dk.netarkivet.harvester.webinterface.HarvestChannelAction.java Source code

Introduction

Here is the source code for dk.netarkivet.harvester.webinterface.HarvestChannelAction.java

Source

/*
 * #%L
 * Netarchivesuite - harvester
 * %%
 * Copyright (C) 2005 - 2014 The Royal Danish Library, the Danish State and University Library,
 *             the National Library of France and the Austrian National Library.
 * %%
 * 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 2.1 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 General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-2.1.html>.
 * #L%
 */

package dk.netarkivet.harvester.webinterface;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.PageContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import dk.netarkivet.common.exceptions.ArgumentNotValid;
import dk.netarkivet.common.exceptions.ForwardedToErrorPage;
import dk.netarkivet.common.utils.I18n;
import dk.netarkivet.common.webinterface.HTMLUtils;
import dk.netarkivet.harvester.datamodel.HarvestChannel;
import dk.netarkivet.harvester.datamodel.HarvestChannelDAO;
import dk.netarkivet.harvester.datamodel.HarvestDefinitionDAO;

/**
 * Abstract class representing web UI action for harvest channels.
 */
public abstract class HarvestChannelAction {

    public static enum ActionType {
        createHarvestChannel, mapHarvestToChannel
    }

    public final static String ACTION = "channelAction";
    public final static String CHANNEL_NAME = "channelName";
    public final static String HARVEST_ID = "harvestId";
    public final static String CHANNEL_ID = "channelId";
    public final static String SNAPSHOT = "channelIsSnapshot";
    public final static String COMMENTS = "channelComments";

    private static final Log log = LogFactory.getLog(HarvestChannelAction.class);

    /**
     * This method processes the request to determine which action it corresponds to and passes the request along
     * accordingly. Available actions are:
     * <ul>
     * <li>create harvest channel</li>
     * <li>map harvest definition to channel</li>
     * </ul>
     *
     * @param context the original servlet context of the request.
     * @param i18n the internationalisation to be used.
     * @throws ForwardedToErrorPage if an exception is thrown while carrying out the action.
     */
    public static void processRequest(PageContext context, I18n i18n) throws ForwardedToErrorPage {
        ArgumentNotValid.checkNotNull(context, "PageContext context");
        ArgumentNotValid.checkNotNull(i18n, "I18n i18n");
        log.debug("Processing request");
        HttpServletRequest request = (HttpServletRequest) context.getRequest();
        try {
            String action = request.getParameter(ACTION);
            if (action == null || action.isEmpty()) {
                return;
            }
            switch (ActionType.valueOf(action)) {
            case createHarvestChannel:
                String name = request.getParameter(CHANNEL_NAME);
                HTMLUtils.forwardOnEmptyParameter(context, CHANNEL_NAME);
                HarvestChannelDAO dao = HarvestChannelDAO.getInstance();
                dao.create(new HarvestChannel(name, false, false, request.getParameter(COMMENTS)));
                break;
            case mapHarvestToChannel:
                long harvestId = Long.parseLong(request.getParameter(HARVEST_ID));
                long channelId = Long.parseLong(request.getParameter(CHANNEL_ID));
                HarvestChannelDAO hcDao = HarvestChannelDAO.getInstance();
                HarvestDefinitionDAO hdDao = HarvestDefinitionDAO.getInstance();
                hdDao.mapToHarvestChannel(harvestId, hcDao.getById(channelId));
                break;
            default:
            }
        } catch (Throwable e) {
            HTMLUtils.forwardWithErrorMessage(context, i18n, e, "errormsg;harvest.channel.create.error");
            throw new ForwardedToErrorPage("Error in Harvest Channels", e);
        }
    }

}