Java tutorial
/* * This library is part of OpenCms - * the Open Source Content Management System * * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) * * 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. * * For further information about Alkacon Software, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.opencms.pdftools; import org.opencms.main.CmsLog; import java.util.HashMap; import java.util.Map; import java.util.logging.Level; import org.apache.commons.logging.Log; import org.xhtmlrenderer.util.XRLog; import org.xhtmlrenderer.util.XRLogger; /** * Adaspter for sending xhtmlrenderer (flyingsaucer) log messages to the OpenCms log.<p> * * The log channels to which the log messages are sent start with the prefix 'org.opencms.' so that no * change in the log configuration is needed to make error messages appear in the log.<p> */ public class CmsXRLogAdapter implements XRLogger { /** The prefix used for log channels. */ public static final String OCMS_PREFIX = "org.opencms."; /** Default logger name. */ private static final String DEFAULT_LOGGER_NAME = "org.xhtmlrenderer.other"; /** The logger name map. */ private static final Map<Object, String> LOGGER_NAME_MAP; static { LOGGER_NAME_MAP = new HashMap<Object, String>(); LOGGER_NAME_MAP.put(XRLog.CONFIG, "org.xhtmlrenderer.config"); LOGGER_NAME_MAP.put(XRLog.EXCEPTION, "org.xhtmlrenderer.exception"); LOGGER_NAME_MAP.put(XRLog.GENERAL, "org.xhtmlrenderer.general"); LOGGER_NAME_MAP.put(XRLog.INIT, "org.xhtmlrenderer.init"); LOGGER_NAME_MAP.put(XRLog.JUNIT, "org.xhtmlrenderer.junit"); LOGGER_NAME_MAP.put(XRLog.LOAD, "org.xhtmlrenderer.load"); LOGGER_NAME_MAP.put(XRLog.MATCH, "org.xhtmlrenderer.match"); LOGGER_NAME_MAP.put(XRLog.CASCADE, "org.xhtmlrenderer.cascade"); LOGGER_NAME_MAP.put(XRLog.XML_ENTITIES, "org.xhtmlrenderer.load.xmlentities"); LOGGER_NAME_MAP.put(XRLog.CSS_PARSE, "org.xhtmlrenderer.cssparse"); LOGGER_NAME_MAP.put(XRLog.LAYOUT, "org.xhtmlrenderer.layout"); LOGGER_NAME_MAP.put(XRLog.RENDER, "org.xhtmlrenderer.render"); } /** * @see org.xhtmlrenderer.util.XRLogger#log(java.lang.String, java.util.logging.Level, java.lang.String) */ public void log(String where, Level level, String msg) { Log log = CmsLog.getLog(getLoggerName(where)); sendMessageToLogger(level, msg, log, null); } /** * @see org.xhtmlrenderer.util.XRLogger#log(java.lang.String, java.util.logging.Level, java.lang.String, java.lang.Throwable) */ public void log(String where, Level level, String msg, Throwable th) { Log log = CmsLog.getLog(getLoggerName(where)); sendMessageToLogger(level, msg, log, th); } /** * @see org.xhtmlrenderer.util.XRLogger#setLevel(java.lang.String, java.util.logging.Level) */ public void setLevel(String logger, Level level) { throw new UnsupportedOperationException("setLevel not supported"); } /** * Gets the real logger name.<p> * * @param xrLoggerName the XR logger name * * @return the real logger name */ private String getLoggerName(String xrLoggerName) { String result = LOGGER_NAME_MAP.get(xrLoggerName); if (result != null) { return OCMS_PREFIX + result; } else { return OCMS_PREFIX + DEFAULT_LOGGER_NAME; } } /** * Sends a log message to the commons-logging interface.<p> * * @param level the log level * @param message the message * @param log the commons logging log object * @param e a throwable or null */ private void sendMessageToLogger(Level level, String message, Log log, Throwable e) { if (e == null) { if (level == Level.SEVERE) { log.error(message); } else if (level == Level.WARNING) { log.warn(message); } else if (level == Level.INFO) { log.info(message); } else if (level == Level.CONFIG) { log.info(message); } else if ((level == Level.FINE) || (level == Level.FINER) || (level == Level.FINEST)) { log.debug(message); } else { log.info(message); } } else { if (level == Level.SEVERE) { log.error(message, e); } else if (level == Level.WARNING) { log.warn(message, e); } else if (level == Level.INFO) { log.info(message, e); } else if (level == Level.CONFIG) { log.info(message, e); } else if ((level == Level.FINE) || (level == Level.FINER) || (level == Level.FINEST)) { log.debug(message, e); } else { log.info(message, e); } } } }