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.knowledgebase.service; import aQute.bnd.annotation.ProviderType; import com.liferay.knowledgebase.model.KBArticleClp; import com.liferay.knowledgebase.model.KBCommentClp; import com.liferay.knowledgebase.model.KBFolderClp; import com.liferay.knowledgebase.model.KBTemplateClp; import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayInputStream; import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayOutputStream; import com.liferay.portal.kernel.log.Log; import com.liferay.portal.kernel.log.LogFactoryUtil; import com.liferay.portal.kernel.util.ClassLoaderObjectInputStream; import com.liferay.portal.kernel.util.PropsUtil; import com.liferay.portal.kernel.util.Validator; import com.liferay.portal.model.BaseModel; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.List; /** * @author Brian Wing Shun Chan */ @ProviderType public class ClpSerializer { public static String getServletContextName() { if (Validator.isNotNull(_servletContextName)) { return _servletContextName; } synchronized (ClpSerializer.class) { if (Validator.isNotNull(_servletContextName)) { return _servletContextName; } try { ClassLoader classLoader = ClpSerializer.class.getClassLoader(); Class<?> portletPropsClass = classLoader.loadClass("com.liferay.util.portlet.PortletProps"); Method getMethod = portletPropsClass.getMethod("get", new Class<?>[] { String.class }); String portletPropsServletContextName = (String) getMethod.invoke(null, "knowledge-base-portlet-deployment-context"); if (Validator.isNotNull(portletPropsServletContextName)) { _servletContextName = portletPropsServletContextName; } } catch (Throwable t) { if (_log.isInfoEnabled()) { _log.info("Unable to locate deployment context from portlet properties"); } } if (Validator.isNull(_servletContextName)) { try { String propsUtilServletContextName = PropsUtil.get("knowledge-base-portlet-deployment-context"); if (Validator.isNotNull(propsUtilServletContextName)) { _servletContextName = propsUtilServletContextName; } } catch (Throwable t) { if (_log.isInfoEnabled()) { _log.info("Unable to locate deployment context from portal properties"); } } } if (Validator.isNull(_servletContextName)) { _servletContextName = "knowledge-base-portlet"; } return _servletContextName; } } public static Object translateInput(BaseModel<?> oldModel) { Class<?> oldModelClass = oldModel.getClass(); String oldModelClassName = oldModelClass.getName(); if (oldModelClassName.equals(KBArticleClp.class.getName())) { return translateInputKBArticle(oldModel); } if (oldModelClassName.equals(KBCommentClp.class.getName())) { return translateInputKBComment(oldModel); } if (oldModelClassName.equals(KBFolderClp.class.getName())) { return translateInputKBFolder(oldModel); } if (oldModelClassName.equals(KBTemplateClp.class.getName())) { return translateInputKBTemplate(oldModel); } return oldModel; } public static Object translateInput(List<Object> oldList) { List<Object> newList = new ArrayList<Object>(oldList.size()); for (int i = 0; i < oldList.size(); i++) { Object curObj = oldList.get(i); newList.add(translateInput(curObj)); } return newList; } public static Object translateInputKBArticle(BaseModel<?> oldModel) { KBArticleClp oldClpModel = (KBArticleClp) oldModel; BaseModel<?> newModel = oldClpModel.getKBArticleRemoteModel(); newModel.setModelAttributes(oldClpModel.getModelAttributes()); return newModel; } public static Object translateInputKBComment(BaseModel<?> oldModel) { KBCommentClp oldClpModel = (KBCommentClp) oldModel; BaseModel<?> newModel = oldClpModel.getKBCommentRemoteModel(); newModel.setModelAttributes(oldClpModel.getModelAttributes()); return newModel; } public static Object translateInputKBFolder(BaseModel<?> oldModel) { KBFolderClp oldClpModel = (KBFolderClp) oldModel; BaseModel<?> newModel = oldClpModel.getKBFolderRemoteModel(); newModel.setModelAttributes(oldClpModel.getModelAttributes()); return newModel; } public static Object translateInputKBTemplate(BaseModel<?> oldModel) { KBTemplateClp oldClpModel = (KBTemplateClp) oldModel; BaseModel<?> newModel = oldClpModel.getKBTemplateRemoteModel(); newModel.setModelAttributes(oldClpModel.getModelAttributes()); return newModel; } public static Object translateInput(Object obj) { if (obj instanceof BaseModel<?>) { return translateInput((BaseModel<?>) obj); } else if (obj instanceof List<?>) { return translateInput((List<Object>) obj); } else { return obj; } } public static Object translateOutput(BaseModel<?> oldModel) { Class<?> oldModelClass = oldModel.getClass(); String oldModelClassName = oldModelClass.getName(); if (oldModelClassName.equals("com.liferay.knowledgebase.model.impl.KBArticleImpl")) { return translateOutputKBArticle(oldModel); } else if (oldModelClassName.endsWith("Clp")) { try { ClassLoader classLoader = ClpSerializer.class.getClassLoader(); Method getClpSerializerClassMethod = oldModelClass.getMethod("getClpSerializerClass"); Class<?> oldClpSerializerClass = (Class<?>) getClpSerializerClassMethod.invoke(oldModel); Class<?> newClpSerializerClass = classLoader.loadClass(oldClpSerializerClass.getName()); Method translateOutputMethod = newClpSerializerClass.getMethod("translateOutput", BaseModel.class); Class<?> oldModelModelClass = oldModel.getModelClass(); Method getRemoteModelMethod = oldModelClass .getMethod("get" + oldModelModelClass.getSimpleName() + "RemoteModel"); Object oldRemoteModel = getRemoteModelMethod.invoke(oldModel); BaseModel<?> newModel = (BaseModel<?>) translateOutputMethod.invoke(null, oldRemoteModel); return newModel; } catch (Throwable t) { if (_log.isInfoEnabled()) { _log.info("Unable to translate " + oldModelClassName, t); } } } if (oldModelClassName.equals("com.liferay.knowledgebase.model.impl.KBCommentImpl")) { return translateOutputKBComment(oldModel); } else if (oldModelClassName.endsWith("Clp")) { try { ClassLoader classLoader = ClpSerializer.class.getClassLoader(); Method getClpSerializerClassMethod = oldModelClass.getMethod("getClpSerializerClass"); Class<?> oldClpSerializerClass = (Class<?>) getClpSerializerClassMethod.invoke(oldModel); Class<?> newClpSerializerClass = classLoader.loadClass(oldClpSerializerClass.getName()); Method translateOutputMethod = newClpSerializerClass.getMethod("translateOutput", BaseModel.class); Class<?> oldModelModelClass = oldModel.getModelClass(); Method getRemoteModelMethod = oldModelClass .getMethod("get" + oldModelModelClass.getSimpleName() + "RemoteModel"); Object oldRemoteModel = getRemoteModelMethod.invoke(oldModel); BaseModel<?> newModel = (BaseModel<?>) translateOutputMethod.invoke(null, oldRemoteModel); return newModel; } catch (Throwable t) { if (_log.isInfoEnabled()) { _log.info("Unable to translate " + oldModelClassName, t); } } } if (oldModelClassName.equals("com.liferay.knowledgebase.model.impl.KBFolderImpl")) { return translateOutputKBFolder(oldModel); } else if (oldModelClassName.endsWith("Clp")) { try { ClassLoader classLoader = ClpSerializer.class.getClassLoader(); Method getClpSerializerClassMethod = oldModelClass.getMethod("getClpSerializerClass"); Class<?> oldClpSerializerClass = (Class<?>) getClpSerializerClassMethod.invoke(oldModel); Class<?> newClpSerializerClass = classLoader.loadClass(oldClpSerializerClass.getName()); Method translateOutputMethod = newClpSerializerClass.getMethod("translateOutput", BaseModel.class); Class<?> oldModelModelClass = oldModel.getModelClass(); Method getRemoteModelMethod = oldModelClass .getMethod("get" + oldModelModelClass.getSimpleName() + "RemoteModel"); Object oldRemoteModel = getRemoteModelMethod.invoke(oldModel); BaseModel<?> newModel = (BaseModel<?>) translateOutputMethod.invoke(null, oldRemoteModel); return newModel; } catch (Throwable t) { if (_log.isInfoEnabled()) { _log.info("Unable to translate " + oldModelClassName, t); } } } if (oldModelClassName.equals("com.liferay.knowledgebase.model.impl.KBTemplateImpl")) { return translateOutputKBTemplate(oldModel); } else if (oldModelClassName.endsWith("Clp")) { try { ClassLoader classLoader = ClpSerializer.class.getClassLoader(); Method getClpSerializerClassMethod = oldModelClass.getMethod("getClpSerializerClass"); Class<?> oldClpSerializerClass = (Class<?>) getClpSerializerClassMethod.invoke(oldModel); Class<?> newClpSerializerClass = classLoader.loadClass(oldClpSerializerClass.getName()); Method translateOutputMethod = newClpSerializerClass.getMethod("translateOutput", BaseModel.class); Class<?> oldModelModelClass = oldModel.getModelClass(); Method getRemoteModelMethod = oldModelClass .getMethod("get" + oldModelModelClass.getSimpleName() + "RemoteModel"); Object oldRemoteModel = getRemoteModelMethod.invoke(oldModel); BaseModel<?> newModel = (BaseModel<?>) translateOutputMethod.invoke(null, oldRemoteModel); return newModel; } catch (Throwable t) { if (_log.isInfoEnabled()) { _log.info("Unable to translate " + oldModelClassName, t); } } } return oldModel; } public static Object translateOutput(List<Object> oldList) { List<Object> newList = new ArrayList<Object>(oldList.size()); for (int i = 0; i < oldList.size(); i++) { Object curObj = oldList.get(i); newList.add(translateOutput(curObj)); } return newList; } public static Object translateOutput(Object obj) { if (obj instanceof BaseModel<?>) { return translateOutput((BaseModel<?>) obj); } else if (obj instanceof List<?>) { return translateOutput((List<Object>) obj); } else { return obj; } } public static Throwable translateThrowable(Throwable throwable) { if (_useReflectionToTranslateThrowable) { try { UnsyncByteArrayOutputStream unsyncByteArrayOutputStream = new UnsyncByteArrayOutputStream(); ObjectOutputStream objectOutputStream = new ObjectOutputStream(unsyncByteArrayOutputStream); objectOutputStream.writeObject(throwable); objectOutputStream.flush(); objectOutputStream.close(); UnsyncByteArrayInputStream unsyncByteArrayInputStream = new UnsyncByteArrayInputStream( unsyncByteArrayOutputStream.unsafeGetByteArray(), 0, unsyncByteArrayOutputStream.size()); Thread currentThread = Thread.currentThread(); ClassLoader contextClassLoader = currentThread.getContextClassLoader(); ObjectInputStream objectInputStream = new ClassLoaderObjectInputStream(unsyncByteArrayInputStream, contextClassLoader); throwable = (Throwable) objectInputStream.readObject(); objectInputStream.close(); return throwable; } catch (ClassNotFoundException cnfe) { if (_log.isInfoEnabled()) { _log.info("Do not use reflection to translate throwable"); } _useReflectionToTranslateThrowable = false; } catch (SecurityException se) { if (_log.isInfoEnabled()) { _log.info("Do not use reflection to translate throwable"); } _useReflectionToTranslateThrowable = false; } catch (Throwable throwable2) { _log.error(throwable2, throwable2); return throwable2; } } Class<?> clazz = throwable.getClass(); String className = clazz.getName(); if (className.equals("com.liferay.knowledgebase.DuplicateKBArticleUrlTitleException")) { return new com.liferay.knowledgebase.DuplicateKBArticleUrlTitleException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.DuplicateKBFolderNameException")) { return new com.liferay.knowledgebase.DuplicateKBFolderNameException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.InvalidKBArticleUrlTitleException")) { return new com.liferay.knowledgebase.InvalidKBArticleUrlTitleException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.InvalidKBFolderNameException")) { return new com.liferay.knowledgebase.InvalidKBFolderNameException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBArticleContentException")) { return new com.liferay.knowledgebase.KBArticleContentException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBArticleImportException")) { return new com.liferay.knowledgebase.KBArticleImportException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBArticleParentException")) { return new com.liferay.knowledgebase.KBArticleParentException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBArticlePriorityException")) { return new com.liferay.knowledgebase.KBArticlePriorityException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBArticleSourceURLException")) { return new com.liferay.knowledgebase.KBArticleSourceURLException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBArticleTitleException")) { return new com.liferay.knowledgebase.KBArticleTitleException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBCommentContentException")) { return new com.liferay.knowledgebase.KBCommentContentException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBTemplateContentException")) { return new com.liferay.knowledgebase.KBTemplateContentException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.KBTemplateTitleException")) { return new com.liferay.knowledgebase.KBTemplateTitleException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.NoSuchArticleException")) { return new com.liferay.knowledgebase.NoSuchArticleException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.NoSuchCommentException")) { return new com.liferay.knowledgebase.NoSuchCommentException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.NoSuchFolderException")) { return new com.liferay.knowledgebase.NoSuchFolderException(throwable.getMessage(), throwable.getCause()); } if (className.equals("com.liferay.knowledgebase.NoSuchTemplateException")) { return new com.liferay.knowledgebase.NoSuchTemplateException(throwable.getMessage(), throwable.getCause()); } return throwable; } public static Object translateOutputKBArticle(BaseModel<?> oldModel) { KBArticleClp newModel = new KBArticleClp(); newModel.setModelAttributes(oldModel.getModelAttributes()); newModel.setKBArticleRemoteModel(oldModel); return newModel; } public static Object translateOutputKBComment(BaseModel<?> oldModel) { KBCommentClp newModel = new KBCommentClp(); newModel.setModelAttributes(oldModel.getModelAttributes()); newModel.setKBCommentRemoteModel(oldModel); return newModel; } public static Object translateOutputKBFolder(BaseModel<?> oldModel) { KBFolderClp newModel = new KBFolderClp(); newModel.setModelAttributes(oldModel.getModelAttributes()); newModel.setKBFolderRemoteModel(oldModel); return newModel; } public static Object translateOutputKBTemplate(BaseModel<?> oldModel) { KBTemplateClp newModel = new KBTemplateClp(); newModel.setModelAttributes(oldModel.getModelAttributes()); newModel.setKBTemplateRemoteModel(oldModel); return newModel; } private static Log _log = LogFactoryUtil.getLog(ClpSerializer.class); private static String _servletContextName; private static boolean _useReflectionToTranslateThrowable = true; }