Discoverer extension point
A discoverer must have a name and provide an implementation of the Discoverer interface to be managed by DiscoverersManager. For each discoverer, a new entry in the MoDisco menu will be added. However, each discoverer should provide a resource filter to adapt the menu depending on a single selected element.
Description of information in the contract of the discoverer extension point :
- name - Required - information to identify a discoverer in the registry; it must be unique. This name will also be used to populate menu.
- class - Required - A class that implements the Discoverer interface to be managed and used by Discoverers manager. When a corresponding element has been selected (filter provided by informations in extension part), a model can usually be retrieved by calling method "discoverElement", and it returns an EMF Resource.
- path - Optional- To allow sub-menu path into root menu provided by Discoverers Manager. For example, if your path is "j2se5/filters", the provided menu will be : <root menu> -> j2se5 -> filters -> Your Discoverer name
The registry of discoverers references all discoverer extensions installed in the current Eclipse platform. DiscoversManager provides an access to this registry. There are two methods : one to retrieve all the discoverers and one to retrieve only one discoverer using its name to identify it.
/** * Accessor to all discoverers registered in DiscoverersManager * through extensions. * * @return the list of discoverers available in registry */ public static List<? extends Discoverer> getDiscoverers() /** * Accessor to one discoverer registered in DiscoverersManager * through extensions. * * @param discovererName name of a discoverer * @return the discoverer with specified name, * or null if there is no discoverer registered with specified name. */ public static Discoverer getDiscoverer(String discovererName)
The contextual menu will be completed dynamically when a discoverer is able to manage the selected resource. For example, when a java project is selected (instance of IJavaProject):
Launch configuration framework
The launch configuration framework provides a new type of launch configuration (named MoDisco Discoverers) accessible through the “Run Configurations …” menu.
And here is an example of a discovery configuration.
You will find a version of this plug-in in the SVN repository.
Here are installation instructions :
- Import the project in your workspace using a SVN client.
- Use the "export" menu to export this project as a plug-in (Deployable plug-ins and fragments) in your Eclipse installation. Don't forget to choose the "Package plug-ins as individual jar archives" option.
- Re-start your Eclipse to take this plug-in into account.
Connection parameters to the SVN repository: MoDisco/SVN.
First step: in your plug-in properties (plugin.xml or META-INF/MANIFEST.MF), add a dependency to plug-in “org.eclipse.gmt.modisco.discoverersmanager”.
Second step: create a class in your plug-in that implements the Discoverer interface provided by the DiscoverersManager plug-in. See the javadoc of this interface for details of methods.
Third step: in your plug-in properties (plugin.xml or META-INF/MANIFEST.MF), create a “discoverers” extension.
Fourth step: in discoverers extension, a discoverer declaration has been created automatically. You will have to fill element details to validate discoverer declaration.
Congratulations, your first discoverer has been successfully defined.
If you want to add several discoverers in your plug-in, first you will have to add a discoverer in your “discoverers” extension.
Then, you will have to fill element details to obtain a second valid discoverer.