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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License. You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the license for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the license.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    package org.slf4j.helpers;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    import org.slf4j.IMarkerFactory;<a name="line.19"></a>
<FONT color="green">020</FONT>    import org.slf4j.Marker;<a name="line.20"></a>
<FONT color="green">021</FONT>    <a name="line.21"></a>
<FONT color="green">022</FONT>    import java.util.concurrent.ConcurrentHashMap;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.concurrent.ConcurrentMap;<a name="line.23"></a>
<FONT color="green">024</FONT>    <a name="line.24"></a>
<FONT color="green">025</FONT>    /**<a name="line.25"></a>
<FONT color="green">026</FONT>     *<a name="line.26"></a>
<FONT color="green">027</FONT>     */<a name="line.27"></a>
<FONT color="green">028</FONT>    public class Log4JMarkerFactory implements IMarkerFactory {<a name="line.28"></a>
<FONT color="green">029</FONT>    <a name="line.29"></a>
<FONT color="green">030</FONT>        private ConcurrentMap&lt;String, Marker&gt; markerMap = new ConcurrentHashMap&lt;String, Marker&gt;();<a name="line.30"></a>
<FONT color="green">031</FONT>    <a name="line.31"></a>
<FONT color="green">032</FONT>        public Marker getMarker(String name) {<a name="line.32"></a>
<FONT color="green">033</FONT>            if (name == null) {<a name="line.33"></a>
<FONT color="green">034</FONT>                throw new IllegalArgumentException("Marker name must not be null");<a name="line.34"></a>
<FONT color="green">035</FONT>            }<a name="line.35"></a>
<FONT color="green">036</FONT>            Marker marker = markerMap.get(name);<a name="line.36"></a>
<FONT color="green">037</FONT>            if (marker == null) {<a name="line.37"></a>
<FONT color="green">038</FONT>                marker = new MarkerWrapper(name);<a name="line.38"></a>
<FONT color="green">039</FONT>            }<a name="line.39"></a>
<FONT color="green">040</FONT>            return marker;<a name="line.40"></a>
<FONT color="green">041</FONT>        }<a name="line.41"></a>
<FONT color="green">042</FONT>    <a name="line.42"></a>
<FONT color="green">043</FONT>        public boolean exists(String name) {<a name="line.43"></a>
<FONT color="green">044</FONT>            return markerMap.containsKey(name);<a name="line.44"></a>
<FONT color="green">045</FONT>        }<a name="line.45"></a>
<FONT color="green">046</FONT>    <a name="line.46"></a>
<FONT color="green">047</FONT>        public boolean detachMarker(String name) {<a name="line.47"></a>
<FONT color="green">048</FONT>            return false;<a name="line.48"></a>
<FONT color="green">049</FONT>        }<a name="line.49"></a>
<FONT color="green">050</FONT>    <a name="line.50"></a>
<FONT color="green">051</FONT>        public Marker getDetachedMarker(String name) {<a name="line.51"></a>
<FONT color="green">052</FONT>            return new MarkerWrapper(name);<a name="line.52"></a>
<FONT color="green">053</FONT>        }<a name="line.53"></a>
<FONT color="green">054</FONT>    }<a name="line.54"></a>


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