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<title>Class Poco::NullChannel</title>
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<meta name="copyright" content="Copyright (c) 2009, Applied Informatics Software Engineering GmbH and Contributors"/>
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<meta name="date" content="2009-11-24"/>
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<h1 class="namespace"><a href="Poco.html" class="namespace">Poco</a></h1>
<h1 class="symbol">class NullChannel</h1>
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<p>
<b>Library:</b> Foundation<br />
<b>Package:</b> Logging<br />
<b>Header:</b> Poco/NullChannel.h</p>
<h2>Description</h2>
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<p>The <a href="Poco.NullChannel.html" title="class Poco::NullChannel">NullChannel</a> is the /dev/null of Channels. </p>
<p>A <a href="Poco.NullChannel.html" title="class Poco::NullChannel">NullChannel</a> discards all information sent to it. Furthermore, its <a href="Poco.NullChannel.html#8851" title="Poco::NullChannel::setProperty()">setProperty</a>() method ignores all properties, so it the <a href="Poco.NullChannel.html" title="class Poco::NullChannel">NullChannel</a> has the nice feature that it can stand in for any other channel class in a logging configuration. </p>
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<h2>Inheritance</h2>
<p><b>Direct Base Classes: </b><a href="Poco.Channel.html" title="class Poco::Channel">Channel</a></p>
<p><b>All Base Classes: </b><a href="Poco.Channel.html" title="class Poco::Channel">Channel</a>, <a href="Poco.Configurable.html" title="class Poco::Configurable">Configurable</a>, <a href="Poco.RefCountedObject.html" title="class Poco::RefCountedObject">RefCountedObject</a></p>
<h2>Member Summary</h2>
<p><b>Member Functions: </b><a href="Poco.NullChannel.html#8849" title="Poco::NullChannel::log()">log</a>, <a href="Poco.NullChannel.html#8851" title="Poco::NullChannel::setProperty()">setProperty</a></p>
<p><b>Inherited Functions: </b><a href="Poco.Channel.html#4145" title="Poco::Channel::close()">close</a>, <a href="Poco.RefCountedObject.html#9659" title="Poco::RefCountedObject::duplicate()">duplicate</a>, <a href="Poco.Channel.html#4151" title="Poco::Channel::getProperty()">getProperty</a>, <a href="Poco.Channel.html#4146" title="Poco::Channel::log()">log</a>, <a href="Poco.Channel.html#4144" title="Poco::Channel::open()">open</a>, <a href="Poco.RefCountedObject.html#9661" title="Poco::RefCountedObject::referenceCount()">referenceCount</a>, <a href="Poco.RefCountedObject.html#9660" title="Poco::RefCountedObject::release()">release</a>, <a href="Poco.Channel.html#4148" title="Poco::Channel::setProperty()">setProperty</a></p>
<h2>Constructors</h2>
<h3><a name="8847">NullChannel</a></h3>
<p class="decl"><a href="Poco.NullChannel.html" title="class Poco::NullChannel">NullChannel</a>();</p>
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<p>Creates the <a href="Poco.NullChannel.html" title="class Poco::NullChannel">NullChannel</a>. </p>
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<h2>Destructor</h2>
<h3><a name="8848">~NullChannel</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">~<a href="Poco.NullChannel.html" title="class Poco::NullChannel">NullChannel</a>();</p>
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<p>Destroys the <a href="Poco.NullChannel.html" title="class Poco::NullChannel">NullChannel</a>. </p>
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<h2>Member Functions</h2>
<h3><a name="8849">log</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">void log(<br /> const <a href="Poco.Message.html" title="class Poco::Message">Message</a> & msg<br />);</p>
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<p>Does nothing. </p>
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<div class="description"><p><b>See also:</b> <a href="Poco.Channel.html#4146" title="Poco::Channel::log()">Poco::Channel::log()</a></p></div>
<h3><a name="8851">setProperty</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">void setProperty(<br /> const std::string & name,<br /> const std::string & value<br />);</p>
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<p>Ignores both name and value. </p>
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<div class="description"><p><b>See also:</b> <a href="Poco.Channel.html#4148" title="Poco::Channel::setProperty()">Poco::Channel::setProperty()</a></p></div>
<p class="footer">POCO C++ Libraries 1.3.6-all<br />
Copyright © 2009, <a href="http://pocoproject.org/" target="_blank">Applied Informatics Software Engineering GmbH and Contributors</a></p>
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