com.atolcd.repo.web.scripts.archive.ArchivedNodesDelete.java Source code

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Here is the source code for com.atolcd.repo.web.scripts.archive.ArchivedNodesDelete.java

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/*
 * Copyright (C) 2013 Atol Conseils et Dveloppements.
 * http://www.atolcd.com/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.atolcd.repo.web.scripts.archive;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.transaction.UserTransaction;

import org.alfresco.model.ContentModel;
import org.alfresco.repo.web.scripts.archive.AbstractArchivedNodeWebScript;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.service.cmr.repository.StoreRef;
import org.alfresco.service.cmr.search.ResultSet;
import org.alfresco.service.cmr.search.ResultSetRow;
import org.alfresco.service.cmr.search.SearchParameters;
import org.alfresco.service.cmr.search.SearchService;
import org.alfresco.web.bean.repository.Repository;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.extensions.webscripts.Cache;
import org.springframework.extensions.webscripts.Status;
import org.springframework.extensions.webscripts.WebScriptRequest;

/**
 * This class is the controller for the deletednodes.delete web script.
 *
 * @author Julien BERTHOUX
 */
public class ArchivedNodesDelete extends AbstractArchivedNodeWebScript {
    private static Log logger = LogFactory.getLog(ArchivedNodesDelete.class);

    public static final String PURGED_NODES = "purgedNodes";

    private static final String USERNAME = "username";

    private final static String USER_ATTR = Repository.escapeQName(ContentModel.PROP_ARCHIVED_BY);
    private final static String SEARCH_USERPREFIX = "@" + USER_ATTR + ":%s AND ";
    private final static String SEARCH_ALL = "ASPECT:\"%s\"";

    @Override
    protected Map<String, Object> executeImpl(WebScriptRequest req, Status status, Cache cache) {
        Map<String, Object> model = new HashMap<String, Object>();

        StoreRef storeRef = parseRequestForStoreRef(req);
        NodeRef nodeRef = parseRequestForNodeRef(req);

        List<NodeRef> nodesToBePurged = new ArrayList<NodeRef>();
        if (nodeRef != null) {
            // If there is a specific NodeRef, then that is the only Node that
            // should be purged.
            // In this case, the NodeRef points to the actual node to be purged
            // i.e. the node in
            // the archive store.
            nodesToBePurged.add(nodeRef);
        } else {
            // But if there is no specific NodeRef and instead there is only a
            // StoreRef, then
            // all nodes deleted by current user which were originally in that
            // StoreRef should be
            // purged.
            nodesToBePurged = filterDeletedNodes(storeRef, req.getParameter(USERNAME));
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Purging " + nodesToBePurged.size() + " nodes");
        }

        // Now having identified the nodes to be purged, we simply have to do
        // it.
        nodeArchiveService.purgeArchivedNodes(nodesToBePurged);

        model.put(PURGED_NODES, nodesToBePurged);

        return model;
    }

    /**
     * This method gets all deleted nodes for current user from the archive
     * which were originally contained within the specified StoreRef.
     */
    private List<NodeRef> filterDeletedNodes(StoreRef storeRef, String username) {
        List<NodeRef> deletedNodes = null;

        if (username != null && username.length() > 0) {

            UserTransaction tx = null;
            ResultSet results = null;

            try {

                tx = serviceRegistry.getTransactionService().getNonPropagatingUserTransaction(false);
                tx.begin();

                if (storeRef != null) {
                    String query = String.format(SEARCH_USERPREFIX, username)
                            + String.format(SEARCH_ALL, ContentModel.ASPECT_ARCHIVED);
                    SearchParameters sp = new SearchParameters();
                    sp.setLanguage(SearchService.LANGUAGE_LUCENE);
                    sp.setQuery(query);
                    sp.addStore(storeRef); // the Archived Node store

                    results = serviceRegistry.getSearchService().query(sp);
                    deletedNodes = new ArrayList<NodeRef>(results.length());
                }

                if (results != null && results.length() != 0) {
                    NodeService nodeService = serviceRegistry.getNodeService();

                    for (ResultSetRow row : results) {
                        NodeRef nodeRef = row.getNodeRef();

                        if (nodeService.exists(nodeRef)) {
                            deletedNodes.add(nodeRef);
                        }
                    }
                }

                tx.commit();
            } catch (Throwable err) {
                if (logger.isWarnEnabled())
                    logger.warn("Error while browsing the archive store: " + err.getMessage());
                try {
                    if (tx != null) {
                        tx.rollback();
                    }
                } catch (Exception tex) {
                    if (logger.isWarnEnabled())
                        logger.warn("Error while during the rollback: " + tex.getMessage());
                }
            } finally {
                if (results != null) {
                    results.close();
                }
            }
        }

        return deletedNodes;
    }
}