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<li class="navelem"><a class="el" href="namespacelog4shib.html">log4shib</a></li><li class="navelem"><a class="el" href="classlog4shib_1_1Filter.html">Filter</a></li> </ul>
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<a href="#pub-types">Public Types</a> |
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<div class="title">log4shib::Filter Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Users should extend this class to implement customized logging event filtering.
<a href="classlog4shib_1_1Filter.html#details">More...</a></p>
<p><code>#include <<a class="el" href="Filter_8hh_source.html">Filter.hh</a>></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a9f3bfcd513fc7d5b7a1eb20b7ef5a779"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779">Decision</a> { <a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779a73a1a4f133469a1dab2b878c8713593c">DENY</a> = -1,
<a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779a58bf61974a463765c41b075aa9ca60b7">NEUTRAL</a> = 0,
<a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779a57b40731af8b035e996b300f6b179f73">ACCEPT</a> = 1
}</td></tr>
<tr class="separator:a9f3bfcd513fc7d5b7a1eb20b7ef5a779"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a2746a927b192461acf77f7aa19093564"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#a2746a927b192461acf77f7aa19093564">Filter</a> ()</td></tr>
<tr class="memdesc:a2746a927b192461acf77f7aa19093564"><td class="mdescLeft"> </td><td class="mdescRight">Default Constructor for <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a>. <a href="#a2746a927b192461acf77f7aa19093564">More...</a><br /></td></tr>
<tr class="separator:a2746a927b192461acf77f7aa19093564"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a56326894ceac2d47f0c6024e879654ad"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#a56326894ceac2d47f0c6024e879654ad">~Filter</a> ()</td></tr>
<tr class="memdesc:a56326894ceac2d47f0c6024e879654ad"><td class="mdescLeft"> </td><td class="mdescRight">Destructor for <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a>. <a href="#a56326894ceac2d47f0c6024e879654ad">More...</a><br /></td></tr>
<tr class="separator:a56326894ceac2d47f0c6024e879654ad"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a72764c607a6b52b90fcc4a874ab3cc67"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#a72764c607a6b52b90fcc4a874ab3cc67">setChainedFilter</a> (<a class="el" href="classlog4shib_1_1Filter.html">Filter</a> *filter)</td></tr>
<tr class="memdesc:a72764c607a6b52b90fcc4a874ab3cc67"><td class="mdescLeft"> </td><td class="mdescRight">Set the next <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> in the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. <a href="#a72764c607a6b52b90fcc4a874ab3cc67">More...</a><br /></td></tr>
<tr class="separator:a72764c607a6b52b90fcc4a874ab3cc67"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a03226fed9b91ccffb8d3cd981e15003f"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classlog4shib_1_1Filter.html">Filter</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#a03226fed9b91ccffb8d3cd981e15003f">getChainedFilter</a> ()</td></tr>
<tr class="memdesc:a03226fed9b91ccffb8d3cd981e15003f"><td class="mdescLeft"> </td><td class="mdescRight">Get the next <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> in the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. <a href="#a03226fed9b91ccffb8d3cd981e15003f">More...</a><br /></td></tr>
<tr class="separator:a03226fed9b91ccffb8d3cd981e15003f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af493f47a3dd26c62970461ecd3149a1d"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classlog4shib_1_1Filter.html">Filter</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#af493f47a3dd26c62970461ecd3149a1d">getEndOfChain</a> ()</td></tr>
<tr class="memdesc:af493f47a3dd26c62970461ecd3149a1d"><td class="mdescLeft"> </td><td class="mdescRight">Get the last <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> in the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. <a href="#af493f47a3dd26c62970461ecd3149a1d">More...</a><br /></td></tr>
<tr class="separator:af493f47a3dd26c62970461ecd3149a1d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af805dfa45758afdbf078a18eaf048853"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#af805dfa45758afdbf078a18eaf048853">appendChainedFilter</a> (<a class="el" href="classlog4shib_1_1Filter.html">Filter</a> *filter)</td></tr>
<tr class="memdesc:af805dfa45758afdbf078a18eaf048853"><td class="mdescLeft"> </td><td class="mdescRight">Add a <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> to the end of the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. <a href="#af805dfa45758afdbf078a18eaf048853">More...</a><br /></td></tr>
<tr class="separator:af805dfa45758afdbf078a18eaf048853"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad9ce715fdb100b6a5cda4cf9d8b7d756"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779">Decision</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#ad9ce715fdb100b6a5cda4cf9d8b7d756">decide</a> (const <a class="el" href="structlog4shib_1_1LoggingEvent.html">LoggingEvent</a> &event)</td></tr>
<tr class="memdesc:ad9ce715fdb100b6a5cda4cf9d8b7d756"><td class="mdescLeft"> </td><td class="mdescRight">Decide whether to accept or deny a <a class="el" href="structlog4shib_1_1LoggingEvent.html" title="The internal representation of logging events. ">LoggingEvent</a>. <a href="#ad9ce715fdb100b6a5cda4cf9d8b7d756">More...</a><br /></td></tr>
<tr class="separator:ad9ce715fdb100b6a5cda4cf9d8b7d756"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:aa64ee1bf0c86fa56be581d203a6f4f56"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779">Decision</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4shib_1_1Filter.html#aa64ee1bf0c86fa56be581d203a6f4f56">_decide</a> (const <a class="el" href="structlog4shib_1_1LoggingEvent.html">LoggingEvent</a> &event)=0</td></tr>
<tr class="memdesc:aa64ee1bf0c86fa56be581d203a6f4f56"><td class="mdescLeft"> </td><td class="mdescRight">Decide whether <b>this</b> <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> accepts or denies the given <a class="el" href="structlog4shib_1_1LoggingEvent.html" title="The internal representation of logging events. ">LoggingEvent</a>. <a href="#aa64ee1bf0c86fa56be581d203a6f4f56">More...</a><br /></td></tr>
<tr class="separator:aa64ee1bf0c86fa56be581d203a6f4f56"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Users should extend this class to implement customized logging event filtering. </p>
<p>Note that <a class="el" href="classlog4shib_1_1Category.html" title="This is the central class in the log4j package. ">log4shib::Category</a> and lof4cpp::Appender have built-in filtering rules. It is suggested that you first use and understand the built-in rules before rushing to write your own custom filters.</p>
<p>This abstract class assumes and also imposes that filters be organized in a linear chain. The <code>decide(LoggingEvent)</code> method of each filter is called sequentially, in the order of their addition to the chain.</p>
<p>The <code>decide(LoggingEvent)</code> method must return a Decision value, either DENY, NEUTRAL or ACCCEPT.</p>
<p>If the value DENY is returned, then the log event is dropped immediately without consulting with the remaining filters.</p>
<p>If the value NEUTRAL is returned, then the next filter in the chain is consulted. If there are no more filters in the chain, then the log event is logged. Thus, in the presence of no filters, the default behaviour is to log all logging events.</p>
<p>If the value ACCEPT is returned, then the log event is logged without consulting the remaining filters.</p>
<p>The philosophy of <a class="el" href="namespacelog4shib.html" title="The top level namespace for all 'Log for C++' types and classes. ">log4shib</a> filters is largely inspired from the Linux ipchains. </p>
</div><h2 class="groupheader">Member Enumeration Documentation</h2>
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<td class="memname">enum <a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779">log4shib::Filter::Decision</a></td>
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<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="a9f3bfcd513fc7d5b7a1eb20b7ef5a779a73a1a4f133469a1dab2b878c8713593c"></a>DENY </td><td class="fielddoc">
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<tr><td class="fieldname"><a class="anchor" id="a9f3bfcd513fc7d5b7a1eb20b7ef5a779a58bf61974a463765c41b075aa9ca60b7"></a>NEUTRAL </td><td class="fielddoc">
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<tr><td class="fieldname"><a class="anchor" id="a9f3bfcd513fc7d5b7a1eb20b7ef5a779a57b40731af8b035e996b300f6b179f73"></a>ACCEPT </td><td class="fielddoc">
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<h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="memname">log4shib::Filter::Filter </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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<p>Default Constructor for <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a>. </p>
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<td class="memname">log4shib::Filter::~Filter </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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<p>Destructor for <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a>. </p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">virtual <a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779">Decision</a> log4shib::Filter::_decide </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="structlog4shib_1_1LoggingEvent.html">LoggingEvent</a> & </td>
<td class="paramname"><em>event</em></td><td>)</td>
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<p>Decide whether <b>this</b> <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> accepts or denies the given <a class="el" href="structlog4shib_1_1LoggingEvent.html" title="The internal representation of logging events. ">LoggingEvent</a>. </p>
<p>Actual implementation of <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> should override this method and not <code>decide(LoggingEvent&)</code>. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">event</td><td>The <a class="el" href="structlog4shib_1_1LoggingEvent.html" title="The internal representation of logging events. ">LoggingEvent</a> to decide on. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The Decision </dd></dl>
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<td class="memname">void log4shib::Filter::appendChainedFilter </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classlog4shib_1_1Filter.html">Filter</a> * </td>
<td class="paramname"><em>filter</em></td><td>)</td>
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<p>Add a <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> to the end of the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. </p>
<p>Convience method for <a class="el" href="classlog4shib_1_1Filter.html#af493f47a3dd26c62970461ecd3149a1d" title="Get the last Filter in the Filter chain. ">getEndOfChain()</a>->setChainedFilter(filter). </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">filter</td><td>The filter to add to the end of the chain. </td></tr>
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</dd>
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<td class="memname"><a class="el" href="classlog4shib_1_1Filter.html#a9f3bfcd513fc7d5b7a1eb20b7ef5a779">Filter::Decision</a> log4shib::Filter::decide </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="structlog4shib_1_1LoggingEvent.html">LoggingEvent</a> & </td>
<td class="paramname"><em>event</em></td><td>)</td>
<td></td>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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<p>Decide whether to accept or deny a <a class="el" href="structlog4shib_1_1LoggingEvent.html" title="The internal representation of logging events. ">LoggingEvent</a>. </p>
<p>This method will walk the entire chain until a non neutral decision has been made or the end of the chain has been reached. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">event</td><td>The <a class="el" href="structlog4shib_1_1LoggingEvent.html" title="The internal representation of logging events. ">LoggingEvent</a> to decide on. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The Decision </dd></dl>
</div>
</div>
<a class="anchor" id="a03226fed9b91ccffb8d3cd981e15003f"></a>
<div class="memitem">
<div class="memproto">
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<td class="mlabels-left">
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<td class="memname"><a class="el" href="classlog4shib_1_1Filter.html">Filter</a> * log4shib::Filter::getChainedFilter </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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<p>Get the next <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> in the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. </p>
<dl class="section return"><dt>Returns</dt><dd>The next <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> or NULL if the current filter is the last in the chain </dd></dl>
</div>
</div>
<a class="anchor" id="af493f47a3dd26c62970461ecd3149a1d"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
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<td class="memname"><a class="el" href="classlog4shib_1_1Filter.html">Filter</a> * log4shib::Filter::getEndOfChain </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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<p>Get the last <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> in the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. </p>
<dl class="section return"><dt>Returns</dt><dd>The last <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> in the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain </dd></dl>
</div>
</div>
<a class="anchor" id="a72764c607a6b52b90fcc4a874ab3cc67"></a>
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<td class="memname">void log4shib::Filter::setChainedFilter </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classlog4shib_1_1Filter.html">Filter</a> * </td>
<td class="paramname"><em>filter</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Set the next <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> in the <a class="el" href="classlog4shib_1_1Filter.html" title="Users should extend this class to implement customized logging event filtering. ">Filter</a> chain. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">filter</td><td>The filter to chain </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="Filter_8hh_source.html">Filter.hh</a></li>
<li><a class="el" href="Filter_8cpp.html">Filter.cpp</a></li>
</ul>
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