How can I obtain the version number of a custom Eclipse feature at runtime?

Question

I would like to display the version number of a custom Eclipse feature I am developing in the title bar of its perspective. Is there a way to obtain the version number from the runtime plugin and/or workbench?

Answer 1

Something like:

Platform.getBundle("my.feature.id").getHeaders().get("Bundle-Version");

should do the trick.

Note (from this thread) that it can not be used anywhere within the plugin itself:
this.getBundle() is not valid until AFTER super.start(BundleContext) has been called on your plugin.
So if you are using this.getBundle() within your constructor or within your start(BundleContext) before calling super.start() then it will return null.

---

If that fails, you have here a more complete "version":

public static String getPlatformVersion() {
  String version = null;

  try {
    Dictionary dictionary = 
      org.eclipse.ui.internal.WorkbenchPlugin.getDefault().getBundle().getHeaders();
    version = (String) dictionary.get("Bundle-Version"); //$NON-NLS-1$
  } catch (NoClassDefFoundError e) {
    version = getProductVersion();
  }

  return version;
}

public static String getProductVersion() {
  String version = null;

  try {
    // this approach fails in "Rational Application Developer 6.0.1"
    IProduct product = Platform.getProduct();
    String aboutText = product.getProperty("aboutText"); //$NON-NLS-1$

    String pattern = "Version: (.*)\n"; //$NON-NLS-1$
    Pattern p = Pattern.compile(pattern);
    Matcher m = p.matcher(aboutText);
    boolean found = m.find();

    if (found) {
      version = m.group(1);
    }
  } catch (Exception e) {

  }

  return version;
}