EDIT

eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/handler/FixClassificationHierarchyHandler.java -text

      <handler

            class="eu.etaxonomy.taxeditor.editor.handler.FixClassificationHierarchyHandler"

            commandId="eu.etaxonomy.taxeditor.editor.handler.FixClassificationHierarchyHandler">

      </handler>

      <command

            defaultHandler="eu.etaxonomy.taxeditor.editor.handler.FixClassificationHierarchyHandler"

            id="eu.etaxonomy.taxeditor.editor.handler.OpenFixClassificationHierarchyHandler"

            name="Fix Classification Hierarchy">

      </command>

package eu.etaxonomy.taxeditor.editor.handler;

import org.apache.log4j.Logger;

import org.eclipse.core.commands.AbstractHandler;

import org.eclipse.core.commands.ExecutionEvent;

import org.eclipse.core.commands.ExecutionException;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.ui.handlers.HandlerUtil;

import eu.etaxonomy.cdm.api.service.IClassificationService;

import eu.etaxonomy.cdm.model.taxon.Classification;

import eu.etaxonomy.taxeditor.model.MessagingUtils;

import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

public class FixClassificationHierarchyHandler extends AbstractHandler {

    private static final Logger logger = Logger.getLogger(FixClassificationHierarchyHandler.class);

    /*

     * (non-Javadoc)

     *

     * @see

     * org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.

     * ExecutionEvent)

     */

    @Override

    public Object execute(ExecutionEvent event) throws ExecutionException {

        boolean isChecklistEditorActivated = PreferencesUtil.getPreferenceStore().getBoolean(

                IPreferenceKeys.DISTRIBUTION_AREA_PREFRENCES_ACTIVE);

        if (isChecklistEditorActivated) {

            ISelection currentSelection = HandlerUtil.getCurrentSelection(event);

            if (currentSelection instanceof IStructuredSelection) {

                Object selectedElement = ((IStructuredSelection) currentSelection).getFirstElement();

                if (selectedElement instanceof Classification) {

                    Classification classification = (Classification) selectedElement;

                    try {

                        IClassificationService service = CdmStore.getService(IClassificationService.class);

                        // Map<String, List<TaxonNode>> sortedGenusList =

                        // service.getSortedGenusList(classification.getAllNodes());

                        Classification newClassification = service.createHierarchyInClassification(classification, null);

                        MessagingUtils.messageDialog("Fix Hierarchy successful",

                                FixClassificationHierarchyHandler.class, "Operation 'Fix Hierarchy' was successful. New classification is " + newClassification.getTitleCache());

                    } catch (Exception e) {

                        MessagingUtils.messageDialog("Failed to open Editor", FixClassificationHierarchyHandler.class,

                                "Could not open ChecklistView. The hierarchy is corrupted!", e);

                    }

                }

            }

        }

        return null;

    }

}

         <command

               commandId="eu.etaxonomy.taxeditor.editor.handler.OpenFixClassificationHierarchyHandler"

               label="Fix Classification Hierarchy"

               style="push">

            <visibleWhen

                  checkEnabled="true">

               <and>

                  <reference

                        definitionId="isShowExperimentalFeatures">

                  </reference>

                  <reference

                        definitionId="isClassification">

                  </reference>

               </and>

            </visibleWhen>

         </command>

   <propertyTester

         class="eu.etaxonomy.taxeditor.preference.PreferencePropertyTester"

         id="eu.etaxonomy.taxeditor.preferences.propertyTester"

         namespace="eu.etaxonomy.taxeditor.preferences.propertyTester"

         properties="isShowExperimentalFeatures"

         type="org.eclipse.jface.viewers.IStructuredSelection">

   </propertyTester>

      <definition

            id="isShowExperimentalFeatures">

         <with

               variable="selection">

            <test

                  property="eu.etaxonomy.taxeditor.preferences.propertyTester.isShowExperimentalFeatures">

            </test>

         </with>

      </definition>