private String getBundles(boolean defaultAuto) {
    StringBuffer buffer = new StringBuffer();
    Iterator iter = fModels.keySet().iterator();
    while (iter.hasNext()) {
      IMonitorModelBase model = (IMonitorModelBase) iter.next();
      String id = model.getMonitorBase().getId();
      if (!IPDEBuildConstants.BUNDLE_OSGI.equals(id)) {
        if (buffer.length() > 0) buffer.append(","); // $NON-NLS-1$
        buffer.append(LaunchConfigurationHelper.getBundleURL(model, true));

        // fragments must not be started or have a start level
        if (model instanceof IFragmentModel) continue;

        String data = fModels.get(model).toString();
        appendStartData(buffer, data, defaultAuto);
      }
    }
    return buffer.toString();
  }
  private void saveConfigurationFile(ILaunchConfiguration configuration) throws CoreException {
    Properties properties = new Properties();
    properties.setProperty(
        "osgi.install.area", "file:" + TargetPlatform.getLocation()); // $NON-NLS-1$ //$NON-NLS-2$
    properties.setProperty("osgi.configuration.cascaded", "false"); // $NON-NLS-1$ //$NON-NLS-2$
    properties.put(
        "osgi.framework",
        LaunchConfigurationHelper.getBundleURL(
            IPDEBuildConstants.BUNDLE_OSGI, fAllBundles, false)); // $NON-NLS-1$
    int start = configuration.getAttribute(IPDELauncherConstants.DEFAULT_START_LEVEL, 4);
    properties.put("osgi.bundles.defaultStartLevel", Integer.toString(start)); // $NON-NLS-1$
    boolean autostart = configuration.getAttribute(IPDELauncherConstants.DEFAULT_AUTO_START, true);

    String bundles = null;
    if (fAllBundles.containsKey(IPDEBuildConstants.BUNDLE_SIMPLE_CONFIGURATOR)) {

      // If update configurator is set to its default start level, override it as simple/update
      // configurators should not be autostarted together
      Object updateConfiguratorBundle =
          fAllBundles.get(IPDEBuildConstants.BUNDLE_UPDATE_CONFIGURATOR);
      if (updateConfiguratorBundle != null) {
        String startLevel = (String) fModels.get(updateConfiguratorBundle);
        if (startLevel != null
            && startLevel.equals(BundleLauncherHelper.DEFAULT_UPDATE_CONFIGURATOR_START_LEVEL)) {
          fModels.put(updateConfiguratorBundle, "4:false"); // $NON-NLS-1$
        }
      }

      // If simple configurator is being used, we need to write out the bundles.txt instead of
      // writing out the list in the config.ini
      URL bundlesTxt =
          P2Utils.writeBundlesTxt(fModels, start, autostart, getConfigDir(configuration), null);
      if (bundlesTxt != null) {
        properties.setProperty(
            "org.eclipse.equinox.simpleconfigurator.configUrl",
            bundlesTxt.toString()); // $NON-NLS-1$
        if (fAllBundles.get(IPDEBuildConstants.BUNDLE_UPDATE_CONFIGURATOR) != null) {
          properties.setProperty(
              "org.eclipse.update.reconcile", "false"); // $NON-NLS-1$ //$NON-NLS-2$
        }
      }
      StringBuffer buffer = new StringBuffer();
      IMonitorModelBase model =
          (IMonitorModelBase) fAllBundles.get(IPDEBuildConstants.BUNDLE_SIMPLE_CONFIGURATOR);
      buffer.append(LaunchConfigurationHelper.getBundleURL(model, true));
      appendStartData(buffer, (String) fModels.get(model), autostart);
      bundles = buffer.toString();
    } else {
      bundles = getBundles(autostart);
    }
    if (bundles.length() > 0) properties.put("osgi.bundles", bundles); // $NON-NLS-1$

    if (!"3.3"
        .equals(
            configuration.getAttribute(
                IPDEConstants.LAUNCHER_PDE_VERSION, ""))) { // $NON-NLS-1$ //$NON-NLS-2$
      properties.put("eclipse.ignoreApp", "true"); // $NON-NLS-1$ //$NON-NLS-2$
      properties.put("osgi.noShutdown", "true"); // $NON-NLS-1$ //$NON-NLS-2$
    }

    LaunchConfigurationHelper.save(
        new File(getConfigDir(configuration), "config.ini"), properties); // $NON-NLS-1$
  }