Eclipse EMF Facet

Extending EMF Tools with Proposed EMF Facet

Jessica Thornsby

New Eclipse project will provide a dynamic extension mechanism for Eclipse Modeling Framework tools.

The EMF Facet component has been submitted as a new Eclipse project under the umbrella of the Eclipse Modeling Framework Technology (EMFT) project. The EMFT provides a unified set of modeling frameworks, tooling, and standards implementations for the model-based development technologies within the Eclipse ecosystem.

Tools based on the Eclipse Modeling Framework (EMF) use Ecore as a common standard, but extending the data structure used by an EMF tool usually requires altering its source code. The proposed EMF Facet would provide a dynamic extension mechanism for EMF tools, through new ‘facets,’ or viewpoints, on their underlying data. This should enable the extension of existing EMF tools without needing to change the source code.

The project proposal suggests various extension mechanisms. These include new types, attributes, operations and relations; and computing an extension by executing queries against an existing model. It is planned that EMF Facet will provide a dynamic customisation mechanism, meaning that different viewpoints can be interpreted and dynamically applied without needing to restart the tool.

The initial code contribution will come from the MoDisco project. More information is available at the project proposal.

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