001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.struts;
016    
017    import com.liferay.portal.kernel.servlet.ServletResponseUtil;
018    import com.liferay.portal.kernel.struts.BaseStrutsAction;
019    import com.liferay.portal.kernel.util.ContentTypes;
020    import com.liferay.portal.util.PortalUtil;
021    
022    import javax.servlet.http.HttpServletRequest;
023    import javax.servlet.http.HttpServletResponse;
024    
025    /**
026     * @author Iv??n Zaera
027     */
028    public abstract class BaseRSSStrutsAction extends BaseStrutsAction {
029    
030            @Override
031            public String execute(
032                            HttpServletRequest request, HttpServletResponse response)
033                    throws Exception {
034    
035                    if (!isRSSFeedsEnabled(request)) {
036                            PortalUtil.sendRSSFeedsDisabledError(request, response);
037    
038                            return null;
039                    }
040    
041                    try {
042                            ServletResponseUtil.sendFile(
043                                    request, response, null, getRSS(request),
044                                    ContentTypes.TEXT_XML_UTF8);
045    
046                            return null;
047                    }
048                    catch (Exception e) {
049                            PortalUtil.sendError(e, request, response);
050    
051                            return null;
052                    }
053            }
054    
055            protected abstract byte[] getRSS(HttpServletRequest request)
056                    throws Exception;
057    
058            protected boolean isRSSFeedsEnabled(HttpServletRequest request)
059                    throws Exception {
060    
061                    return PortalUtil.isRSSFeedsEnabled();
062            }
063    
064    }