org.jamwiki.servlets.CategoryServlet.java Source code

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Here is the source code for org.jamwiki.servlets.CategoryServlet.java

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/**
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, version 2.1, dated February 1999.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the latest version of the GNU Lesser General
 * Public License as published by the Free Software Foundation;
 *
 * 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 (LICENSE.txt); if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.jamwiki.servlets;

import java.util.LinkedHashMap;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jamwiki.WikiBase;
import org.jamwiki.WikiMessage;
import org.jamwiki.model.Category;
import org.jamwiki.model.Namespace;
import org.jamwiki.utils.Pagination;
import org.jamwiki.utils.WikiLogger;
import org.springframework.web.servlet.ModelAndView;

/**
 * Used for display a list of all categories that are currently in use for a
 * virtual wiki.
 */
public class CategoryServlet extends JAMWikiServlet {

    /** Logger for this class and subclasses. */
    private static final WikiLogger logger = WikiLogger.getLogger(CategoryServlet.class.getName());
    /** The name of the JSP file used to render the servlet output. */
    protected static final String JSP_CATEGORIES = "categories.jsp";

    /**
     *
     */
    public ModelAndView handleJAMWikiRequest(HttpServletRequest request, HttpServletResponse response,
            ModelAndView next, WikiPageInfo pageInfo) throws Exception {
        this.viewCategories(request, next, pageInfo);
        return next;
    }

    /**
     *
     */
    private void viewCategories(HttpServletRequest request, ModelAndView next, WikiPageInfo pageInfo)
            throws Exception {
        String virtualWiki = pageInfo.getVirtualWikiName();
        Pagination pagination = ServletUtil.loadPagination(request, next);
        List<Category> categoryObjects = WikiBase.getDataHandler().getAllCategories(virtualWiki, pagination);
        LinkedHashMap<String, String> categories = new LinkedHashMap<String, String>();
        for (Category category : categoryObjects) {
            String key = category.getName();
            String value = key.substring(Namespace.namespace(Namespace.CATEGORY_ID).getLabel(virtualWiki).length()
                    + Namespace.SEPARATOR.length());
            categories.put(key, value);
        }
        next.addObject("categoryCount", categories.size());
        next.addObject("categories", categories);
        if (categories.isEmpty()) {
            pageInfo.addMessage(new WikiMessage("allcategories.message.none"));
        }
        pageInfo.setPageTitle(new WikiMessage("allcategories.title"));
        pageInfo.setContentJsp(JSP_CATEGORIES);
        pageInfo.setSpecial(true);
    }
}