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| <a name="1" href="#1">1</a> <em class="jxr_comment">/*</em> |
| <a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em> |
| <a name="3" href="#3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em> |
| <a name="4" href="#4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em> |
| <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> |
| <a name="6" href="#6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em> |
| <a name="7" href="#7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em> |
| <a name="8" href="#8">8</a> <em class="jxr_comment"> * </em> |
| <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> |
| <a name="10" href="#10">10</a> <em class="jxr_comment"> * </em> |
| <a name="11" href="#11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em> |
| <a name="12" href="#12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> |
| <a name="13" href="#13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> |
| <a name="14" href="#14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em> |
| <a name="15" href="#15">15</a> <em class="jxr_comment"> * limitations under the License.</em> |
| <a name="16" href="#16">16</a> <em class="jxr_comment"> */</em> |
| <a name="17" href="#17">17</a> |
| <a name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.log4j; |
| <a name="19" href="#19">19</a> |
| <a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.helpers.FormattingInfo; |
| <a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.helpers.PatternConverter; |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.helpers.PatternParser; |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.spi.LoggingEvent; |
| <a name="24" href="#24">24</a> |
| <a name="25" href="#25">25</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="26" href="#26">26</a> <em class="jxr_javadoccomment"> Example showing how to extend PatternParser to recognize additional</em> |
| <a name="27" href="#27">27</a> <em class="jxr_javadoccomment"> conversion characters. The examples shows that minimum and maximum</em> |
| <a name="28" href="#28">28</a> <em class="jxr_javadoccomment"> width and alignment settings apply for "extension" conversion</em> |
| <a name="29" href="#29">29</a> <em class="jxr_javadoccomment"> characters just as they do for PatternLayout recognized characters.</em> |
| <a name="30" href="#30">30</a> <em class="jxr_javadoccomment"> </em> |
| <a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> <p>In this case MyPatternParser recognizes %# and outputs the value</em> |
| <a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> of an internal counter which is also incremented at each call.</em> |
| <a name="33" href="#33">33</a> |
| <a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> See <a href=doc-files/MyPatternParser.java><b>source</b></a> code</em> |
| <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> for more details.</em> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> </em> |
| <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> @see org.apache.log4j.examples.MyPatternLayout</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> @see org.apache.log4j.helpers.PatternParser</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> @see org.apache.log4j.PatternLayout</em> |
| <a name="40" href="#40">40</a> |
| <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> @author Anders Kristensen </em> |
| <a name="42" href="#42">42</a> <em class="jxr_javadoccomment">*/</em> |
| <a name="43" href="#43">43</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/apache/log4j/MyPatternParser.html">MyPatternParser</a> <strong class="jxr_keyword">extends</strong> PatternParser { |
| <a name="44" href="#44">44</a> |
| <a name="45" href="#45">45</a> <strong class="jxr_keyword">int</strong> counter = 0; |
| <a name="46" href="#46">46</a> |
| <a name="47" href="#47">47</a> <strong class="jxr_keyword">public</strong> |
| <a name="48" href="#48">48</a> <a href="../../../org/apache/log4j/MyPatternParser.html">MyPatternParser</a>(String pattern) { |
| <a name="49" href="#49">49</a> <strong class="jxr_keyword">super</strong>(pattern); |
| <a name="50" href="#50">50</a> } |
| <a name="51" href="#51">51</a> |
| <a name="52" href="#52">52</a> <strong class="jxr_keyword">public</strong> |
| <a name="53" href="#53">53</a> <strong class="jxr_keyword">void</strong> finalizeConverter(<strong class="jxr_keyword">char</strong> c) { |
| <a name="54" href="#54">54</a> <strong class="jxr_keyword">if</strong> (c == '#') { |
| <a name="55" href="#55">55</a> addConverter(<strong class="jxr_keyword">new</strong> <a href="../../../org/apache/log4j/MyPatternParser.html">UserDirPatternConverter</a>(formattingInfo)); |
| <a name="56" href="#56">56</a> currentLiteral.setLength(0); |
| <a name="57" href="#57">57</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="58" href="#58">58</a> <strong class="jxr_keyword">super</strong>.finalizeConverter(c); |
| <a name="59" href="#59">59</a> } |
| <a name="60" href="#60">60</a> } |
| <a name="61" href="#61">61</a> |
| <a name="62" href="#62">62</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/apache/log4j/MyPatternParser.html">UserDirPatternConverter</a> <strong class="jxr_keyword">extends</strong> PatternConverter { |
| <a name="63" href="#63">63</a> <a href="../../../org/apache/log4j/MyPatternParser.html">UserDirPatternConverter</a>(FormattingInfo formattingInfo) { |
| <a name="64" href="#64">64</a> <strong class="jxr_keyword">super</strong>(formattingInfo); |
| <a name="65" href="#65">65</a> } |
| <a name="66" href="#66">66</a> |
| <a name="67" href="#67">67</a> <strong class="jxr_keyword">public</strong> |
| <a name="68" href="#68">68</a> String convert(LoggingEvent event) { |
| <a name="69" href="#69">69</a> <strong class="jxr_keyword">return</strong> String.valueOf(++counter); |
| <a name="70" href="#70">70</a> } |
| <a name="71" href="#71">71</a> } |
| <a name="72" href="#72">72</a> } |
| </pre> |
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