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Puts together an ActiveMQ OSGi bundle

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/**
 * Copyright (c) 2004-2011 QOS.ch
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package org.slf4j.helpers;

import org.slf4j.ILoggerFactory;
import org.slf4j.Logger;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

/**
 * SubstituteLoggerFactory manages instances of {@link SubstituteLogger}.
 *
 * @author Ceki Gülcü
 * @author Chetan Mehrotra
 */
public class SubstituteLoggerFactory implements ILoggerFactory {

  final ConcurrentMap loggers = new ConcurrentHashMap();

  public Logger getLogger(String name) {
    SubstituteLogger logger = loggers.get(name);
    if (logger == null) {
      logger = new SubstituteLogger(name);
      SubstituteLogger oldLogger = loggers.putIfAbsent(name, logger);
      if (oldLogger != null)
        logger = oldLogger;
    }
    return logger;
  }

  public List getLoggerNames() {
    return new ArrayList(loggers.keySet());
  }

  public List getLoggers() {
    return new ArrayList(loggers.values());
  }

  public void clear() {
    loggers.clear();
  }
}