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/apache-log4j-1.2.17/site/xref/org/apache/log4j/rewrite/MapRewritePolicy.html

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Possible License(s): Apache-2.0 
    

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  4. <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
    5. 

  5. <title>MapRewritePolicy xref</title>
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  6. <link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" />
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  8. <body>
    9. 

  9. <div id="overview"><a href="../../../../../apidocs/org/apache/log4j/rewrite/MapRewritePolicy.html">View Javadoc</a></div><pre>
    10. 

  10. 

  11. <a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
    12. 

  12. <a name="2" href="#2">2</a>   <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
    13. 

  13. <a name="3" href="#3">3</a>   <em class="jxr_comment"> * contributor license agreements.  See the NOTICE file distributed with</em>
    14. 

  14. <a name="4" href="#4">4</a>   <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
    15. 

  15. <a name="5" href="#5">5</a>   <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
    16. 

  16. <a name="6" href="#6">6</a>   <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
    17. 

  17. <a name="7" href="#7">7</a>   <em class="jxr_comment"> * the License.  You may obtain a copy of the License at</em>
    18. 

  18. <a name="8" href="#8">8</a>   <em class="jxr_comment"> *</em>
    19. 

  19. <a name="9" href="#9">9</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
    20. 

  20. <a name="10" href="#10">10</a>  <em class="jxr_comment"> *</em>
    21. 

  21. <a name="11" href="#11">11</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
    22. 

  22. <a name="12" href="#12">12</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
    23. 

  23. <a name="13" href="#13">13</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
    24. 

  24. <a name="14" href="#14">14</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
    25. 

  25. <a name="15" href="#15">15</a>  <em class="jxr_comment"> * limitations under the License.</em>
    26. 

  26. <a name="16" href="#16">16</a>  <em class="jxr_comment"> */</em>
    27. 

  27. <a name="17" href="#17">17</a>  <strong class="jxr_keyword">package</strong> org.apache.log4j.rewrite;
    28. 

  28. <a name="18" href="#18">18</a>  
    29. 

  29. <a name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
    30. 

  30. <a name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.util.Iterator;
    31. 

  31. <a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
    32. 

  32. <a name="22" href="#22">22</a>  
    33. 

  33. <a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
    34. 

  34. <a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.apache.log4j.spi.LoggingEvent;
    35. 

  35. <a name="25" href="#25">25</a>  
    36. 

  36. <a name="26" href="#26">26</a>  <em class="jxr_javadoccomment">/**</em>
    37. 

  37. <a name="27" href="#27">27</a>  <em class="jxr_javadoccomment"> * This policy rewrites events where the message of the</em>
    38. 

  38. <a name="28" href="#28">28</a>  <em class="jxr_javadoccomment"> * original event implementes java.util.Map.</em>
    39. 

  39. <a name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> * All other events are passed through unmodified.</em>
    40. 

  40. <a name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> * If the map contains a "message" entry, the value will be</em>
    41. 

  41. <a name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * used as the message for the rewritten event.  The rewritten</em>
    42. 

  42. <a name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * event will have a property set that is the combination of the</em>
    43. 

  43. <a name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * original property set and the other members of the message map.</em>
    44. 

  44. <a name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * If both the original property set and the message map</em>
    45. 

  45. <a name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * contain the same entry, the value from the message map</em>
    46. 

  46. <a name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * will overwrite the original property set.</em>
    47. 

  47. <a name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> *</em>
    48. 

  48. <a name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * The combination of the RewriteAppender and this policy</em>
    49. 

  49. <a name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * performs the same actions as the MapFilter from log4j 1.3. </em>
    50. 

  50. <a name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> */</em>
    51. 

  51. <a name="41" href="#41">41</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/log4j/rewrite/MapRewritePolicy.html">MapRewritePolicy</a> implements <a href="../../../../org/apache/log4j/rewrite/RewritePolicy.html">RewritePolicy</a> {
    52. 

  52. <a name="42" href="#42">42</a>      <em class="jxr_javadoccomment">/**</em>
    53. 

  53. <a name="43" href="#43">43</a>  <em class="jxr_javadoccomment">     * {@inheritDoc}</em>
    54. 

  54. <a name="44" href="#44">44</a>  <em class="jxr_javadoccomment">     */</em>
    55. 

  55. <a name="45" href="#45">45</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> rewrite(<strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> source) {
    56. 

  56. <a name="46" href="#46">46</a>          Object msg = source.getMessage();
    57. 

  57. <a name="47" href="#47">47</a>          <strong class="jxr_keyword">if</strong> (msg instanceof Map) {
    58. 

  58. <a name="48" href="#48">48</a>              Map props = <strong class="jxr_keyword">new</strong> HashMap(source.getProperties());
    59. 

  59. <a name="49" href="#49">49</a>              Map eventProps = (Map) msg;
    60. 

  60. <a name="50" href="#50">50</a>              <em class="jxr_comment">//</em>
    61. 

  61. <a name="51" href="#51">51</a>              <em class="jxr_comment">//   if the map sent in the logging request</em>
    62. 

  62. <a name="52" href="#52">52</a>              <em class="jxr_comment">//      has "message" entry, use that as the message body</em>
    63. 

  63. <a name="53" href="#53">53</a>              <em class="jxr_comment">//      otherwise, use the entire map.</em>
    64. 

  64. <a name="54" href="#54">54</a>              <em class="jxr_comment">//</em>
    65. 

  65. <a name="55" href="#55">55</a>              Object newMsg = eventProps.get(<span class="jxr_string">"message"</span>);
    66. 

  66. <a name="56" href="#56">56</a>              <strong class="jxr_keyword">if</strong> (newMsg == <strong class="jxr_keyword">null</strong>) {
    67. 

  67. <a name="57" href="#57">57</a>                  newMsg = msg;
    68. 

  68. <a name="58" href="#58">58</a>              }
    69. 

  69. <a name="59" href="#59">59</a>  
    70. 

  70. <a name="60" href="#60">60</a>              <strong class="jxr_keyword">for</strong>(Iterator iter = eventProps.entrySet().iterator();
    71. 

  71. <a name="61" href="#61">61</a>                      iter.hasNext();
    72. 

  72. <a name="62" href="#62">62</a>                    ) {
    73. 

  73. <a name="63" href="#63">63</a>                  Map.Entry entry = (Map.Entry) iter.next();
    74. 

  74. <a name="64" href="#64">64</a>                  <strong class="jxr_keyword">if</strong> (!(<span class="jxr_string">"message"</span>.equals(entry.getKey()))) {
    75. 

  75. <a name="65" href="#65">65</a>                      props.put(entry.getKey(), entry.getValue());
    76. 

  76. <a name="66" href="#66">66</a>                  }
    77. 

  77. <a name="67" href="#67">67</a>              }
    78. 

  78. <a name="68" href="#68">68</a>  
    79. 

  79. <a name="69" href="#69">69</a>              <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a>(
    80. 

  80. <a name="70" href="#70">70</a>                      source.getFQNOfLoggerClass(),
    81. 

  81. <a name="71" href="#71">71</a>                      source.getLogger() != <strong class="jxr_keyword">null</strong> ? source.getLogger(): Logger.getLogger(source.getLoggerName()), 
    82. 

  82. <a name="72" href="#72">72</a>                      source.getTimeStamp(),
    83. 

  83. <a name="73" href="#73">73</a>                      source.getLevel(),
    84. 

  84. <a name="74" href="#74">74</a>                      newMsg,
    85. 

  85. <a name="75" href="#75">75</a>                      source.getThreadName(),
    86. 

  86. <a name="76" href="#76">76</a>                      source.getThrowableInformation(),
    87. 

  87. <a name="77" href="#77">77</a>                      source.getNDC(),
    88. 

  88. <a name="78" href="#78">78</a>                      source.getLocationInformation(),
    89. 

  89. <a name="79" href="#79">79</a>                      props);
    90. 

  90. <a name="80" href="#80">80</a>          } <strong class="jxr_keyword">else</strong> {
    91. 

  91. <a name="81" href="#81">81</a>              <strong class="jxr_keyword">return</strong> source;
    92. 

  92. <a name="82" href="#82">82</a>          }
    93. 

  93. <a name="83" href="#83">83</a>  
    94. 

  94. <a name="84" href="#84">84</a>      }
    95. 

  95. <a name="85" href="#85">85</a>  }
    96. 

  96. </pre>
    97. 

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    98. 

  98. </html>
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  99. 

  100.