Java tutorial
/** * Copyright (c) 2000-present 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.journal.web.internal.portlet.action; import com.liferay.dynamic.data.mapping.model.DDMStructure; import com.liferay.dynamic.data.mapping.service.DDMStructureServiceUtil; import com.liferay.journal.exception.NoSuchArticleException; import com.liferay.journal.model.JournalArticle; import com.liferay.journal.model.JournalArticleConstants; import com.liferay.journal.model.JournalFeed; import com.liferay.journal.model.JournalFolder; import com.liferay.journal.model.JournalFolderConstants; import com.liferay.journal.service.JournalArticleLocalServiceUtil; import com.liferay.journal.service.JournalArticleServiceUtil; import com.liferay.journal.service.JournalFeedServiceUtil; import com.liferay.journal.service.JournalFolderServiceUtil; import com.liferay.journal.service.permission.JournalPermission; import com.liferay.journal.util.comparator.ArticleVersionComparator; import com.liferay.journal.util.impl.JournalUtil; import com.liferay.journal.web.internal.portlet.JournalPortlet; import com.liferay.portal.kernel.diff.CompareVersionsException; import com.liferay.portal.kernel.exception.PortalException; import com.liferay.portal.kernel.portlet.PortletRequestModel; import com.liferay.portal.kernel.security.permission.ActionKeys; import com.liferay.portal.kernel.service.ServiceContext; import com.liferay.portal.kernel.service.ServiceContextFactory; import com.liferay.portal.kernel.theme.ThemeDisplay; import com.liferay.portal.kernel.util.GetterUtil; import com.liferay.portal.kernel.util.HtmlUtil; import com.liferay.portal.kernel.util.LocaleUtil; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.PortalUtil; 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.util.WebKeys; 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.SAXReaderUtil; import com.liferay.portal.kernel.xml.XPath; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Locale; import java.util.Set; import javax.portlet.ActionRequest; import javax.portlet.PortletRequest; import javax.portlet.RenderRequest; import javax.portlet.RenderResponse; import javax.portlet.ResourceRequest; import javax.servlet.http.HttpServletRequest; /** * @author Brian Wing Shun Chan */ public class ActionUtil { public static void compareVersions(RenderRequest renderRequest, RenderResponse renderResponse) throws Exception { ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY); long groupId = ParamUtil.getLong(renderRequest, "groupId"); String articleId = ParamUtil.getString(renderRequest, "articleId"); String sourceArticleId = ParamUtil.getString(renderRequest, "sourceVersion"); int index = sourceArticleId.lastIndexOf(JournalPortlet.VERSION_SEPARATOR); if (index != -1) { sourceArticleId = sourceArticleId.substring(index + JournalPortlet.VERSION_SEPARATOR.length(), sourceArticleId.length()); } double sourceVersion = GetterUtil.getDouble(sourceArticleId); String targetArticleId = ParamUtil.getString(renderRequest, "targetVersion"); index = targetArticleId.lastIndexOf(JournalPortlet.VERSION_SEPARATOR); if (index != -1) { targetArticleId = targetArticleId.substring(index + JournalPortlet.VERSION_SEPARATOR.length(), targetArticleId.length()); } double targetVersion = GetterUtil.getDouble(targetArticleId); if ((sourceVersion == 0) && (targetVersion == 0)) { List<JournalArticle> sourceArticles = JournalArticleServiceUtil.getArticlesByArticleId(groupId, articleId, 0, 1, new ArticleVersionComparator(false)); JournalArticle sourceArticle = sourceArticles.get(0); sourceVersion = sourceArticle.getVersion(); List<JournalArticle> targetArticles = JournalArticleServiceUtil.getArticlesByArticleId(groupId, articleId, 0, 1, new ArticleVersionComparator(true)); JournalArticle targetArticle = targetArticles.get(0); targetVersion = targetArticle.getVersion(); } if (sourceVersion > targetVersion) { double tempVersion = targetVersion; targetVersion = sourceVersion; sourceVersion = tempVersion; } String languageId = getLanguageId(renderRequest, groupId, articleId, sourceVersion, targetVersion); String diffHtmlResults = null; try { diffHtmlResults = JournalUtil.diffHtml(groupId, articleId, sourceVersion, targetVersion, languageId, new PortletRequestModel(renderRequest, renderResponse), themeDisplay); } catch (CompareVersionsException cve) { renderRequest.setAttribute(WebKeys.DIFF_VERSION, cve.getVersion()); } renderRequest.setAttribute(WebKeys.DIFF_HTML_RESULTS, diffHtmlResults); renderRequest.setAttribute(WebKeys.SOURCE_VERSION, sourceVersion); renderRequest.setAttribute(WebKeys.TARGET_VERSION, targetVersion); } public static void deleteArticle(ActionRequest actionRequest, String deleteArticleId) throws Exception { long groupId = ParamUtil.getLong(actionRequest, "groupId"); String articleId = deleteArticleId; String articleURL = ParamUtil.getString(actionRequest, "articleURL"); double version = 0; ServiceContext serviceContext = ServiceContextFactory.getInstance(JournalArticle.class.getName(), actionRequest); int pos = deleteArticleId.lastIndexOf(JournalPortlet.VERSION_SEPARATOR); if (pos == -1) { JournalArticleServiceUtil.deleteArticle(groupId, articleId, articleURL, serviceContext); } else { articleId = articleId.substring(0, pos); version = GetterUtil .getDouble(deleteArticleId.substring(pos + JournalPortlet.VERSION_SEPARATOR.length())); JournalArticleServiceUtil.deleteArticle(groupId, articleId, version, articleURL, serviceContext); } JournalUtil.removeRecentArticle(actionRequest, articleId, version); } public static void expireArticle(ActionRequest actionRequest, String expireArticleId) throws Exception { long groupId = ParamUtil.getLong(actionRequest, "groupId"); String articleId = expireArticleId; String articleURL = ParamUtil.getString(actionRequest, "articleURL"); double version = 0; ServiceContext serviceContext = ServiceContextFactory.getInstance(JournalArticle.class.getName(), actionRequest); int pos = expireArticleId.lastIndexOf(JournalPortlet.VERSION_SEPARATOR); if (pos == -1) { JournalArticleServiceUtil.expireArticle(groupId, articleId, articleURL, serviceContext); } else { articleId = articleId.substring(0, pos); version = GetterUtil .getDouble(expireArticleId.substring(pos + JournalPortlet.VERSION_SEPARATOR.length())); JournalArticleServiceUtil.expireArticle(groupId, articleId, version, articleURL, serviceContext); } JournalUtil.removeRecentArticle(actionRequest, articleId, version); } public static void expireFolder(long groupId, long parentFolderId, ServiceContext serviceContext) throws Exception { List<JournalFolder> folders = JournalFolderServiceUtil.getFolders(groupId, parentFolderId); for (JournalFolder folder : folders) { expireFolder(groupId, folder.getFolderId(), serviceContext); } List<JournalArticle> articles = JournalArticleServiceUtil.getArticles(groupId, parentFolderId); for (JournalArticle article : articles) { JournalArticleServiceUtil.expireArticle(groupId, article.getArticleId(), null, serviceContext); } } public static JournalArticle getArticle(HttpServletRequest request) throws PortalException { String actionName = ParamUtil.getString(request, ActionRequest.ACTION_NAME); ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY); long resourcePrimKey = ParamUtil.getLong(request, "resourcePrimKey"); long groupId = ParamUtil.getLong(request, "groupId", themeDisplay.getScopeGroupId()); long classNameId = ParamUtil.getLong(request, "classNameId"); long classPK = ParamUtil.getLong(request, "classPK"); String articleId = ParamUtil.getString(request, "articleId"); String ddmStructureKey = ParamUtil.getString(request, "ddmStructureKey"); int status = ParamUtil.getInteger(request, "status", WorkflowConstants.STATUS_ANY); JournalArticle article = null; if (actionName.equals("addArticle") && (resourcePrimKey != 0)) { article = JournalArticleLocalServiceUtil.getLatestArticle(resourcePrimKey, status, false); } else if (!actionName.equals("addArticle") && Validator.isNotNull(articleId)) { article = JournalArticleServiceUtil.getLatestArticle(groupId, articleId, status); } else if ((classNameId > 0) && (classPK > JournalArticleConstants.CLASSNAME_ID_DEFAULT)) { String className = PortalUtil.getClassName(classNameId); try { article = JournalArticleServiceUtil.getLatestArticle(groupId, className, classPK); } catch (NoSuchArticleException nsae) { return null; } } else { DDMStructure ddmStructure = DDMStructureServiceUtil.fetchStructure(groupId, PortalUtil.getClassNameId(JournalArticle.class), ddmStructureKey, true); if (ddmStructure == null) { return null; } try { article = JournalArticleServiceUtil.getArticle(ddmStructure.getGroupId(), DDMStructure.class.getName(), ddmStructure.getStructureId()); article.setNew(true); article.setId(0); article.setGroupId(groupId); article.setClassNameId(JournalArticleConstants.CLASSNAME_ID_DEFAULT); article.setClassPK(0); article.setArticleId(null); article.setVersion(0); } catch (NoSuchArticleException nsae) { return null; } } return article; } public static JournalArticle getArticle(PortletRequest portletRequest) throws Exception { HttpServletRequest request = PortalUtil.getHttpServletRequest(portletRequest); JournalArticle article = getArticle(request); JournalUtil.addRecentArticle(portletRequest, article); return article; } public static List<JournalArticle> getArticles(ResourceRequest request) throws Exception { long groupId = ParamUtil.getLong(request, "groupId"); String[] articleIds = ParamUtil.getStringValues(request, "rowIdsJournalArticle"); List<JournalArticle> articles = new ArrayList<>(); for (String articleId : articleIds) { JournalArticle article = JournalArticleServiceUtil.getArticle(groupId, articleId); articles.add(article); } return articles; } public static JournalFeed getFeed(HttpServletRequest request) throws Exception { long groupId = ParamUtil.getLong(request, "groupId"); String feedId = ParamUtil.getString(request, "feedId"); JournalFeed feed = null; if (Validator.isNotNull(feedId)) { feed = JournalFeedServiceUtil.getFeed(groupId, feedId); } return feed; } public static JournalFeed getFeed(PortletRequest portletRequest) throws Exception { HttpServletRequest request = PortalUtil.getHttpServletRequest(portletRequest); return getFeed(request); } public static JournalFolder getFolder(HttpServletRequest request) throws PortalException { ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY); long folderId = ParamUtil.getLong(request, "folderId"); JournalFolder folder = null; if ((folderId > 0) && (folderId != JournalFolderConstants.DEFAULT_PARENT_FOLDER_ID)) { folder = JournalFolderServiceUtil.fetchFolder(folderId); } else { JournalPermission.check(themeDisplay.getPermissionChecker(), themeDisplay.getScopeGroupId(), ActionKeys.VIEW); } return folder; } public static JournalFolder getFolder(PortletRequest portletRequest) throws PortalException { HttpServletRequest request = PortalUtil.getHttpServletRequest(portletRequest); return getFolder(request); } public static List<JournalFolder> getFolders(ResourceRequest request) throws Exception { long[] folderIds = ParamUtil.getLongValues(request, "rowIdsJournalFolder"); List<JournalFolder> folders = new ArrayList<>(); for (long folderId : folderIds) { JournalFolder folder = JournalFolderServiceUtil.getFolder(folderId); folders.add(folder); } return folders; } public static JournalArticle getPreviewArticle(PortletRequest portletRequest) throws Exception { long groupId = ParamUtil.getLong(portletRequest, "groupId"); String articleId = ParamUtil.getString(portletRequest, "articleId"); double version = ParamUtil.getDouble(portletRequest, "version", JournalArticleConstants.VERSION_DEFAULT); JournalArticle article = JournalArticleServiceUtil.getArticle(groupId, articleId, version); JournalUtil.addRecentArticle(portletRequest, article); return article; } public static boolean hasArticle(ActionRequest actionRequest) throws Exception { ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest.getAttribute(WebKeys.THEME_DISPLAY); String articleId = ParamUtil.getString(actionRequest, "articleId"); if (Validator.isNull(articleId)) { String[] articleIds = StringUtil.split(ParamUtil.getString(actionRequest, "rowIds")); if (articleIds.length <= 0) { return false; } articleId = articleIds[0]; } int pos = articleId.lastIndexOf(JournalPortlet.VERSION_SEPARATOR); if (pos != -1) { articleId = articleId.substring(0, pos); } JournalArticle article = JournalArticleLocalServiceUtil.fetchArticle(themeDisplay.getScopeGroupId(), articleId); if (article == null) { return false; } return true; } protected static String getElementInstanceId(String content, String fieldName, int index) throws Exception { Document document = SAXReaderUtil.read(content); String xPathExpression = "//dynamic-element[@name = " + HtmlUtil.escapeXPathAttribute(fieldName) + "]"; XPath xPath = SAXReaderUtil.createXPath(xPathExpression); List<Node> nodes = xPath.selectNodes(document); if (index > nodes.size()) { return StringPool.BLANK; } Element dynamicElementElement = (Element) nodes.get(index); return dynamicElementElement.attributeValue("instance-id"); } protected static String getLanguageId(RenderRequest renderRequest, long groupId, String articleId, double sourceVersion, double targetVersion) throws Exception { JournalArticle sourceArticle = JournalArticleLocalServiceUtil.fetchArticle(groupId, articleId, sourceVersion); JournalArticle targetArticle = JournalArticleLocalServiceUtil.fetchArticle(groupId, articleId, targetVersion); Set<Locale> locales = new HashSet<>(); for (String locale : sourceArticle.getAvailableLanguageIds()) { locales.add(LocaleUtil.fromLanguageId(locale)); } for (String locale : targetArticle.getAvailableLanguageIds()) { locales.add(LocaleUtil.fromLanguageId(locale)); } String languageId = ParamUtil.get(renderRequest, "languageId", targetArticle.getDefaultLanguageId()); Locale locale = LocaleUtil.fromLanguageId(languageId); if (!locales.contains(locale)) { languageId = targetArticle.getDefaultLanguageId(); } renderRequest.setAttribute(WebKeys.AVAILABLE_LOCALES, locales); renderRequest.setAttribute(WebKeys.LANGUAGE_ID, languageId); return languageId; } }