Tag: eclipsecon

Applications of high-performance model queries @ OMG/Eclipse workshop

At the last EclipseCon Europe, my collegue, István Ráth presented our incremental model query approach in the Modeling Symposium. Since then, we are working hard to evaluate further uses of the technology while creating a better tooling support for the specification of those queries.

This year, during the OMG/Eclipse workshop a day before EclipseCon 2012 István will present our approach together with our new results:

14:35 – 15:00

High performance queries and their novel applications

István Ráth- Research Associate, BME

High-performance model queries are still a major challenge for the industry standard Eclipse Modeling Framework (EMF), they are intensively used in various model validation, model transformation or code generation scenarios. Existing EMF-based query technologies (like Eclipse OCL, EMF Model Query 1-2, or native Java programs) can have significant scalability issues for complex queries of models over 50-100000 model elements. Moreover, it is often tedious and time consuming to efficiently implement EMF-based queries manually on a case-by-case basis.

Recent initiatives, such as the EMF-IncQuery framework (http://viatra.inf.mit.bme.hu/incquery) have proposed innovative algorithms to mitigate this issue. EMF-IncQuery uses a graph query language, and provides incremental query evaluation by caching the results of the model queries and incrementally maintaining the cache when the underlying EMF model changes. Furthermore, the EMF-IncQuery framework can be easily integrated into existing EMF-based applications in a non-intrusive way.

In the first part of the talk, we overview the results of a thorough benchmark comparison
intended to aid software engineers in picking the best tool for a given purpose. The measurements involve several versions of Eclipse OCL, manually optimized Java code, dedicated academic query and well-formedness checking tools and EMF-IncQuery and highlight the most important practical considerations of queries in model-driven tool design.

In the second part of the talk, we briefly overview novel and innovative uses of high performance queries such design-space exploration, whereby traditional modeling is augmented with AI techniques to aid the (semi-automatic) optimization of model-based software designs.

If you are interested in modeling techniques, I recommend attending to the talk. As a teaser, I show now an existing application of such AI-based techniques: an automated quick fix generation for domain-specific modeling languages. We already presented this technique, albeit based on the VIATRA2 transformation framework in VL/HCC 2011. The article, together with a video demonstration is available from http://dx.doi.org/10.1109/VLHCC.2011.6070373

For interest, the video demonstration is also uploaded to Youtube for easier watching. (UPDATE: For feed readers the video url is the following: http://youtu.be/kPc4x01K7-s).

EMF-IncQuery @ EclipseCon Europe ’11

The research of my group often build on various Eclipse technologies. We are developers of the VIATRA2 model transformation framework. Recently we also created EMF-IncQuery, an incremental query technology over EMF models, that we believe really useful in various areas, such as model validation during editing or model synchronization scenarios.

This year, a collegue of mine, István Ráth will attend at EclipseCon Europe, and during the Modeling Symposium present the basic use cases of the tool. In the following I attach a short abstract of the talk to give a basic idea:

EMF-IncQuery: Incremental evaluation of model queries over large EMF model

A Talk at the EclipseCon Europe 2011 Modeling Symposium
Presenter: István Ráth

High-performance model queries are still a major challenge for the industry standard Eclipse Modeling Framework (EMF), as they are intensively used in various model validation, model transformation or code generation scenarios.

Existing EMF-based query technologies (like OCL, EMF Query or native Java programs) have significant scalability issues for models over 50000 model elements. Moreover, it is often tedious and time consuming to efficiently implement EMF-based queries manually on a case-by-case basis.

This talk introduces EMF-IncQuery, a declarative and scalable EMF model query framework. EMF-IncQuery uses a graph query language, and provides incremental query evaluation by caching the results of the model queries and incrementally maintaining the cache when the underlying EMF model changes. Furthermore, the EMF-IncQuery framework can be easily integrated into existing EMF-based applications in a non-intrusive way.

During the talk, we quickly overview how easy it is to define and integrate highly scalable model queries into existing EMF-based applications, in the form of a very short live demonstration using the MDT Papyrus modeling tool. The scalability of the engine will also be demonstrated, with on-the-fly constraint revalidation that takes less than 100 milliseconds over large AUTOSAR models with over 1 million elements.

 

More info: http://viatra.inf.mit.bme.hu/incquery

Unfortunately, I cannot go to the conference, but I hope, the 10th birthday of Eclipse will be celebrated well. Have fun, and if you are interested, listen at our talk.