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<title>Xapian: API Documentation: xapian-core: Xapian::ErrorHandler Class Reference</title>
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<div class="navpath"><a class="el" href="namespaceXapian.html">Xapian</a>::<a class="el" href="classXapian_1_1ErrorHandler.html">ErrorHandler</a>
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<h1>Xapian::ErrorHandler Class Reference</h1><!-- doxytag: class="Xapian::ErrorHandler" -->Decide if a <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a> exception should be ignored.
<a href="#_details">More...</a>
<p>
<p>
<a href="classXapian_1_1ErrorHandler-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2833c2fd77c9979574c63cee8db96e05"></a><!-- doxytag: member="Xapian::ErrorHandler::ErrorHandler" ref="2833c2fd77c9979574c63cee8db96e05" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1ErrorHandler.html#2833c2fd77c9979574c63cee8db96e05">ErrorHandler</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f4fccfeed11d85364088e5bed7f9048b"></a><!-- doxytag: member="Xapian::ErrorHandler::~ErrorHandler" ref="f4fccfeed11d85364088e5bed7f9048b" args="()" -->
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1ErrorHandler.html#f4fccfeed11d85364088e5bed7f9048b">~ErrorHandler</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">We require a virtual destructor because we have virtual methods. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1ErrorHandler.html#a3085bcf9a4e25bd2dd5d99710763b51">operator()</a> (<a class="el" href="classXapian_1_1Error.html">Xapian::Error</a> &error)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Handle a <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a> object. <a href="#a3085bcf9a4e25bd2dd5d99710763b51"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
Decide if a <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a> exception should be ignored.
<p>
You can create your own subclass of this class and pass in an instance of it when you construct a <a class="el" href="classXapian_1_1Enquire.html" title="This class provides an interface to the information retrieval system for the purpose...">Xapian::Enquire</a> object. <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a> exceptions which happen during the match process are passed to this object and it can decide whether they should propagate or whether <a class="el" href="classXapian_1_1Enquire.html" title="This class provides an interface to the information retrieval system for the purpose...">Enquire</a> should attempt to continue.<p>
The motivation is to allow searching over remote databases to handle a remote server which has died (both to allow results to be returned, and also so that such errors can be logged and dead servers temporarily removed from use). <hr><h2>Member Function Documentation</h2>
<a class="anchor" name="a3085bcf9a4e25bd2dd5d99710763b51"></a><!-- doxytag: member="Xapian::ErrorHandler::operator()" ref="a3085bcf9a4e25bd2dd5d99710763b51" args="(Xapian::Error &error)" -->
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<td class="memname">void Xapian::ErrorHandler::operator() </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classXapian_1_1Error.html">Xapian::Error</a> & </td>
<td class="paramname"> <em>error</em> </td>
<td> ) </td>
<td></td>
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<div class="memdoc">
<p>
Handle a <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a> object.
<p>
This method is called when a <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a> object is thrown and caught inside <a class="el" href="classXapian_1_1Enquire.html" title="This class provides an interface to the information retrieval system for the purpose...">Enquire</a>. If this is the first <a class="el" href="classXapian_1_1ErrorHandler.html" title="Decide if a Xapian::Error exception should be ignored.">ErrorHandler</a> that the <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Error</a> has been passed to, then the handle_error() virtual method is called, which allows the API user to decide how to handle the error.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>error</em> </td><td>The <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a> object under consideration. </td></tr>
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</dl>
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</div><p>
<hr>The documentation for this class was generated from the following file:<ul>
<li>xapian/<a class="el" href="errorhandler_8h.html">errorhandler.h</a></ul>
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Documentation for Xapian (version 1.2.12).<br>
Generated on 27 Jun 2012 by
<a href="http://www.doxygen.org/">Doxygen 1.5.9</a>.
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