Re: [p2-dev] multiple providers of the same capability

[Pascal Rapicault <Pascal_Rapicault@xxxxxxxxxx>]

I have committed the following test case to demonstrate the SWT fragment setup:
public class SWTFragment extends AbstractProvisioningTest {
public void testFragmentPickedByCapability() {
IRequiredCapability[] reqs = createRequiredCapabilities("swt.fragment", "swt.fragment", new VersionRange("[1.0.0, 2.0.0)"), null);
IInstallableUnit swt = createIU("SWT", reqs);

MetadataFactory.InstallableUnitDescription iud = new MetadataFactory.InstallableUnitDescription();
iud.setId("SWT.WIN32");
iud.setVersion(new Version("1.0.0"));
iud.setCapabilities(new IProvidedCapability[] {MetadataFactory.createProvidedCapability("swt.fragment", "swt.fragment", new Version(1, 0, 0))});
iud.setFilter("(os=win32)");
IInstallableUnit swtW = MetadataFactory.createInstallableUnit(iud);

MetadataFactory.InstallableUnitDescription iud2 = new MetadataFactory.InstallableUnitDescription();
iud.setId("SWT.LINUX");
iud.setVersion(new Version("1.0.0"));
iud.setCapabilities(new IProvidedCapability[] {MetadataFactory.createProvidedCapability("swt.fragment", "swt.fragment", new Version(1, 0, 0))});
iud.setFilter("(os=linux)");
IInstallableUnit swtL = MetadataFactory.createInstallableUnit(iud2);

createTestMetdataRepository(new IInstallableUnit[] {swt, swtL, swtW});
IProfile profile = "">class.getName());
IPlanner planner = createPlanner();

ProfileChangeRequest req = new ProfileChangeRequest(profile);
req.setProfileProperty("os", "win32");
req.addInstallableUnits(new IInstallableUnit[] {swt});
ProvisioningPlan plan = planner.getProvisioningPlan(req, null, null);
assertOK("plan", plan.getStatus());
Collector c = plan.getAdditions().query(new InstallableUnitQuery("SWT"), new Collector(), null);
plan.getAdditions().query(new InstallableUnitQuery("SWT.WIN32"), c, null);
assertEquals(2, c.size());
}
}

HTH
Igor Fedorenko ---04/09/2009 01:01:01 PM---This is a followup to my previous question about installing fragment bundles. I am trying to protot

From:	Igor Fedorenko <ifedorenko@xxxxxxxxxxxx>
To:	P2 developer discussions <p2-dev@xxxxxxxxxxx>
Date:	04/09/2009 01:01 PM
Subject:	Re: [p2-dev] multiple providers of the same capability

---

This is a followup to my previous question about installing fragment 
bundles. I am trying to prototype what Pascal has suggested -- add 
required org.eclipse.swt osgi.fragment capability (or any fragment, 
really). Unfortunately, this breaks if I have multiple applicable 
fragments in my repositories.

--
Regards,
Igor

Haigermoser, Helmut wrote:
> Ciao Igor :)
> That's work by design, if you require something and three providers are
> providing it then we consider all three provided packages equal. No
> matter which one we pick you'll always get the right one.
> 
> If you try to get a specific providers' package then the best way is to
> express a different dependency, or a more strict version range such that
> it can only be true by fulfilled by your provider...
> 
> (Pascal, plz. correct me if I'm wrong...)
> 
> HTH,
> Ciao, hh 
> 
> -----Original Message-----
> From: p2-dev-bounces@xxxxxxxxxxx [mailto:p2-dev-bounces@xxxxxxxxxxx] On
> Behalf Of Igor Fedorenko
> Sent: Thursday, April 09, 2009 4:12 PM
> To: P2 developer discussions
> Subject: [p2-dev] multiple providers of the same capability
> 
> Hello,
> 
> I have an installable unit that requires capability which has multiple
> providers. Is P2 expected to resolve and install all available providers
> when I tell it to install my IU?
> 
> This does not seem to be the case with P2 from 3.5M6. I tried a (split)
> java.package and osgi.fragment and in both cases P2 appears to pick one
> arbitrary provider. Example how to express such dependencies will be
> much appreciated.
> 
> --
> Regards,
> Igor

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