com.liferay.portlet.journal.action.GetArticleAction.java Source code

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Here is the source code for com.liferay.portlet.journal.action.GetArticleAction.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.journal.action;

import com.liferay.portal.kernel.language.LanguageUtil;
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.Validator;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portal.kernel.xml.Document;
import com.liferay.portal.kernel.xml.Element;
import com.liferay.portal.kernel.xml.Node;
import com.liferay.portal.kernel.xml.ProcessingInstruction;
import com.liferay.portal.kernel.xml.SAXReaderUtil;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.portal.util.PortalUtil;
import com.liferay.portal.util.WebKeys;
import com.liferay.portlet.dynamicdatamapping.util.DDMXMLUtil;
import com.liferay.portlet.journal.model.JournalArticle;
import com.liferay.portlet.journal.model.JournalTemplate;
import com.liferay.portlet.journal.model.JournalTemplateConstants;
import com.liferay.portlet.journal.service.JournalArticleServiceUtil;
import com.liferay.portlet.journal.service.JournalTemplateServiceUtil;
import com.liferay.portlet.journal.util.JournalUtil;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

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 Raymond Aug
 */
public class GetArticleAction extends Action {

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

        try {
            long groupId = ParamUtil.getLong(request, "groupId");
            String articleId = ParamUtil.getString(request, "articleId");

            String languageId = LanguageUtil.getLanguageId(request);

            JournalArticle article = JournalArticleServiceUtil.getLatestArticle(groupId, articleId,
                    WorkflowConstants.STATUS_APPROVED);

            ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY);

            Map<String, String> tokens = JournalUtil.getTokens(groupId, themeDisplay);

            String xml = article.getContentByLocale(languageId);

            Document doc = SAXReaderUtil.read(xml);

            Element root = doc.getRootElement();

            addProcessingInstructions(doc, request, themeDisplay, article);

            JournalUtil.addAllReservedEls(root, tokens, article, languageId);

            xml = DDMXMLUtil.formatXML(doc);

            String contentType = ContentTypes.TEXT_XML_UTF8;

            String fileName = null;
            byte[] bytes = xml.getBytes();

            ServletResponseUtil.sendFile(request, response, fileName, bytes, contentType);

            return null;
        } catch (Exception e) {
            PortalUtil.sendError(e, request, response);

            return null;
        }
    }

    protected void addProcessingInstructions(Document doc, HttpServletRequest request, ThemeDisplay themeDisplay,
            JournalArticle article) {

        // Add style sheets in the reverse order that they appear in the
        // document

        // Portal CSS

        String url = PortalUtil.getStaticResourceURL(request,
                themeDisplay.getCDNHost() + themeDisplay.getPathContext() + "/html/portal/css.jsp");

        Map<String, String> arguments = new LinkedHashMap<String, String>();

        arguments.put("type", "text/css");
        arguments.put("href", url);
        arguments.put("title", "portal css");
        arguments.put("alternate", "yes");

        addStyleSheet(doc, url, arguments);

        // Theme CSS

        url = PortalUtil.getStaticResourceURL(request, themeDisplay.getPathThemeCss() + "/main.css");

        arguments.clear();

        arguments.put("type", "text/css");
        arguments.put("href", url);
        arguments.put("title", "theme css");

        addStyleSheet(doc, url, arguments);

        // XSL template

        String templateId = article.getTemplateId();

        if (Validator.isNotNull(templateId)) {
            JournalTemplate template = null;

            try {
                template = JournalTemplateServiceUtil.getTemplate(article.getGroupId(), templateId);

                if (Validator.equals(template.getLangType(), JournalTemplateConstants.LANG_TYPE_XSL)) {

                    url = themeDisplay.getPathMain() + "/journal/get_template?groupId=" + article.getGroupId()
                            + "&templateId=" + templateId;

                    arguments.clear();

                    arguments.put("type", "text/xsl");
                    arguments.put("href", url);
                    arguments.put("title", "xsl");

                    addStyleSheet(doc, url, arguments);
                }
            } catch (Exception e) {
            }
        }
    }

    protected void addStyleSheet(Document doc, String url, Map<String, String> arguments) {

        List<Node> content = doc.content();

        ProcessingInstruction processingInstruction = SAXReaderUtil.createProcessingInstruction("xml-stylesheet",
                arguments);

        content.add(0, processingInstruction);
    }

}