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Incremental execution of EVL constraints

This project requires Java 11.

Please make sure that you have it installed before continuing.

Demo from Eclipse

To run the example model editors with integrated incremental validation using EVL:

  • Open an Eclipse instance and import the projects in bundles, tests, releng, and these projects in examples:
    • org.eclipse.epsilon.examples.metamodels.flowchart
    • org.eclipse.epsilon.examples.metamodels.flowchart.validation
    • org.eclipse.epsilon.examples.metamodels.components
    • org.eclipse.epsilon.examples.metamodels.components.validation.incremental
  • Open the org.eclipse.epsilon.target.target target file in org.eclipse.epsilon.evl.emf.validation.incremental.targetplatform, and set it as the target platform.
  • Run the launch configuration in org.eclipse.epsilon.evl.emf.validation.incremental.

To try out the incremental validation from the nested workbench:

  • Open the MyFlowcharts.flowcharts model with the sample reflective Ecore model editor. Right-click on the root of the model, and enable "Live Validation". Try editing the name of an action to the empty string or a single letter.
  • Open the diagram in the representations.aird file, right-click on the background, and select "Validate diagram". Repeat this as needed to re-validate.
  • You can similarly open the representations.aird file in the components.model.manual and components.model.generated example projects.

Accessing the flowchart model with the tree-editor

Live validation uses the Sample Reflective Ecore Model Editor tree-based editor, which may not open the flowchart model by default.

To open the flowchart model with the editor, right-click ‘MyFlowcharts.flowcharts’, select 'Open With', then 'Other...' from the menu. Type 'Sample' to filter the list of editors and left-click 'Sample Reflective Ecore Model Editor', then click 'OK'.

The editor should open in the main window displaying a node labelled 'platform:/resource...', right-click this node. From the menu check the box 'Live Validation'. When the model's tree is expanded small red boxes with a white X will be placed on the node icons where a constraint is unsatisfied.

The example projects for the component models work in the same way, except you will need to open the relevant .ccl file instead.

Building from console

Install Maven, and run this command from the root of the repository:

mvn install

Logging configuration

To change the level of detail for the logging, edit the logging.properties file in the org.eclipse.epsilon.evl.emf.validation.incremental project.

Benchmarking

To run the performance benchmarks comparing batch and incremental validation, run the run-benchmarks.sh shell script.

The benchmarks are written using the OpenJDK JMH microbenchmarking framework. They are located within the benchmarks project.

To work on this project, import the project into your main Eclipse instance: it is best edited from Eclipse, but it has to be run from the above shell script. You will need to install IvyDE, right-click on the project in the "Package Explorer" Eclipse view, and select "Ivy - Retrieve dependencies...".

For further details on how to develop JMH microbenchmarks, check the official samples.