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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.apache.logging.log4j.core.pattern;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    import org.apache.logging.log4j.core.LogEvent;<a name="line.19"></a>
<FONT color="green">020</FONT>    import org.apache.logging.log4j.core.config.plugins.Plugin;<a name="line.20"></a>
<FONT color="green">021</FONT>    import org.apache.logging.log4j.message.MapMessage;<a name="line.21"></a>
<FONT color="green">022</FONT>    <a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.Map;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.Set;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.TreeSet;<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>     * Able to handle the contents of the LogEvent's MapMessage and either<a name="line.28"></a>
<FONT color="green">029</FONT>     * output the entire contents of the properties in a similar format to the<a name="line.29"></a>
<FONT color="green">030</FONT>     * java.util.Hashtable.toString(), or to output the value of a specific key<a name="line.30"></a>
<FONT color="green">031</FONT>     * within the Map.<a name="line.31"></a>
<FONT color="green">032</FONT>     */<a name="line.32"></a>
<FONT color="green">033</FONT>    @Plugin(name = "MapPatternConverter", type = "Converter")<a name="line.33"></a>
<FONT color="green">034</FONT>    @ConverterKeys({"K", "map", "MAP" })<a name="line.34"></a>
<FONT color="green">035</FONT>    public final class MapPatternConverter extends LogEventPatternConverter {<a name="line.35"></a>
<FONT color="green">036</FONT>        /**<a name="line.36"></a>
<FONT color="green">037</FONT>         * Name of property to output.<a name="line.37"></a>
<FONT color="green">038</FONT>         */<a name="line.38"></a>
<FONT color="green">039</FONT>        private final String key;<a name="line.39"></a>
<FONT color="green">040</FONT>    <a name="line.40"></a>
<FONT color="green">041</FONT>        /**<a name="line.41"></a>
<FONT color="green">042</FONT>         * Private constructor.<a name="line.42"></a>
<FONT color="green">043</FONT>         *<a name="line.43"></a>
<FONT color="green">044</FONT>         * @param options options, may be null.<a name="line.44"></a>
<FONT color="green">045</FONT>         */<a name="line.45"></a>
<FONT color="green">046</FONT>        private MapPatternConverter(final String[] options) {<a name="line.46"></a>
<FONT color="green">047</FONT>            super(((options != null) &amp;&amp; (options.length &gt; 0)) ? ("MAP{" + options[0] + "}") : "MAP", "map");<a name="line.47"></a>
<FONT color="green">048</FONT>            key = (options != null &amp;&amp; options.length &gt; 0) ? options[0] : null;<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>        /**<a name="line.51"></a>
<FONT color="green">052</FONT>         * Obtains an instance of PropertiesPatternConverter.<a name="line.52"></a>
<FONT color="green">053</FONT>         *<a name="line.53"></a>
<FONT color="green">054</FONT>         * @param options options, may be null or first element contains name of property to format.<a name="line.54"></a>
<FONT color="green">055</FONT>         * @return instance of PropertiesPatternConverter.<a name="line.55"></a>
<FONT color="green">056</FONT>         */<a name="line.56"></a>
<FONT color="green">057</FONT>        public static MapPatternConverter newInstance(final String[] options) {<a name="line.57"></a>
<FONT color="green">058</FONT>            return new MapPatternConverter(options);<a name="line.58"></a>
<FONT color="green">059</FONT>        }<a name="line.59"></a>
<FONT color="green">060</FONT>    <a name="line.60"></a>
<FONT color="green">061</FONT>        /**<a name="line.61"></a>
<FONT color="green">062</FONT>         * {@inheritDoc}<a name="line.62"></a>
<FONT color="green">063</FONT>         */<a name="line.63"></a>
<FONT color="green">064</FONT>        public void format(final LogEvent event, final StringBuilder toAppendTo) {<a name="line.64"></a>
<FONT color="green">065</FONT>            MapMessage msg;<a name="line.65"></a>
<FONT color="green">066</FONT>            if (event.getMessage() instanceof MapMessage) {<a name="line.66"></a>
<FONT color="green">067</FONT>                msg = (MapMessage) event.getMessage();<a name="line.67"></a>
<FONT color="green">068</FONT>            } else {<a name="line.68"></a>
<FONT color="green">069</FONT>                return;<a name="line.69"></a>
<FONT color="green">070</FONT>            }<a name="line.70"></a>
<FONT color="green">071</FONT>            Map&lt;String, String&gt; map = msg.getData();<a name="line.71"></a>
<FONT color="green">072</FONT>            // if there is no additional options, we output every single<a name="line.72"></a>
<FONT color="green">073</FONT>            // Key/Value pair for the Map in a similar format to Hashtable.toString()<a name="line.73"></a>
<FONT color="green">074</FONT>            if (key == null) {<a name="line.74"></a>
<FONT color="green">075</FONT>                if (map.size() == 0) {<a name="line.75"></a>
<FONT color="green">076</FONT>                    toAppendTo.append("{}");<a name="line.76"></a>
<FONT color="green">077</FONT>                    return;<a name="line.77"></a>
<FONT color="green">078</FONT>                }<a name="line.78"></a>
<FONT color="green">079</FONT>                StringBuilder sb = new StringBuilder("{");<a name="line.79"></a>
<FONT color="green">080</FONT>                Set&lt;String&gt; keys = new TreeSet&lt;String&gt;(map.keySet());<a name="line.80"></a>
<FONT color="green">081</FONT>                for (String key : keys) {<a name="line.81"></a>
<FONT color="green">082</FONT>                    if (sb.length() &gt; 1) {<a name="line.82"></a>
<FONT color="green">083</FONT>                        sb.append(", ");<a name="line.83"></a>
<FONT color="green">084</FONT>                    }<a name="line.84"></a>
<FONT color="green">085</FONT>                    sb.append(key).append("=").append(map.get(key));<a name="line.85"></a>
<FONT color="green">086</FONT>    <a name="line.86"></a>
<FONT color="green">087</FONT>                }<a name="line.87"></a>
<FONT color="green">088</FONT>                sb.append("}");<a name="line.88"></a>
<FONT color="green">089</FONT>                toAppendTo.append(sb);<a name="line.89"></a>
<FONT color="green">090</FONT>            } else {<a name="line.90"></a>
<FONT color="green">091</FONT>                // otherwise they just want a single key output<a name="line.91"></a>
<FONT color="green">092</FONT>                String val = map.get(key);<a name="line.92"></a>
<FONT color="green">093</FONT>    <a name="line.93"></a>
<FONT color="green">094</FONT>                if (val != null) {<a name="line.94"></a>
<FONT color="green">095</FONT>                    toAppendTo.append(val);<a name="line.95"></a>
<FONT color="green">096</FONT>                }<a name="line.96"></a>
<FONT color="green">097</FONT>            }<a name="line.97"></a>
<FONT color="green">098</FONT>        }<a name="line.98"></a>
<FONT color="green">099</FONT>    }<a name="line.99"></a>


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