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9<div id="overview"><a href="../../../../../apidocs/org/apache/log4j/pattern/BridgePatternConverter.html">View Javadoc</a></div><pre>
10
11<a name="1" href="#1">1</a> <em class="jxr_comment">/*</em>
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<a name="3" href="#3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em>
14<a name="4" href="#4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
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<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<a name="7" href="#7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em>
18<a name="8" href="#8">8</a> <em class="jxr_comment"> *</em>
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<a name="10" href="#10">10</a> <em class="jxr_comment"> *</em>
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<a name="12" href="#12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
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<a name="14" href="#14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
25<a name="15" href="#15">15</a> <em class="jxr_comment"> * limitations under the License.</em>
26<a name="16" href="#16">16</a> <em class="jxr_comment"> */</em>
27<a name="17" href="#17">17</a>
28<a name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.log4j.pattern;
29<a name="19" href="#19">19</a>
30<a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.spi.LoggingEvent;
31<a name="21" href="#21">21</a>
32<a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;
33<a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.util.Iterator;
34<a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.util.List;
35<a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.Map;
36<a name="26" href="#26">26</a>
37<a name="27" href="#27">27</a>
38<a name="28" href="#28">28</a> <em class="jxr_javadoccomment">/**</em>
39<a name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * The class implements the pre log4j 1.3 org.apache.log4j.helpers.PatternConverter</em>
40<a name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * contract by delegating to the log4j 1.3 pattern implementation.</em>
41<a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> *</em>
42<a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> *</em>
43<a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * @author Curt Arnold</em>
44<a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> *</em>
45<a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> */</em>
46<a name="36" href="#36">36</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/log4j/pattern/BridgePatternConverter.html">BridgePatternConverter</a>
47<a name="37" href="#37">37</a> <strong class="jxr_keyword">extends</strong> org.apache.log4j.helpers.PatternConverter {
48<a name="38" href="#38">38</a> <em class="jxr_javadoccomment">/**</em>
49<a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * Pattern converters.</em>
50<a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> */</em>
51<a name="41" href="#41">41</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/log4j/pattern/LoggingEventPatternConverter.html">LoggingEventPatternConverter</a>[] patternConverters;
52<a name="42" href="#42">42</a>
53<a name="43" href="#43">43</a> <em class="jxr_javadoccomment">/**</em>
54<a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * Field widths and alignment corresponding to pattern converters.</em>
55<a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> */</em>
56<a name="46" href="#46">46</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/log4j/pattern/FormattingInfo.html">FormattingInfo</a>[] patternFields;
57<a name="47" href="#47">47</a>
58<a name="48" href="#48">48</a> <em class="jxr_javadoccomment">/**</em>
59<a name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * Does pattern process exceptions.</em>
60<a name="50" href="#50">50</a> <em class="jxr_javadoccomment"> */</em>
61<a name="51" href="#51">51</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> handlesExceptions;
62<a name="52" href="#52">52</a>
63<a name="53" href="#53">53</a> <em class="jxr_javadoccomment">/**</em>
64<a name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * Create a new instance.</em>
65<a name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * @param pattern pattern, may not be null.</em>
66<a name="56" href="#56">56</a> <em class="jxr_javadoccomment"> */</em>
67<a name="57" href="#57">57</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/log4j/pattern/BridgePatternConverter.html">BridgePatternConverter</a>(
68<a name="58" href="#58">58</a> <strong class="jxr_keyword">final</strong> String pattern) {
69<a name="59" href="#59">59</a> next = <strong class="jxr_keyword">null</strong>;
70<a name="60" href="#60">60</a> handlesExceptions = false;
71<a name="61" href="#61">61</a>
72<a name="62" href="#62">62</a> List converters = <strong class="jxr_keyword">new</strong> ArrayList();
73<a name="63" href="#63">63</a> List fields = <strong class="jxr_keyword">new</strong> ArrayList();
74<a name="64" href="#64">64</a> Map converterRegistry = <strong class="jxr_keyword">null</strong>;
75<a name="65" href="#65">65</a>
76<a name="66" href="#66">66</a> PatternParser.parse(
77<a name="67" href="#67">67</a> pattern, converters, fields, converterRegistry,
78<a name="68" href="#68">68</a> PatternParser.getPatternLayoutRules());
79<a name="69" href="#69">69</a>
80<a name="70" href="#70">70</a> patternConverters = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/log4j/pattern/LoggingEventPatternConverter.html">LoggingEventPatternConverter</a>[converters.size()];
81<a name="71" href="#71">71</a> patternFields = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/log4j/pattern/FormattingInfo.html">FormattingInfo</a>[converters.size()];
82<a name="72" href="#72">72</a>
83<a name="73" href="#73">73</a> <strong class="jxr_keyword">int</strong> i = 0;
84<a name="74" href="#74">74</a> Iterator converterIter = converters.iterator();
85<a name="75" href="#75">75</a> Iterator fieldIter = fields.iterator();
86<a name="76" href="#76">76</a>
87<a name="77" href="#77">77</a> <strong class="jxr_keyword">while</strong> (converterIter.hasNext()) {
88<a name="78" href="#78">78</a> Object converter = converterIter.next();
89<a name="79" href="#79">79</a>
90<a name="80" href="#80">80</a> <strong class="jxr_keyword">if</strong> (converter instanceof LoggingEventPatternConverter) {
91<a name="81" href="#81">81</a> patternConverters[i] = (LoggingEventPatternConverter) converter;
92<a name="82" href="#82">82</a> handlesExceptions |= patternConverters[i].handlesThrowable();
93<a name="83" href="#83">83</a> } <strong class="jxr_keyword">else</strong> {
94<a name="84" href="#84">84</a> patternConverters[i] =
95<a name="85" href="#85">85</a> <strong class="jxr_keyword">new</strong> org.apache.log4j.pattern.LiteralPatternConverter(<span class="jxr_string">""</span>);
96<a name="86" href="#86">86</a> }
97<a name="87" href="#87">87</a>
98<a name="88" href="#88">88</a> <strong class="jxr_keyword">if</strong> (fieldIter.hasNext()) {
99<a name="89" href="#89">89</a> patternFields[i] = (FormattingInfo) fieldIter.next();
100<a name="90" href="#90">90</a> } <strong class="jxr_keyword">else</strong> {
101<a name="91" href="#91">91</a> patternFields[i] = FormattingInfo.getDefault();
102<a name="92" href="#92">92</a> }
103<a name="93" href="#93">93</a>
104<a name="94" href="#94">94</a> i++;
105<a name="95" href="#95">95</a> }
106<a name="96" href="#96">96</a> }
107<a name="97" href="#97">97</a>
108<a name="98" href="#98">98</a> <em class="jxr_javadoccomment">/**</em>
109<a name="99" href="#99">99</a> <em class="jxr_javadoccomment"> * {@inheritDoc}</em>
110<a name="100" href="#100">100</a> <em class="jxr_javadoccomment"> */</em>
111<a name="101" href="#101">101</a> <strong class="jxr_keyword">protected</strong> String convert(<strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> event) {
112<a name="102" href="#102">102</a> <em class="jxr_comment">//</em>
113<a name="103" href="#103">103</a> <em class="jxr_comment">// code should be unreachable.</em>
114<a name="104" href="#104">104</a> <em class="jxr_comment">//</em>
115<a name="105" href="#105">105</a> StringBuffer sbuf = <strong class="jxr_keyword">new</strong> StringBuffer();
116<a name="106" href="#106">106</a> format(sbuf, event);
117<a name="107" href="#107">107</a>
118<a name="108" href="#108">108</a> <strong class="jxr_keyword">return</strong> sbuf.toString();
119<a name="109" href="#109">109</a> }
120<a name="110" href="#110">110</a>
121<a name="111" href="#111">111</a> <em class="jxr_javadoccomment">/**</em>
122<a name="112" href="#112">112</a> <em class="jxr_javadoccomment"> Format event to string buffer.</em>
123<a name="113" href="#113">113</a> <em class="jxr_javadoccomment"> @param sbuf string buffer to receive formatted event, may not be null.</em>
124<a name="114" href="#114">114</a> <em class="jxr_javadoccomment"> @param e event to format, may not be null.</em>
125<a name="115" href="#115">115</a> <em class="jxr_javadoccomment"> */</em>
126<a name="116" href="#116">116</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> format(<strong class="jxr_keyword">final</strong> StringBuffer sbuf, <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> e) {
127<a name="117" href="#117">117</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < patternConverters.length; i++) {
128<a name="118" href="#118">118</a> <strong class="jxr_keyword">int</strong> startField = sbuf.length();
129<a name="119" href="#119">119</a> patternConverters[i].format(e, sbuf);
130<a name="120" href="#120">120</a> patternFields[i].format(startField, sbuf);
131<a name="121" href="#121">121</a> }
132<a name="122" href="#122">122</a> }
133<a name="123" href="#123">123</a>
134<a name="124" href="#124">124</a> <em class="jxr_javadoccomment">/**</em>
135<a name="125" href="#125">125</a> <em class="jxr_javadoccomment"> * Will return false if any of the conversion specifiers in the pattern</em>
136<a name="126" href="#126">126</a> <em class="jxr_javadoccomment"> * handles {@link Exception Exceptions}.</em>
137<a name="127" href="#127">127</a> <em class="jxr_javadoccomment"> * @return true if the pattern formats any information from exceptions.</em>
138<a name="128" href="#128">128</a> <em class="jxr_javadoccomment"> */</em>
139<a name="129" href="#129">129</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> ignoresThrowable() {
140<a name="130" href="#130">130</a> <strong class="jxr_keyword">return</strong> !handlesExceptions;
141<a name="131" href="#131">131</a> }
142<a name="132" href="#132">132</a> }
143</pre>
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