001/**
002 * Copyright (c) 2004-2011 QOS.ch
003 * All rights reserved.
004 *
005 * Permission is hereby granted, free  of charge, to any person obtaining
006 * a  copy  of this  software  and  associated  documentation files  (the
007 * "Software"), to  deal in  the Software without  restriction, including
008 * without limitation  the rights to  use, copy, modify,  merge, publish,
009 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
010 * permit persons to whom the Software  is furnished to do so, subject to
011 * the following conditions:
012 *
013 * The  above  copyright  notice  and  this permission  notice  shall  be
014 * included in all copies or substantial portions of the Software.
015 *
016 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
017 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
018 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
021 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
023 *
024 */
025package org.slf4j.impl;
026
027import org.slf4j.spi.MDCAdapter;
028
029/**
030 * This class is only a stub. Real implementations are found in 
031 * each SLF4J binding project, e.g. slf4j-nop, slf4j-log4j12 etc.
032 *
033 * @author Ceki Gülcü
034 */
035public class StaticMDCBinder {
036
037    /**
038     * The unique instance of this class.
039     */
040    public static final StaticMDCBinder SINGLETON = new StaticMDCBinder();
041
042    private StaticMDCBinder() {
043        throw new UnsupportedOperationException("This code should never make it into the jar");
044    }
045
046    /**
047     * Return the singleton of this class.
048     * 
049     * @return the StaticMDCBinder singleton
050     * @since 1.7.14
051     */
052    public static final StaticMDCBinder getSingleton() {
053        return SINGLETON;
054    }
055
056    /**
057     * Currently this method always returns an instance of 
058     * {@link StaticMDCBinder}.
059     */
060    public MDCAdapter getMDCA() {
061        throw new UnsupportedOperationException("This code should never make it into the jar");
062    }
063
064    public String getMDCAdapterClassStr() {
065        throw new UnsupportedOperationException("This code should never make it into the jar");
066    }
067}