Java tutorial
/** * 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.log.Log; import com.liferay.portal.kernel.log.LogFactoryUtil; import com.liferay.portal.kernel.servlet.ServletResponseUtil; import com.liferay.portal.kernel.util.ContentTypes; import com.liferay.portal.kernel.util.DateUtil; import com.liferay.portal.kernel.util.GetterUtil; import com.liferay.portal.kernel.util.OrderByComparator; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.util.StringUtil; 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.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.service.JournalArticleServiceUtil; import com.liferay.portlet.journal.util.JournalUtil; import com.liferay.portlet.journal.util.comparator.ArticleDisplayDateComparator; import com.liferay.portlet.journal.util.comparator.ArticleModifiedDateComparator; import java.text.DateFormat; import java.util.Date; 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 * @author Brian Wing Shun Chan */ public class GetArticlesAction extends Action { @Override public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { try { List<JournalArticle> articles = getArticles(request); String fileName = null; byte[] bytes = getContent(request, articles); ServletResponseUtil.sendFile(request, response, fileName, bytes, ContentTypes.TEXT_XML_UTF8); return null; } catch (Exception e) { PortalUtil.sendError(e, request, response); return null; } } protected List<JournalArticle> getArticles(HttpServletRequest request) throws Exception { long companyId = PortalUtil.getCompanyId(request); long groupId = ParamUtil.getLong(request, "groupId"); String articleId = null; Double version = null; String title = null; String description = null; String content = null; String type = ParamUtil.getString(request, "type"); String[] structureIds = StringUtil.split(ParamUtil.getString(request, "structureId")); String[] templateIds = StringUtil.split(ParamUtil.getString(request, "templateId")); Date displayDateGT = null; String displayDateGTParam = ParamUtil.getString(request, "displayDateGT"); if (Validator.isNotNull(displayDateGTParam)) { DateFormat displayDateGTFormat = DateUtil.getISOFormat(displayDateGTParam); displayDateGT = GetterUtil.getDate(displayDateGTParam, displayDateGTFormat); } if (_log.isDebugEnabled()) { _log.debug("displayDateGT is " + displayDateGT); } Date displayDateLT = null; String displayDateLTParam = ParamUtil.getString(request, "displayDateLT"); if (Validator.isNotNull(displayDateLTParam)) { DateFormat displayDateLTFormat = DateUtil.getISOFormat(displayDateLTParam); displayDateLT = GetterUtil.getDate(displayDateLTParam, displayDateLTFormat); } if (displayDateLT == null) { displayDateLT = new Date(); } if (_log.isDebugEnabled()) { _log.debug("displayDateLT is " + displayDateLT); } int status = WorkflowConstants.STATUS_APPROVED; Date reviewDate = null; boolean andOperator = true; int start = 0; int end = ParamUtil.getInteger(request, "delta", 5); String orderBy = ParamUtil.getString(request, "orderBy"); String orderByCol = ParamUtil.getString(request, "orderByCol", orderBy); String orderByType = ParamUtil.getString(request, "orderByType"); boolean orderByAsc = orderByType.equals("asc"); OrderByComparator obc = new ArticleModifiedDateComparator(orderByAsc); if (orderByCol.equals("display-date")) { obc = new ArticleDisplayDateComparator(orderByAsc); } return JournalArticleServiceUtil.search(companyId, groupId, 0, articleId, version, title, description, content, type, structureIds, templateIds, displayDateGT, displayDateLT, status, reviewDate, andOperator, start, end, obc); } protected byte[] getContent(HttpServletRequest request, List<JournalArticle> articles) throws Exception { long groupId = ParamUtil.getLong(request, "groupId"); String languageId = LanguageUtil.getLanguageId(request); ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY); Map<String, String> tokens = JournalUtil.getTokens(groupId, themeDisplay); Document resultsDoc = SAXReaderUtil.createDocument(StringPool.UTF8); Element resultSetEl = resultsDoc.addElement("result-set"); for (JournalArticle article : articles) { Element resultEl = resultSetEl.addElement("result"); Document articleDoc = SAXReaderUtil.read(article.getContentByLocale(languageId)); resultEl.content().add(articleDoc.getRootElement().createCopy()); resultEl = resultEl.element("root"); JournalUtil.addAllReservedEls(resultEl, tokens, article, languageId); } return DDMXMLUtil.formatXML(resultsDoc).getBytes(StringPool.UTF8); } private static Log _log = LogFactoryUtil.getLog(GetArticlesAction.class); }