How to use

addContribution

method

in

org.eclipse.core.runtime.IExtensionRegistry

private void processDiscoveryCoreBundle(IExtensionRegistry registry) {
  // we must add a contribution from the core bundle so that we get the
  // extension point itself
  try {
    Bundle bundle = Platform.getBundle("org.eclipse.equinox.p2.discovery.compatibility"); //$NON-NLS-1$
    IContributor contributor = new RegistryContributor(bundle.getSymbolicName(), bundle.getSymbolicName(), null, null);
    try (InputStream inputStream = bundle.getEntry("plugin.xml").openStream()) { //$NON-NLS-1$
      registry.addContribution(inputStream, contributor, false, bundle.getSymbolicName(), null, token);
    }
  } catch (IOException e) {
    throw new IllegalStateException();
  }
}

private void processBundle(IExtensionRegistry registry, Directory.Entry entry, File bundleFile) throws IOException {
  JarFile jarFile = new JarFile(bundleFile);
  jars.add(jarFile);
  ZipEntry pluginXmlEntry = jarFile.getEntry("plugin.xml"); //$NON-NLS-1$
  if (pluginXmlEntry == null) {
    throw new IOException(Messages.DiscoveryRegistryStrategy_missing_pluginxml);
  }
  IContributor contributor = new RegistryContributor(bundleFile.getName(), bundleFile.getName(), null, null);
  if (((IDynamicExtensionRegistry) registry).hasContributor(contributor)) {
    jarFile.close();
    return;
  }
  contributorToJarFile.put(contributor, bundleFile);
  contributorToDirectoryEntry.put(contributor, entry);
  ResourceBundle translationBundle = loadTranslationBundle(jarFile);
  try (InputStream inputStream = jarFile.getInputStream(pluginXmlEntry)) {
    registry.addContribution(inputStream, contributor, false, bundleFile.getPath(), translationBundle, token);
  }
}

registry.addContribution(new BufferedInputStream(is), contributor, true, input.getPath(), null, fKey);

private void register() throws BundleException {
  IExtensionRegistry reg = RegistryFactory.getRegistry();
  Object registryUser = ((ExtensionRegistry) reg).getTemporaryUserToken();
  if (!reg.addContribution(getStreamForEntry(PLUGIN_XML), createContributor(), false, null, getPluginProperties(), registryUser)) {
    throw new BundleException("Could not add plugin: " + bundle.getSymbolicName(), BundleException.REJECTED_BY_HOOK);
  }
}

registry.addContribution(new ByteArrayInputStream(bogusDef.getBytes()), pointContributor, false, null, null, this);
  registry.addContribution(new BufferedInputStream(new FileInputStream(pxml)), contributor, false, null, null, this);
  IExtension[] extensions = registry.getExtensions(contributor);
  for (int i = 0; i < extensions.length; i++) {

IContributor contributor = ContributorFactoryOSGi.createContributor(bundle);
if (!((IDynamicExtensionRegistry)registry).hasContributor(contributor)) {
  registry.addContribution(new ByteArrayInputStream(EMPTY_PLUGIN_XML.getBytes()),
      contributor, false, null, null, ((ExtensionRegistry)registry)
          .getTemporaryUserToken());

registry.addContribution(pluginXMLInputStream, contributor, false, bundleSymbolicName, resourceBundle, null);

registry.addContribution(pluginXMLInputStream, contributor, false, bundleSymbolicName, resourceBundle, null);