Eclipse plugin to fix -plugincustomization option

/**
 * This is an Eclipse plugin fixing an issue with the built-in eclipse.ini file and
 * the option -plugincustomization /path/to/plugincustomization.ini where a few option
 * are not read properly.

 * You can now store Eclipse perspectives properly, code cleanups, formatters aswell, maven M2E external install
 * Also take cares to recurse into configuration nodes
 *
 * More infos or have questions use this link : https://bugs.eclipse.org/bugs/show_bug.cgi?id=281487
 */
public class Main implements IStartup {

    @SuppressWarnings("serial")
    private final Map<String, String> buggedNameSpace = new HashMap<String, String>() {
        {
            // this.put("org.eclipse.jdt.ui",
            // "sp_cleanup|java_|semanticHighlighting|editor_save_participant_org|formatter_|org.eclipse.jdt.ui.formatterprofiles");
            this.put("org.eclipse.jdt.ui", "sp_cleanup|java_|semanticHighlighting|editor_save_participant_org");
            this.put("org.eclipse.e4.ui.css.swt.theme", null);
            this.put("org.eclipse.e4.ui.workbench.renderers.swt", null);
            this.put("org.eclipse.wst.jsdt.ui", "java_|semanticHighlighting");
            this.put("org.eclipse.jst.jsp.ui", null);
            this.put("org.eclipse.wst.dtd.ui", null);
            this.put("org.eclipse.wst.xml.ui", null);
            this.put("org.eclipse.wst.xsl.ui", null);
            this.put("org.eclipse.wst.css.ui", null);
            this.put("org.eclipse.wst.html.ui", null);
            this.put("org.eclipse.ant.ui", "org.eclipse.ant.ui");
            this.put("org.eclipse.ui.workbench", "SDR");
            this.put("org.eclipse.m2e.core", null);
        }
    };

    @Override
    public void earlyStartup() {

        final Iterator<Entry<String, String>> it = this.buggedNameSpace.entrySet().iterator();

        while (it.hasNext()) {
            final Map.Entry<String, String> pair = it.next();
            final String nameSpace = pair.getKey();
            final String[] filters = StringUtils.split(pair.getValue(), "|");

            this.start(nameSpace, filters);

            it.remove();
        }

    }

    private void start(final String nameSpace, final String[] filters) {
        final Preferences pluginCustomizationPreferences = DefaultScope.INSTANCE.getNode(nameSpace);
        final Preferences workspacePreferences = InstanceScope.INSTANCE.getNode(nameSpace);

        try {
            if (pluginCustomizationPreferences.childrenNames() != null && pluginCustomizationPreferences.childrenNames().length > 0) {
                for (int i = 0; i < pluginCustomizationPreferences.childrenNames().length; i++) {
                    final String newNameSpace = nameSpace + "/" + pluginCustomizationPreferences.childrenNames()[i];
                    if (StringUtils.isNotBlank(newNameSpace)) {
                        this.start(newNameSpace, filters);
                    }
                }
            }
        } catch (final BackingStoreException e1) {
            e1.printStackTrace();
        }

        try {
            for (final String key : pluginCustomizationPreferences.keys()) {
                final String defaultPluginCustomizationValue = pluginCustomizationPreferences.get(key, StringUtils.EMPTY);
                if (StringUtils.isNotBlank(defaultPluginCustomizationValue) && (filters == null || StringUtils.startsWithAny(key, filters))) {
                    workspacePreferences.put(key, defaultPluginCustomizationValue);
                }
            }
            workspacePreferences.flush();
        } catch (final Exception e) {
            e.printStackTrace();
        }

    }

}