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<a href="Filter_8hh.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span>
<a name="l00002"></a>00002 <span class="comment">// Filter.hh</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) : 2000 - 2002</span>
<a name="l00005"></a>00005 <span class="comment">// LifeLine Networks BV (www.lifeline.nl). All rights reserved.</span>
<a name="l00006"></a>00006 <span class="comment">// Bastiaan Bakker. All rights reserved. </span>
<a name="l00007"></a>00007 <span class="comment">// </span>
<a name="l00008"></a>00008 <span class="comment">// 2004,2005,2006,2007,2008,2009,2010</span>
<a name="l00009"></a>00009 <span class="comment">// Synchrotron SOLEIL</span>
<a name="l00010"></a>00010 <span class="comment">// L'Orme des Merisiers</span>
<a name="l00011"></a>00011 <span class="comment">// Saint-Aubin - BP 48 - France</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// This file is part of log4tango.</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015 <span class="comment">// Log4ango is free software: you can redistribute it and/or modify</span>
<a name="l00016"></a>00016 <span class="comment">// it under the terms of the GNU Lesser General Public License as published by</span>
<a name="l00017"></a>00017 <span class="comment">// the Free Software Foundation, either version 3 of the License, or</span>
<a name="l00018"></a>00018 <span class="comment">// (at your option) any later version.</span>
<a name="l00019"></a>00019 <span class="comment">// </span>
<a name="l00020"></a>00020 <span class="comment">// Log4tango is distributed in the hope that it will be useful,</span>
<a name="l00021"></a>00021 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00022"></a>00022 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00023"></a>00023 <span class="comment">// GNU Lesser General Public License for more details.</span>
<a name="l00024"></a>00024 <span class="comment">// </span>
<a name="l00025"></a>00025 <span class="comment">// You should have received a copy of the GNU Lesser General Public License</span>
<a name="l00026"></a>00026 <span class="comment">// along with Log4Tango. If not, see <http://www.gnu.org/licenses/>.</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#ifndef _LOG4TANGO_FILTER_HH</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#define _LOG4TANGO_FILTER_HH</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span>
<a name="l00031"></a>00031 <span class="preprocessor">#ifdef APPENDERS_HAVE_FILTERS</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <<a class="code" href="Portability_8hh.html">log4tango/Portability.hh</a>></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <<a class="code" href="LoggingEvent_8hh.html">log4tango/LoggingEvent.hh</a>></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keyword">namespace </span>log4tango {
<a name="l00037"></a>00037
<a name="l00069"></a>00069 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00070"></a>00070 <span class="comment">// class : Filter</span>
<a name="l00071"></a>00071 <span class="comment">//----------------------------------------------------------------------------- </span>
<a name="l00072"></a>00072 <span class="keyword">class </span><a class="code" href="Export_8hh.html#abb9e874b4244b6247ac9dbb62a2c7b8f">LOG4TANGO_EXPORT</a> Filter
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keyword">public</span>:
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="keyword">typedef</span> <span class="keyword">enum</span> {
<a name="l00078"></a>00078 DENY = -1,
<a name="l00079"></a>00079 NEUTRAL = 0,
<a name="l00080"></a>00080 ACCEPT = 1
<a name="l00081"></a>00081 } Decision;
<a name="l00082"></a>00082
<a name="l00086"></a>00086 Filter ();
<a name="l00087"></a>00087
<a name="l00091"></a>00091 <span class="keyword">virtual</span> ~Filter ();
<a name="l00092"></a>00092
<a name="l00097"></a>00097 <span class="keywordtype">void</span> set_chained_filter (Filter* filter);
<a name="l00098"></a>00098
<a name="l00104"></a>00104 <span class="keyword">inline</span> Filter* Filter::get_chained_filter (<span class="keywordtype">void</span>) {
<a name="l00105"></a>00105 <span class="keywordflow">return</span> _chain;
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107
<a name="l00112"></a>00112 <span class="keyword">virtual</span> Filter* get_end_of_chain (<span class="keywordtype">void</span>);
<a name="l00113"></a>00113
<a name="l00119"></a>00119 <span class="keyword">virtual</span> <span class="keywordtype">void</span> append_chained_filter (Filter* filter);
<a name="l00120"></a>00120
<a name="l00128"></a>00128 <span class="keyword">virtual</span> Decision decide (<span class="keyword">const</span> LoggingEvent& event);
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keyword">protected</span>:
<a name="l00138"></a>00138 <span class="keyword">virtual</span> Decision _decide (<span class="keyword">const</span> LoggingEvent& event) = 0;
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keyword">private</span>:
<a name="l00141"></a>00141 Filter* _chain;
<a name="l00142"></a>00142 };
<a name="l00143"></a>00143
<a name="l00144"></a>00144 } <span class="comment">// namespace log4tango</span>
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="preprocessor">#endif // APPENDERS_HAVE_FILTERS</span>
<a name="l00147"></a>00147 <span class="preprocessor"></span>
<a name="l00148"></a>00148 <span class="preprocessor">#endif // _LOG4TANGO_FILTER_HH</span>
<a name="l00149"></a>00149 <span class="preprocessor"></span>
<a name="l00150"></a>00150
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