nulllogger.java

Mandarax是一个规则引擎的纯Java实现。它支持多类型的事实和基于反映的规则

/*
 * Copyright (C) 1999-2004 <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</a>
 *
 * 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 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.
 *
 * 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.mandarax.util.logging;

/**
 * Null logger - does nothing.
 * @see LoggerFactory
 * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
 * @version 3.4 <7 March 05>
 * @since 3.3
 */
public class NullLogger implements Logger {

	/**
	 * Constructor.
	 */
	NullLogger() {
		super();
	}
	/**
	 * Log an error.
	 * @param message a message
	 * @param exception an exception or error
	 */
	public void error(String message,Throwable exception) {
	}
	/**
	 * Log a warning.
	 * @param message a message
	 * @param exception an exception or error
	 */
	public void warn(String message,Throwable exception){
	}
	/**
	 * Log an info message.
	 * @param message a message
	 * @param exception an exception or error
	 */
	public void info(String message,Throwable exception) {
	}
	/**
	 * Log a debug message.
	 * @param message a message
	 * @param exception an exception or error
	 */
	public void debug(String message,Throwable exception) {
	}
	/**
	 * Log an error.
	 * @param message a message
	 */
	public void error(String message) {
	}
	/**
	 * Log a message.
	 * @param message a message
	 */
	public void warn(String message) {
	}
	/**
	 * Log a message.
	 * @param message a message
	 */
	public void info(String message) {
	}
	/**
	 * Log a message.
	 * @param message a message
	 */
	public void debug(String message) {
	}
	/**
	 * Indicates whether logging on the DEBUG level is enabled.
	 * @return a boolean
	 */
	public boolean isDebugEnabled() {
		return false;
	}
	/**
	 * Indicates whether logging on the INFO level is enabled.
	 * @return a boolean
	 */
	public boolean isInfoEnabled() {
		return true;
	}

}