Ecore design checklist (part 2): scalability and Java mapping tips for EMF modelers; for tool builders; why it matters—keep models fast, lean, and maintainab...

Metamodel (Ecore) Design Checklist - part 1

A practical Ecore metamodel design checklist (part 1): for EMF/Sirius tool makers; why it matters—get fundamentals right early to avoid costly refactors later.

Executing, Debugging and Animating your model

Animate, debug, and execute your DSL models with GEMOC + Sirius: for DSML authors and modelers; why it matters—see live behavior (with video) as GEMOC nears ...

Modeling Avengers : OSS Technology Mix for Saving the World

Applying Eclipse modeling + OptaPlanner to smart farming water management: for engineers and researchers; why it matters—real‑world decision support beyond s...

Some news on the AQL front

What’s new in AQL for Sirius 3.1/Mars.2: for Sirius specifiers and EMF toolsmiths; why it matters—faster queries, Java‑extensible services, better validation...

AQL - a new interpreter for Sirius

TL;DR: we’ve been working on a new query interpreter for Sirius which is small, simple, fast, extensible and bring richer validation. It’s been released for ...

Sirius 3.0M6 - Anchors for Non-rectangular Images

Let’s say you need a specific shape for your modeler and this shape is directly available , you can create an SVG file (or a PNG one …) and use it as a shape...

EcoreTools 2.0 - The Luna Revival

With Eclipse Luna comes a complete re-implementation of EcoreTools, the diagram editor for Ecore. This matters because EcoreTools is often the first step our...

EMF Core does not change, but ..

Graphical, textual, table, trees, its your call, to us its just EMF models

Lately I’ve been making sure the upcoming Designer 6.0 release still plays well with Xtext. Results: fairly good. The newly introduced “Modeling Project” let...

Do you want to discard this editor's changes ?

If you’ve used EMF editors you probably already have seen this kind of dialog:

SysML Comparison and Contributions

Community and Ecosystem

Model Transformation Preview

Let’s say you have a model-to-model transformation, and you want to provide the ability for the end-user to see and control what is going to be applied on th...

Model Comparison : Logical Model, UML, Papyrus, EcoreTools and GMF Integration

Textual Adventures in Ecore + Graphical Modeler

I was cleaning up my ${HOME} folder today and found a set of demos I prepared two years ago.

Eclipse Modeling : the definitive tutorial

One of the things we keep hearing from adopters is: we need more doc — not just reference documentation but also how to use and combine the Eclipse Modeling ...

Live request interpreter for Acceleo 3.2

Laurent is working on an Interpreter View for Acceleo 3.2 (coming soon).

Sequence Diagrams for your DSL's

Obeo Designer 5.0 sneak peek—cleaner diagram UI, embedded toolbars, quick outline for diagrams, and a demo for sequence‑style DSLs.

Model Comparison : Patching with MPatch

Introducing MPatch in EMF Compare—capture changes as reusable model patches and apply them across different models with smart resolution.

Forecasts Comparison For The World !

Fun EMF hack: use EMF Compare to diff and merge World Cup forecasts—custom matchers, code snippets, and screenshots included.

Diff, Merge and Patch your Models with Helios

A practical tour of EMF Compare in Helios—semantic diff/merge, Team integration, and how the matching engine scales for real model workflows.

Ecore In Colors (In Motion)

A short demo of Ecore In Colors showing VSM‑driven interactions and the resulting modeler—for Ecore users curious about richer, interactive tooling.

Having more control ...

Regain control of your tooling with domain models, viewpoints, and generation—for developers who want less overhead and more value from modeling today.

Eclipse Acceleo Day is going on...

Live notes from Eclipse Acceleo Day at LSM—for Eclipse/modeling practitioners following community news, sessions, and takeaways as they happen.

Galileo Modeling Package is Here

Galileo Modeling Package download and highlights—for developers seeking a ready‑to‑use modeling stack and what’s new in this release today.

Quick glimpse at Galileo Modeling Package

A tour of Galileo’s Modeling Package—EcoreTools, EMF Compare, Xtext, Acceleo—for Eclipse users evaluating what’s new and useful right now.

Viewpoints-enabled Modeling Tools

Viewpoints‑enabled modeling that shows only what matters—for system designers who need focused representations and actions aligned to current concerns.

The 20 minute Graphical Modeler based on Eclipse

Build a working graphical modeler in ~20 minutes on Eclipse Modeling—for tool builders who need fast iteration, conditional styles, and live feedback.

Live Models Using JBoss Rules (Drools) and EMF

Live EMF models driven by Drools rules—for modelers and architects who want instantaneous, quantitative feedback on design quality during editing.

" I love deadlines...

… I like the whooshing sound they make as they go by.” D. Adams

Beautiful Evidence

When I discovered the NodeBox project, that thought (in fact — a book title) immediately caught my mind.

“Simplicity is the ultimate sophistication”

Leonardo Da Vinci was damn right about it, and Acceleo 2.0 is just another step in the right direction. As planned we released this new stable version today....

EMF Compare now uses XMI_ID

The generic EMF comparison engine uses statistics in order to match elements. It compares their content, their type, the relations with other objects and the...

XML files comparison/merge

On the EMFT mailing-list, Martin Taal asked me if EMF compare component was useful when one has to handle XML files.