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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<head>
<title>Class Poco::Data::MySQL::Extractor</title>
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<meta name="author" content="Applied Informatics Software Engineering GmbH and Contributors"/>
<meta name="publisher" content="Applied Informatics Software Engineering GmbH and Contributors"/>
<meta name="copyright" content="Copyright (c) 2009, Applied Informatics Software Engineering GmbH and Contributors"/>
<meta name="language" content="en"/>
<meta name="date" content="2009-11-24"/>
<meta name="generator" content="PocoDoc"/>
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<div class="header">
<h1 class="namespace"><a href="Poco.Data.MySQL.html" class="namespace">Poco::Data::MySQL</a></h1>
<h1 class="symbol">class Extractor</h1>
</div>
<div class="body">
<p>
<b>Library:</b> Data/MySQL<br />
<b>Package:</b> MySQL<br />
<b>Header:</b> Poco/Data/MySQL/Extractor.h</p>
<h2>Description</h2>
<div class="description">
<p>Extracts and converts data values from the result row returned by <a href="Poco.Data.MySQL.html" title="namespace Poco::Data::MySQL">MySQL</a>. If NULL is received, the incoming val value is not changed and false is returned </p>
</div>
<h2>Inheritance</h2>
<p><b>Direct Base Classes: </b><a href="Poco.Data.AbstractExtractor.html" title="class Poco::Data::AbstractExtractor">Poco::Data::AbstractExtractor</a></p>
<p><b>All Base Classes: </b><a href="Poco.Data.AbstractExtractor.html" title="class Poco::Data::AbstractExtractor">Poco::Data::AbstractExtractor</a></p>
<h2>Member Summary</h2>
<p><b>Member Functions: </b><a href="Poco.Data.MySQL.Extractor.html#458" title="Poco::Data::MySQL::Extractor::extract()">extract</a></p>
<p><b>Inherited Functions: </b><a href="Poco.Data.AbstractExtractor.html#2159" title="Poco::Data::AbstractExtractor::extract()">extract</a></p>
<h2>Constructors</h2>
<h3><a name="454">Extractor</a></h3>
<p class="decl"><a href="Poco.Data.MySQL.Extractor.html" title="class Poco::Data::MySQL::Extractor">Extractor</a>(<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.Data.MySQL.StatementExecutor.html" title="class Poco::Data::MySQL::StatementExecutor">StatementExecutor</a> &amp; st,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.Data.MySQL.ResultMetadata.html" title="class Poco::Data::MySQL::ResultMetadata">ResultMetadata</a> &amp; md<br />);</p>
<div class="description">
<p>Creates the <a href="Poco.Data.MySQL.Extractor.html" title="class Poco::Data::MySQL::Extractor">Extractor</a>. </p>
</div>
<h2>Destructor</h2>
<h3><a name="457">~Extractor</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual ~<a href="Poco.Data.MySQL.Extractor.html" title="class Poco::Data::MySQL::Extractor">Extractor</a>();</p>
<div class="description">
<p>Destroys the <a href="Poco.Data.MySQL.Extractor.html" title="class Poco::Data::MySQL::Extractor">Extractor</a>. </p>
</div>
<h2>Member Functions</h2>
<h3><a name="458">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11349" title="Poco::Int8">Poco::Int8</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11349" title="Poco::Int8">Int8</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2159" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="461">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11350" title="Poco::UInt8">Poco::UInt8</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11350" title="Poco::UInt8">UInt8</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2162" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="464">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11351" title="Poco::Int16">Poco::Int16</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11351" title="Poco::Int16">Int16</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2165" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="467">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11352" title="Poco::UInt16">Poco::UInt16</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11352" title="Poco::UInt16">UInt16</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2168" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="470">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11353" title="Poco::Int32">Poco::Int32</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11353" title="Poco::Int32">Int32</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2171" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="473">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11354" title="Poco::UInt32">Poco::UInt32</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11354" title="Poco::UInt32">UInt32</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2174" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="476">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11357" title="Poco::Int64">Poco::Int64</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11357" title="Poco::Int64">Int64</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2177" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="479">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.html#11358" title="Poco::UInt64">Poco::UInt64</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts an <a href="Poco.html#11358" title="Poco::UInt64">UInt64</a>. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2180" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="482">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;bool &amp; val<br />);</p>
<div class="description">
<p>Extracts a boolean. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2183" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="485">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;float &amp; val<br />);</p>
<div class="description">
<p>Extracts a float. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2186" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="488">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;double &amp; val<br />);</p>
<div class="description">
<p>Extracts a double. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2189" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="491">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;char &amp; val<br />);</p>
<div class="description">
<p>Extracts a single character. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2192" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="494">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;std::string &amp; val<br />);</p>
<div class="description">
<p>Extracts a string. </p>
</div>
<div class="description"><p><b>See also:</b> <a href="Poco.Data.AbstractExtractor.html#2195" title="Poco::Data::AbstractExtractor::extract()">Poco::Data::AbstractExtractor::extract()</a></p></div>
<h3><a name="497">extract</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool extract(<br />&nbsp;&nbsp;&nbsp;&nbsp;std::size_t pos,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.Data.BLOB.html" title="class Poco::Data::BLOB">Poco::Data::BLOB</a> &amp; val<br />);</p>
<div class="description">
<p>Extracts a <a href="Poco.Data.BLOB.html" title="class Poco::Data::BLOB">BLOB</a>. </p>
</div>
<p class="footer">POCO C++ Libraries 1.3.6-all<br />
Copyright &copy; 2009, <a href="http://pocoproject.org/" target="_blank">Applied Informatics Software Engineering GmbH and Contributors</a></p>

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