UpdateModuleV10200.java

package org.onehippo.forge.weblogdemo.upgrade;

import java.util.ArrayList;
import java.util.List;

import javax.jcr.Node;
import javax.jcr.Property;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import javax.jcr.query.Query;

import org.apache.jackrabbit.value.StringValue;
import org.hippoecm.repository.ext.UpdaterContext;
import org.hippoecm.repository.ext.UpdaterItemVisitor;
import org.hippoecm.repository.ext.UpdaterModule;

/**
 * Updater for version 1.01.02 (Hippo CMS 7.4 / HST 2.05)
 * to 1.02.00 (Hippo CMS 7.6 / HST 2.20)
 */
public class UpdateModuleV10200 implements UpdaterModule {

    @Override
    public void register(UpdaterContext updaterContext) {
        updaterContext.registerName("weblogdemo-upgrade-v102a");
        updaterContext.registerStartTag("weblogdemo-v101b");
        updaterContext.registerEndTag("weblogdemo-v102a");
        updaterContext.registerAfter("v19a");

        removeCustomNewBlogFolderStructureQueries(updaterContext);
        removeOldInitializers(updaterContext);
        removeFacetSearchTags(updaterContext);
        updateGalleryType(updaterContext);
    }

    private void removeCustomNewBlogFolderStructureQueries(UpdaterContext updaterContext) {
        updaterContext.registerVisitor(
                new UpdaterItemVisitor.PathVisitor("/hippo:configuration/hippo:queries/hippo:templates") {
            @Override
            protected void leaving(Node node, int level) throws RepositoryException {
                removeChildNodeIfExists(node, "new-year-folder");
                removeChildNodeIfExists(node, "new-month-folder");
                removeChildNodeIfExists(node, "new-blogpost");
            }
        });
    }

    /**
     * Removes initialize nodes that should no longer be used
     *
     * @param updaterContext {@link UpdaterContext}
     */
    private void removeOldInitializers(UpdaterContext updaterContext) {
        updaterContext.registerVisitor(new UpdaterItemVisitor.PathVisitor("/hippo:configuration/hippo:initialize") {
            @Override
            protected void leaving(Node node, int level) throws RepositoryException {
                removeChildNodeIfExists(node, "hst-live");
                removeChildNodeIfExists(node, "hst-preview");
                removeChildNodeIfExists(node, "tagging-facetsearch");
                removeChildNodeIfExists(node, "custom-browserPerspective");
                removeChildNodeIfExists(node, "virtualhosts");
                removeChildNodeIfExists(node, "custom-thumbnail-size");
                removeChildNodeIfExists(node, "queries-new-year-folder");
                removeChildNodeIfExists(node, "queries-new-month-folder");
                removeChildNodeIfExists(node, "queries-new-blogpost");
            }
        });
    }

    /**
     * Updates existing content to use the new hippogallery:imageset
     *
     * @param updaterContext {@link UpdaterContext}
     */
    private void updateGalleryType(UpdaterContext updaterContext) {
        updaterContext.registerVisitor(new UpdaterItemVisitor.PathVisitor("/content/gallery") {
            @Override
            protected void leaving(Node node, int level) throws RepositoryException {
                if (!node.hasProperty("hippostd:gallerytype")) {
                    return;
                }
                Property property = node.getProperty("hippostd:gallerytype");
                Value[] values = property.getValues();
                List<Value> newValues = new ArrayList<Value>();
                for (Value value : values) {
                    if ("hippogallery:exampleImageSet".equals(value)) {
                        newValues.add(new StringValue("hippogallery:imageset"));
                    } else {
                        newValues.add(value);
                    }
                }
                property.setValue(newValues.toArray(new Value[newValues.size()]));
            }
        });

        updaterContext.registerVisitor(
                new UpdaterItemVisitor.QueryVisitor("//content/documents//*[@jcr:primaryType='hippostd:html']",
                        Query.XPATH) {
                    @Override
                    protected void leaving(Node node, int level) throws RepositoryException {
                        Property property = node.getProperty("hippostd:content");

                        String value = property.getString();
                        if (value != null) {
                            String newValue = value.replaceAll("hippogallery:picture", "hippogallery:original");
                            property.setValue(newValue);
                        }
                    }
                });
    }

    /**
     * Deletes the existing /tags Node which is changed from type facetsearch to facetselect
     *
     * @param updaterContext {@link UpdaterContext}
     */
    private void removeFacetSearchTags(UpdaterContext updaterContext) {
        updaterContext.registerVisitor(new UpdaterItemVisitor.PathVisitor("/tags") {
            @Override
            protected void leaving(Node node, int level) throws RepositoryException {
                node.remove();
            }
        });
    }

    private void removeChildNodeIfExists(Node node, String childToDelete) throws RepositoryException {
        if (node.hasNode(childToDelete)) {
            Node removeChild = node.getNode(childToDelete);
            removeChild.remove();
        }
    }
}