communitylistservlet.java

dspace 用j2ee架构的一个数字图书馆.开源程序

/*
 * CommunityListServlet.java
 *
 * Version: $Revision: 1.10 $
 *
 * Date: $Date: 2005/04/20 14:22:35 $
 *
 * Copyright (c) 2002-2005, Hewlett-Packard Company and Massachusetts
 * Institute of Technology.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Hewlett-Packard Company nor the name of the
 * Massachusetts Institute of Technology nor the names of their
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package org.dspace.app.webui.servlet;

import java.io.IOException;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.dspace.app.webui.util.JSPManager;
import org.dspace.authorize.AuthorizeException;
import org.dspace.authorize.AuthorizeManager;
import org.dspace.content.Collection;
import org.dspace.content.Community;
import org.dspace.core.Context;
import org.dspace.core.LogManager;

/**
 * Servlet for listing communities (and collections within them)
 * 
 * @author Robert Tansley
 * @version $Revision: 1.10 $
 */
public class CommunityListServlet extends DSpaceServlet
{
    /** log4j category */
    private static Logger log = Logger.getLogger(CommunityListServlet.class);

    protected void doDSGet(Context context, HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException,
            SQLException, AuthorizeException
    {
        log.info(LogManager.getHeader(context, "view_community_list", ""));

        // This will map community IDs to arrays of collections
        Map colMap = new HashMap();

        // This will map communityIDs to arrays of sub-communities
        Map commMap = new HashMap();

        Community[] communities = Community.findAllTop(context);

        for (int com = 0; com < communities.length; com++)
        {
            Integer comID = new Integer(communities[com].getID());

            // Find collections in community
            Collection[] colls = communities[com].getCollections();
            colMap.put(comID, colls);

            // Find subcommunties in community
            Community[] comms = communities[com].getSubcommunities();
            commMap.put(comID, comms);
        }

        // can they admin communities?
        if (AuthorizeManager.isAdmin(context))
        {
            // set a variable to create an edit button
            request.setAttribute("admin_button", new Boolean(true));
        }

        request.setAttribute("communities", communities);
        request.setAttribute("collections.map", colMap);
        request.setAttribute("subcommunities.map", commMap);
        JSPManager.showJSP(request, response, "/community-list.jsp");
    }
}