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Papyrus/Neon Work Description/NewFeature/Papyrus Refactoring Service

Papyrus Refactoring Service


An UML model can contain several files and it can reference external models. When user makes an action as rename a file, Papyrus must ensure that all references are always consistent at the end of execution.

Use Cases

  • Rename Action
  • Move elements between model
  • Control Mode
  • Externalise Profile Application
    • Does the Refactoring action should be launched ?


Index Description
REQ_001 Have a central mechanism to manage Refactor operation
REQ_002 Can choice the scope of the refactor resolution


Based on Control Mode mechanism and Element Type service, the mechanism uses three notions:

Notion Description
Request It contains all necessary information to execute correctly the refactor.
Service It is the entry point for the mechanism and it takes Request to deliver commands. It knows all participants.
Participant It registers on service to provide a command according to input request.
Command It contains refactor operation.
Scope It limits the refactor operation. It takes three values: None, Project, Workspace.

Filter Participants

It is necessary to give the possibility to exclude a participant of an Refactoring action. A participant can be useful only during one kind of Refactoring Action. This type could be defined during creation of the Request and could be chosen among this set:

  • ALL
  • MOVE


The new mechanism adds a new plugin to contain all engines. This new plugin exposes an extension point.


Refactor plugin and dependency

A new plugin will be created to contain the Refactor service. To declare the service, this plugin must depend of org.eclipse.papyrus.infra.core which exposes the extension point to declare a Papyrus service. The Refactor service plugin exposes itself an extension point, to register participants of Refactor.

Extension Point

It permits to add new Participant to a refactor. This class must implement the interface IRefactorParticipant. The participant returns a command according of input request. The role of participant has to be clearly defined to know which side effect of Refactor, it resolves. The participant is dependent of its scope resolution.

User Interface


The service needs to know which is the refactor scope. The scope determines from where the refactor starts. The user interface lets to user to choice between three different scopes.

Scope Description
None It means that refactor doesn’t need to be executed.
Container It means that refactor uses all models present in container resource of the current model to resolve broken references.
Project It means that refactor uses all models present in Project to resolve broken references.
Workspace It means that refactor uses all model present in Workspace to resolve broken references.



The service must be call when an element change its location. The service must be in back-end and it must be triggered by particular events. The managing of save of external modifications like model files in other project must be made through the ResourceSetListener too. The Refactoring service can not depend of LifeCycleDependency because this introduces bad dependencies for a independent service.

Diagram of listeners for triggering of Refactoring service


The mechanism is similar as Control Mode or Element Type Edit service. From one request and the service, this one returns a command for the refactor. The service uses LTK API to perform UI interaction and perform refactoring.


Architecture of Refactor service

LTK Integration

LTK Integration


Sequence diagram of Refactor service

Refactoring Resolution

EMF Compare Integration

Integration of Model Resolver from EMF Compare

This integration of EMF Compare permits to use their ThreadedModelResolver with our Scope Resolution implementation.


Related Bugs

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