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.portal.kernel.servlet; import com.liferay.petra.string.StringBundler; import com.liferay.petra.string.StringPool; import com.liferay.portal.kernel.portlet.LiferayPortletRequest; import com.liferay.portal.kernel.portlet.LiferayPortletSession; import com.liferay.portal.kernel.util.PortalUtil; import java.util.Collections; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import javax.portlet.PortletRequest; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; /** * @author Brian Wing Shun Chan * @author Shuyang Zhou * @author Raymond Aug */ public class SessionErrors { public static void add(HttpServletRequest httpServletRequest, Class<?> clazz) { add(_getPortalSession(httpServletRequest), clazz.getName()); } public static void add(HttpServletRequest httpServletRequest, Class<?> clazz, Object value) { add(_getPortalSession(httpServletRequest), clazz.getName(), value); } public static void add(HttpServletRequest httpServletRequest, String key) { add(_getPortalSession(httpServletRequest), key); } public static void add(HttpServletRequest httpServletRequest, String key, Object value) { add(_getPortalSession(httpServletRequest), key, value); } public static void add(HttpSession session, Class<?> clazz) { add(session, clazz.getName()); } public static void add(HttpSession session, Class<?> clazz, Object value) { add(session, clazz.getName(), value); } public static void add(HttpSession session, String key) { Map<String, Object> map = _getMap(session, _CLASS_NAME, true); if (map == null) { return; } map.put(key, key); } public static void add(HttpSession session, String key, Object value) { Map<String, Object> map = _getMap(session, _CLASS_NAME, true); if (map == null) { return; } map.put(key, value); } public static void add(PortletRequest portletRequest, Class<?> clazz) { add(portletRequest, clazz.getName()); } public static void add(PortletRequest portletRequest, Class<?> clazz, Object value) { add(portletRequest, clazz.getName(), value); } public static void add(PortletRequest portletRequest, String key) { Map<String, Object> map = _getMap(portletRequest, true); if (map == null) { return; } map.put(key, key); } public static void add(PortletRequest portletRequest, String key, Object value) { Map<String, Object> map = _getMap(portletRequest, true); if (map == null) { return; } map.put(key, value); } public static void clear(HttpServletRequest httpServletRequest) { clear(_getPortalSession(httpServletRequest)); } public static void clear(HttpSession session) { Map<String, Object> map = _getMap(session, _CLASS_NAME, false); if (map != null) { map.clear(); } } public static void clear(PortletRequest portletRequest) { Map<String, Object> map = _getMap(portletRequest, false); if (map != null) { map.clear(); } } public static boolean contains(HttpServletRequest httpServletRequest, Class<?> clazz) { return contains(_getPortalSession(httpServletRequest), clazz.getName()); } public static boolean contains(HttpServletRequest httpServletRequest, Class<?>[] classes) { return contains(_getPortalSession(httpServletRequest), classes); } public static boolean contains(HttpServletRequest httpServletRequest, String key) { return contains(_getPortalSession(httpServletRequest), key); } public static boolean contains(HttpSession session, Class<?> clazz) { return contains(session, clazz.getName()); } public static boolean contains(HttpSession session, Class<?>[] classes) { for (Class<?> clazz : classes) { if (contains(session, clazz.getName())) { return true; } } return false; } public static boolean contains(HttpSession session, String key) { Map<String, Object> map = _getMap(session, _CLASS_NAME, false); if (map == null) { return false; } return map.containsKey(key); } public static boolean contains(PortletRequest portletRequest, Class<?> clazz) { return contains(portletRequest, clazz.getName()); } public static boolean contains(PortletRequest portletRequest, Class<?>[] classes) { for (Class<?> clazz : classes) { if (contains(portletRequest, clazz.getName())) { return true; } } return false; } public static boolean contains(PortletRequest portletRequest, String key) { Map<String, Object> map = _getMap(portletRequest, false); if (map == null) { return false; } return map.containsKey(key); } public static Object get(HttpServletRequest httpServletRequest, Class<?> clazz) { return get(_getPortalSession(httpServletRequest), clazz.getName()); } public static Object get(HttpServletRequest httpServletRequest, String key) { return get(_getPortalSession(httpServletRequest), key); } public static Object get(HttpSession session, Class<?> clazz) { return get(session, clazz.getName()); } public static Object get(HttpSession session, String key) { Map<String, Object> map = _getMap(session, _CLASS_NAME, false); if (map == null) { return null; } return map.get(key); } public static Object get(PortletRequest portletRequest, Class<?> clazz) { return get(portletRequest, clazz.getName()); } public static Object get(PortletRequest portletRequest, String key) { Map<String, Object> map = _getMap(portletRequest, false); if (map == null) { return null; } return map.get(key); } public static boolean isEmpty(HttpServletRequest httpServletRequest) { return isEmpty(_getPortalSession(httpServletRequest)); } public static boolean isEmpty(HttpSession session) { Map<String, Object> map = _getMap(session, _CLASS_NAME, false); if (map == null) { return true; } return map.isEmpty(); } public static boolean isEmpty(PortletRequest portletRequest) { Map<String, Object> map = _getMap(portletRequest, false); if (map == null) { return true; } return map.isEmpty(); } public static Iterator<String> iterator(HttpServletRequest httpServletRequest) { return iterator(_getPortalSession(httpServletRequest)); } public static Iterator<String> iterator(HttpSession session) { Map<String, Object> map = _getMap(session, _CLASS_NAME, false); if (map == null) { List<String> list = Collections.<String>emptyList(); return list.iterator(); } Set<String> set = Collections.unmodifiableSet(map.keySet()); return set.iterator(); } public static Iterator<String> iterator(PortletRequest portletRequest) { Map<String, Object> map = _getMap(portletRequest, false); if (map == null) { List<String> list = Collections.<String>emptyList(); return list.iterator(); } Set<String> set = Collections.unmodifiableSet(map.keySet()); return set.iterator(); } public static Set<String> keySet(HttpServletRequest httpServletRequest) { return keySet(_getPortalSession(httpServletRequest)); } public static Set<String> keySet(HttpSession session) { Map<String, Object> map = _getMap(session, _CLASS_NAME, false); if (map == null) { return Collections.emptySet(); } return Collections.unmodifiableSet(map.keySet()); } public static Set<String> keySet(PortletRequest portletRequest) { Map<String, Object> map = _getMap(portletRequest, false); if (map == null) { return Collections.emptySet(); } return Collections.unmodifiableSet(map.keySet()); } public static void print(HttpServletRequest httpServletRequest) { print(_getPortalSession(httpServletRequest)); } public static void print(HttpSession session) { Iterator<String> itr = iterator(session); while (itr.hasNext()) { System.out.println(itr.next()); } } public static void print(PortletRequest portletRequest) { Iterator<String> itr = iterator(portletRequest); while (itr.hasNext()) { System.out.println(itr.next()); } } public static int size(HttpServletRequest httpServletRequest) { return size(_getPortalSession(httpServletRequest)); } public static int size(HttpSession session) { Map<String, Object> map = _getMap(session, _CLASS_NAME, false); if (map == null) { return 0; } return map.size(); } public static int size(PortletRequest portletRequest) { Map<String, Object> map = _getMap(portletRequest, false); if (map == null) { return 0; } return map.size(); } private static String _getKey(PortletRequest portletRequest) { StringBundler sb = new StringBundler(6); LiferayPortletRequest liferayPortletRequest = PortalUtil.getLiferayPortletRequest(portletRequest); sb.append(LiferayPortletSession.PORTLET_SCOPE_NAMESPACE); sb.append(liferayPortletRequest.getPortletName()); sb.append(LiferayPortletSession.LAYOUT_SEPARATOR); sb.append(liferayPortletRequest.getPlid()); sb.append(StringPool.QUESTION); sb.append(_CLASS_NAME); return sb.toString(); } private static Map<String, Object> _getMap(HttpSession session, String key, boolean createIfAbsent) { if (session == null) { return null; } try { Map<String, Object> map = (Map<String, Object>) session.getAttribute(key); if ((map == null) && createIfAbsent) { map = new HashMap<>(); session.setAttribute(key, map); } return map; } catch (IllegalStateException ise) { // Session is already invalidated, just return a null map return null; } } private static Map<String, Object> _getMap(PortletRequest portletRequest, boolean createIfAbsent) { return _getMap(_getPortalSession(portletRequest), _getKey(portletRequest), createIfAbsent); } private static HttpSession _getPortalSession(HttpServletRequest httpServletRequest) { HttpServletRequest originalHttpServletRequest = PortalUtil.getOriginalServletRequest(httpServletRequest); return originalHttpServletRequest.getSession(); } private static HttpSession _getPortalSession(PortletRequest portletRequest) { return _getPortalSession(PortalUtil.getHttpServletRequest(portletRequest)); } private static final String _CLASS_NAME = SessionErrors.class.getName(); }