/*
 * $Header: /home/cvspublic/jakarta-commons/logging/src/java/org/apache/commons/logging/impl/NoOpLog.java,v 1.2 2003/03/30 23:42:36 craigmcc Exp $
 * $Revision: 1.2 $
 * $Date: 2003/03/30 23:42:36 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */


package org.apache.commons.logging.impl;


import org.apache.commons.logging.Log;


/**
 * <p>Trivial implementation of Log that throws away all messages.  No
 * configurable system properties are supported.</p>
 *
 * @author <a href="mailto:sanders@apache.org">Scott Sanders</a>
 * @author Rod Waldhoff
 * @version $Id: NoOpLog.java,v 1.2 2003/03/30 23:42:36 craigmcc Exp $
 */
public final class NoOpLog implements Log {

    /** Convenience constructor */
    public NoOpLog() { }
    /** Base constructor */
    public NoOpLog(String name) { }
    /** Do nothing */
    public void trace(Object message) { }
    /** Do nothing */
    public void trace(Object message, Throwable t) { }
    /** Do nothing */
    public void debug(Object message) { }
    /** Do nothing */
    public void debug(Object message, Throwable t) { }
    /** Do nothing */
    public void info(Object message) { }
    /** Do nothing */
    public void info(Object message, Throwable t) { }
    /** Do nothing */
    public void warn(Object message) { }
    /** Do nothing */
    public void warn(Object message, Throwable t) { }
    /** Do nothing */
    public void error(Object message) { }
    /** Do nothing */
    public void error(Object message, Throwable t) { }
    /** Do nothing */
    public void fatal(Object message) { }
    /** Do nothing */
    public void fatal(Object message, Throwable t) { }

    /**
     * Debug is never enabled.
     *
     * @return false
     */
    public final boolean isDebugEnabled() { return false; }

    /**
     * Error is never enabled.
     *
     * @return false
     */
    public final boolean isErrorEnabled() { return false; }

    /**
     * Fatal is never enabled.
     *
     * @return false
     */
    public final boolean isFatalEnabled() { return false; }

    /**
     * Info is never enabled.
     *
     * @return false
     */
    public final boolean isInfoEnabled() { return false; }

    /**
     * Trace is never enabled.
     *
     * @return false
     */
    public final boolean isTraceEnabled() { return false; }

    /**
     * Warning is never enabled.
     *
     * @return false
     */
    public final boolean isWarnEnabled() { return false; }

}