| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| package org.apache.poi.util; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| /** |
| * An implementation of the {@link POILogger} using the |
| * Apache Commons Logging framework. Which itself can be configured to |
| * send log to various different log frameworks and even allows to create |
| * a small wrapper for custom log frameworks. |
| */ |
| public class CommonsLogger implements POILogger |
| { |
| private static final LogFactory _creator = LogFactory.getFactory(); |
| private Log log; |
| |
| @Override |
| public void initialize(final String cat) { |
| this.log = _creator.getInstance(cat); |
| } |
| |
| /** |
| * Log a message |
| * |
| * @param level One of DEBUG, INFO, WARN, ERROR, FATAL |
| * @param obj1 The object to log. |
| */ |
| @Override |
| public void _log(final int level, final Object obj1) { |
| // FIXME: What happens if level is in between two levels (an even number)? |
| // Should this be `if (level >= FATAL) ...`? |
| switch (level) { |
| case FATAL: |
| if (log.isFatalEnabled()) { |
| log.fatal(obj1); |
| } |
| break; |
| case ERROR: |
| if (log.isErrorEnabled()) { |
| log.error(obj1); |
| } |
| break; |
| case WARN: |
| if (log.isWarnEnabled()) { |
| log.warn(obj1); |
| } |
| break; |
| case INFO: |
| if (log.isInfoEnabled()) { |
| log.info(obj1); |
| } |
| break; |
| case DEBUG: |
| if (log.isDebugEnabled()) { |
| log.debug(obj1); |
| } |
| break; |
| default: |
| if (log.isTraceEnabled()) { |
| log.trace(obj1); |
| } |
| break; |
| } |
| } |
| |
| /** |
| * Log a message |
| * |
| * @param level One of DEBUG, INFO, WARN, ERROR, FATAL |
| * @param obj1 The object to log. This is converted to a string. |
| * @param exception An exception to be logged |
| */ |
| @Override |
| public void _log(final int level, final Object obj1, final Throwable exception) { |
| // FIXME: What happens if level is in between two levels (an even number)? |
| // Should this be `if (level >= FATAL) ...`? |
| switch (level) { |
| case FATAL: |
| if (log.isFatalEnabled()) { |
| if (obj1 != null) { |
| log.fatal(obj1, exception); |
| } else { |
| log.fatal(exception); |
| } |
| } |
| break; |
| case ERROR: |
| if (log.isErrorEnabled()) { |
| if (obj1 != null) { |
| log.error(obj1, exception); |
| } else { |
| log.error(exception); |
| } |
| } |
| break; |
| case WARN: |
| if (log.isWarnEnabled()) { |
| if (obj1 != null) { |
| log.warn(obj1, exception); |
| } else { |
| log.warn(exception); |
| } |
| } |
| break; |
| case INFO: |
| if (log.isInfoEnabled()) { |
| if (obj1 != null) { |
| log.info(obj1, exception); |
| } else { |
| log.info(exception); |
| } |
| } |
| break; |
| case DEBUG: |
| if (log.isDebugEnabled()) { |
| if (obj1 != null) { |
| log.debug(obj1, exception); |
| } else { |
| log.debug(exception); |
| } |
| } |
| break; |
| default: |
| if (log.isTraceEnabled()) { |
| if (obj1 != null) { |
| log.trace(obj1, exception); |
| } else { |
| log.trace(exception); |
| } |
| } |
| break; |
| } |
| } |
| |
| /** |
| * Check if a logger is enabled to log at the specified level |
| * |
| * @param level One of DEBUG, INFO, WARN, ERROR, FATAL |
| */ |
| @Override |
| public boolean check(final int level) |
| { |
| // FIXME: What happens if level is in between two levels (an even number)? |
| // Should this be `if (level >= FATAL) ...`? |
| switch (level) { |
| case FATAL: |
| return log.isFatalEnabled(); |
| case ERROR: |
| return log.isErrorEnabled(); |
| case WARN: |
| return log.isWarnEnabled(); |
| case INFO: |
| return log.isInfoEnabled(); |
| case DEBUG: |
| return log.isDebugEnabled(); |
| default: |
| return false; |
| } |
| } |
| } |
| |