com.liferay.portlet.messageboards.action.RSSAction.java Source code

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Here is the source code for com.liferay.portlet.messageboards.action.RSSAction.java

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/**
 * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
 *
 * This library 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 library 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.
 */

package com.liferay.portlet.messageboards.action;

import com.liferay.portal.kernel.dao.search.SearchContainer;
import com.liferay.portal.kernel.servlet.ServletResponseUtil;
import com.liferay.portal.kernel.util.ContentTypes;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portal.struts.ActionConstants;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.portal.util.PortalUtil;
import com.liferay.portal.util.WebKeys;
import com.liferay.portlet.messageboards.service.MBMessageServiceUtil;
import com.liferay.util.RSSUtil;

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

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

/**
 * @author Brian Wing Shun Chan
 */
public class RSSAction extends Action {

    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
            HttpServletResponse response) throws Exception {

        try {
            ServletResponseUtil.sendFile(request, response, null, getRSS(request), ContentTypes.TEXT_XML_UTF8);

            return mapping.findForward(ActionConstants.COMMON_NULL);
        } catch (Exception e) {
            PortalUtil.sendError(e, request, response);

            return null;
        }
    }

    protected byte[] getRSS(HttpServletRequest request) throws Exception {
        ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY);

        String plid = ParamUtil.getString(request, "p_l_id");
        long companyId = ParamUtil.getLong(request, "companyId");
        long groupId = ParamUtil.getLong(request, "groupId");
        long userId = ParamUtil.getLong(request, "userId");
        long categoryId = ParamUtil.getLong(request, "mbCategoryId");
        long threadId = ParamUtil.getLong(request, "threadId");
        int max = ParamUtil.getInteger(request, "max", SearchContainer.DEFAULT_DELTA);
        String type = ParamUtil.getString(request, "type", RSSUtil.TYPE_DEFAULT);
        double version = ParamUtil.getDouble(request, "version", RSSUtil.VERSION_DEFAULT);
        String displayStyle = ParamUtil.getString(request, "displayStyle", RSSUtil.DISPLAY_STYLE_FULL_CONTENT);

        String entryURL = themeDisplay.getPortalURL() + themeDisplay.getPathMain()
                + "/message_boards/find_message?p_l_id=" + plid;

        String rss = StringPool.BLANK;

        if (companyId > 0) {
            String feedURL = StringPool.BLANK;

            rss = MBMessageServiceUtil.getCompanyMessagesRSS(companyId, WorkflowConstants.STATUS_APPROVED, max,
                    type, version, displayStyle, feedURL, entryURL, themeDisplay);
        } else if (groupId > 0) {
            String feedURL = themeDisplay.getPortalURL() + themeDisplay.getPathMain()
                    + "/message_boards/find_recent_posts?p_l_id=" + plid;

            if (userId > 0) {
                rss = MBMessageServiceUtil.getGroupMessagesRSS(groupId, userId, WorkflowConstants.STATUS_APPROVED,
                        max, type, version, displayStyle, feedURL, entryURL, themeDisplay);
            } else {
                rss = MBMessageServiceUtil.getGroupMessagesRSS(groupId, WorkflowConstants.STATUS_APPROVED, max,
                        type, version, displayStyle, feedURL, entryURL, themeDisplay);
            }
        } else if (categoryId > 0) {
            String feedURL = themeDisplay.getPortalURL() + themeDisplay.getPathMain()
                    + "/message_boards/find_category?p_l_id=" + plid + "&mbCategoryId=" + categoryId;

            rss = MBMessageServiceUtil.getCategoryMessagesRSS(groupId, categoryId,
                    WorkflowConstants.STATUS_APPROVED, max, type, version, displayStyle, feedURL, entryURL,
                    themeDisplay);
        } else if (threadId > 0) {
            String feedURL = themeDisplay.getPortalURL() + themeDisplay.getPathMain()
                    + "/message_boards/find_thread?p_l_id=" + plid + "&threadId=" + threadId;

            rss = MBMessageServiceUtil.getThreadMessagesRSS(threadId, WorkflowConstants.STATUS_APPROVED, max, type,
                    version, displayStyle, feedURL, entryURL, themeDisplay);
        }

        return rss.getBytes(StringPool.UTF8);
    }

}