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);

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