example

EMFxcel: Having Fun with Excel and Eclipse Modeling Tools

In order to be able to do advanced data processing and visualization with technologies I am familiar with, I created a simple tool to process Microsoft Excel® documents using Eclipse Modeling Framework. The solution consists of an Xcore-based Excel domain, and a slightly modified EMF generated editor that is able to open Excel files directly as EMF instance models via Apache POI, and automatically track and propagate changes as the opened file is being simultaneously modified in Excel. I demonstrate live data processing using EMF-IncQuery graph queries, and live data visualization using IncQuery Viewers.

The source code and sample models that belong to this example is found at https://github.com/ujhelyiz/EMF-IncQuery-Examples/tree/master/emfxcel, and it requires the brand new EMF-IncQuery 0.8 release that can be downloaded from the Eclipse Marketplace (among others).

Query-driven soft interconnection of EMF models (MODELS12)

We demonstrate how the incremental query evaluation of EMF-IncQuery can be used to maintain soft interconnections between EMF models stored even if they are stored separately, moved or modified without the all the corresponding models loaded at all times.

Attachment: 
application/zip iconSource code of the example

Introductory example: BPMN validation

Overview

The aim of this example is two-fold:

  • to demonstrate how well-formedness (validation) rules can be easily specified using EMF-IncQuery;
  • to demonstrate the generic integration capabilities of the IncQuery framework; that is, the ability to work with almost any EMF-based tool out-of-the-box, without having to touch the source code of the original tool.

It is a good idea to check the School example walkthrough before reading this page.

Running EMF-IncQuery as an RCP application

 

Outdated content

The contents of this page have been superseded by the following page on the Eclipse Wiki: 

Getting Started

The content of this page is deprecated, use the following sites instead:

Using queries for derived features (ECMFA12)

 

We demonstrate how our high performance queries can be easily integrated with other EMF tools using an entirely new case study in which EMF-IncQuery is deeply integrated into the EMF modeling infrastructure to facilitate the incremental evaluation of derived EAttributes and EReferences.

Introductory example: School

Overview

The aim of this page is to provide an easy-to-understand, step-by-step guide to EMF-IncQuery. For this purpose, the school example features a simple EMF model and some simple graph patterns to show the very basics of the query language and the core add-ons.

Obtaining the example

In the simple case, you can install the School example from the IncQuery Extra update site.

Alternatively (for advanced users): you will need two Eclipse workspaces to try this example.

Metamodel pattern matching example: Ecore Queries

Overview

Have you ever tried to query a meta-model, i.e. a model consisting of EClasses, EAttributes, and EReferences, against a meta-model pattern? For an example, look here. In this case, we want to look for a certain sub-configuration in an Ecore metamodel, where two EClasses (each having an EAttribute of type EString) are connected by a 0-* EReference.

EMF-IncQuery Examples and Demos

The examples below correspond to updated versions of the old examples.

Introductory example: school

The school example features a simple EMF model and some simple graph patterns to show the very basics of using EMF-IncQuery. Read this first before anything else!

Using queries for derived features

We demonstrate how our high performance queries can be easily integrated with other EMF tools using an entirely new case study in which EMF-IncQuery is deeply integrated into the EMF modeling infrastructure to facilitate the incremental evaluation of derived EAttributes and EReferences.

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