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Querying for installed features [message #1404648]

Mon, 04 August 2014 16:37

Alex Kravets

Messages: 528
Registered: November 2009

Senior Member

Hello,

I want to search for specific features installed in my product. Reading about p2 Query language I did the following:

IQueryable<IInstallableUnit> queryable = ((IProfileRegistry) provisioningSession.getProvisioningAgent().getService(IProfileRegistry.SERVICE_NAME)).getProfile( profileId );
queryable.query(new IQuery<IInstallableUnit>() {

   public IQueryResult<IInstallableUnit> perform(Iterator<IInstallableUnit> iterator) {
					
      while(iterator.hasNext()){
         IInstallableUnit next = iterator.next();
	 System.out.println(next.toString());
      }
      return null;
   }

   public IExpression getExpression() {
      return null;
   }
}, null);

This returns what looks like plugins that are running, what should I use to get features in my product. I am specifically interested in those listed in "Installed Software" section of Installation Details dialog.

Also, when constructing an actual query, how can add regular expression to the query, something like:

QueryUtil.createMatchQuery(select(x | x.id == $0)", "org.eclipse.*");

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Re: Querying for installed features [message #1404649 is a reply to message #1404648]

Mon, 04 August 2014 16:53

Pascal Rapicault

Messages: 333
Registered: July 2009
Location: Ottawa

Senior Member

Check out the UserVisibleRootQuery class in the org.eclipse.equinox.p2.engine plugin. This will return the list of things that have been installed (whether they are plugins or features).
You can also check out the QueryUtil class for a bunch of helper methods to create "typical" queries.
HTH

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