Xcore meets IncQuery: How the new generation of DSLs are made - talk at EclipseCon Europe 2013

Submitted by István Ráth on Wed, 10/30/2013 - 12:37

The EMF-IncQuery Project is proud to announce our talk at this year's EclipseCon Europe conference titled "Xcore meets IncQuery: How the New Generation of DSLs Are Made".

Have you ever got lost in a complex domain-specific model? Are you familiar with Facebook's Graph Search? Ever wished something like this would be available for your favorite EMF-based tool? It is, it's called EMF-IncQuery. In fact, it can do more than Graph Search, because you can create live queries, meaning you get live updates for your search results as the model is being edited. In the talk, we'll show you some of the most powerful features that this technology can be used for in practice.

See you on 31 October between 14:15 - 14:50 in Seminarräume 1-3!

The technology presented in this talk is the result of a collaboration between Ed Merks, Tamas Szabo (itemis AG) and the EMF-IncQuery team. Read the rest of the blog post below for more information regarding the presentation and the live demos.

Providing incremental updates for queries, part II: expression evaluation

Submitted by Gábor Bergmann on Mon, 09/30/2013 - 19:29

After the overview presented in my previous blog post, I am now going to discuss incremental expression evaluation, a.k.a. the eval() language element, which is my most recent contribution to EMF-IncQuery. The examples continue to rely upon the School metamodel introduced here.

Providing incremental updates for queries, part I

Submitted by Gábor Bergmann on Mon, 08/26/2013 - 19:10

After discussing the importance of modeling and the concept of model queries (with OCL and EMF-IncQuery), one of the introductory blog posts presented the challenge posed by model evolution. Incremental query evluation was suggested then as a solution, without going into the details of how it can be achieved for a query language such as the one of EMF-IncQu

Illogical, captain!

Submitted by Gábor Bergmann on Tue, 07/30/2013 - 12:16

After the introductory blog posts on the importance of modeling, the concept of model queries (with OCL and EMF-IncQuery) and model evolution, I demonstrated the translation of OCL expressions into the graph pattern language of EMF-IncQuery, and outlined the general translation patterns in two consecutive posts.

The current post will place the language of EMF-IncQuery in a broader context, show aspects where it its expressive power superior to certain other approaches, and where the current implementation needs to be extended.

Release 0.7.0 available

Submitted by Zoltán Ujhelyi on Mon, 07/01/2013 - 11:24

The EMF-IncQuery project is happy to report that our first release with the version 0.7.0 is available now from the Eclipse.org download servers or the Eclipse Marketplace.

The most important highlights of this first release include:

Patterns of translating to patterns (part II)

Submitted by Gábor Bergmann on Mon, 06/24/2013 - 17:06

After the introductory blog posts on the importance of modeling, the concept of model queries (with OCL and EMF-IncQuery) and model evolution, I demonstrated the translation of OCL expressions into graph patterns. Continuing from last time, I present patterns that can be applied to translate OCL expressions to the query language of EMF-IncQuery.

Patterns of translating to patterns

Submitted by Gábor Bergmann on Fri, 05/31/2013 - 12:22

My previous introductory blog posts talked about the importance of modeling, the concept of model queries (with OCL and EMF-IncQuery) and model evolution. Last time, I demonstrated the translation of OCL expressions into graph patterns. Now it is time to discuss how the various OCL constructs can be mapped to graph patterns of EMF-IncQuery.

EMF-IncQuery 0.7M3 published

Submitted by István Ráth on Thu, 05/23/2013 - 16:09

The EMF-IncQuery project is happy to report that we have reached our third milestone, with a special focus on finalizing the API in preparation for the 0.7.0 release in the summer. Important note: please read the migration guide to ensure a smooth upgrade path for existing EMF-IncQuery projects.

The relation between OCL and graph patterns (pun intended)

Submitted by Gábor Bergmann on Mon, 04/29/2013 - 19:58

My previous introductory blog posts talked about the importance of modeling, the concept of model queries (with OCL and EMF-IncQuery) and model evolution. Now it is time to give a glimpse into my research: translating OCL expressions to graph patterns, so that incremental evaluation techniques (see EMF-IncQuery) developed for graph patterns can be applied to queries formulated in OCL.

Change or die: model queries on evolving models

Submitted by Gábor Bergmann on Tue, 04/02/2013 - 19:40

...the only constant

Modeling and model queries were discussed in my previous blog posts. Now it is time to turn our attentions towards a great challenge: that of evolving models.

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