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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 java.util.HashMap;
import java.util.Map;

import org.slf4j.IMarkerFactory;
import org.slf4j.Marker;

/**
 * An almost trivial implementation of the {@link IMarkerFactory}
 * interface which creates {@link BasicMarker} instances.
 * 
 * 

Simple logging systems can conform to the SLF4J API by binding * {@link org.slf4j.MarkerFactory} with an instance of this class. * * @author Ceki Gülcü */ public class BasicMarkerFactory implements IMarkerFactory { Map markerMap = new HashMap(); /** * Regular users should not create * BasicMarkerFactory instances. Marker * instances can be obtained using the static {@link * org.slf4j.MarkerFactory#getMarker} method. */ public BasicMarkerFactory() { } /** * Manufacture a {@link BasicMarker} instance by name. If the instance has been * created earlier, return the previously created instance. * * @param name the name of the marker to be created * @return a Marker instance */ public synchronized Marker getMarker(String name) { if (name == null) { throw new IllegalArgumentException("Marker name cannot be null"); } Marker marker = (Marker) markerMap.get(name); if (marker == null) { marker = new BasicMarker(name); markerMap.put(name, marker); } return marker; } /** * Does the name marked already exist? */ public synchronized boolean exists(String name) { if (name == null) { return false; } return markerMap.containsKey(name); } public boolean detachMarker(String name) { if(name == null) { return false; } return (markerMap.remove(name) != null); } public Marker getDetachedMarker(String name) { return new BasicMarker(name); } }





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