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<title>Xapian: API Documentation: xapian-core: Xapian::Error Class Reference</title>
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<div class="navpath"><a class="el" href="namespaceXapian.html">Xapian</a>::<a class="el" href="classXapian_1_1Error.html">Error</a>
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<h1>Xapian::Error Class Reference</h1><!-- doxytag: class="Xapian::Error" -->All exceptions thrown by <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library.">Xapian</a> are subclasses of <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a>.
<a href="#_details">More...</a>
<p>
<div class="dynheader">
Inheritance diagram for Xapian::Error:</div>
<div class="dynsection">
<p><center><img src="classXapian_1_1Error__inherit__graph.png" border="0" usemap="#Xapian_1_1Error__inherit__map" alt="Inheritance graph"></center>
<map name="Xapian_1_1Error__inherit__map">
<area shape="rect" href="classXapian_1_1LogicError.html" title="The base class for exceptions indicating errors in the program logic." alt="" coords="168,107,304,133"><area shape="rect" href="classXapian_1_1RuntimeError.html" title="The base class for exceptions indicating errors only detectable at runtime." alt="" coords="159,360,313,387"><area shape="rect" href="classXapian_1_1AssertionError.html" title="AssertionError is thrown if a logical assertion inside Xapian fails." alt="" coords="395,5,557,32"><area shape="rect" href="classXapian_1_1InvalidArgumentError.html" title="InvalidArgumentError indicates an invalid parameter value was passed to the API." alt="" coords="372,56,580,83"><area shape="rect" href="classXapian_1_1InvalidOperationError.html" title="InvalidOperationError indicates the API was used in an invalid way." alt="" coords="373,107,579,133"><area shape="rect" href="classXapian_1_1UnimplementedError.html" title="UnimplementedError indicates an attempt to use an unimplemented feature." alt="" coords="373,157,579,184"><area shape="rect" href="classXapian_1_1DatabaseError.html" title="DatabaseError indicates some sort of database related error." alt="" coords="393,208,559,235"><area shape="rect" href="classXapian_1_1DocNotFoundError.html" title="Indicates an attempt to access a document not present in the database." alt="" coords="381,259,571,285"><area shape="rect" href="classXapian_1_1FeatureUnavailableError.html" title="Indicates an attempt to use a feature which is unavailable." alt="" coords="364,309,588,336"><area shape="rect" href="classXapian_1_1InternalError.html" title="InternalError indicates a runtime problem of some sort." alt="" coords="400,360,552,387"><area shape="rect" href="classXapian_1_1NetworkError.html" title="Indicates a problem communicating with a remote database." alt="" coords="399,411,553,437"><area shape="rect" href="classXapian_1_1QueryParserError.html" title="Indicates a query string can't be parsed." alt="" coords="385,461,567,488"><area shape="rect" href="classXapian_1_1RangeError.html" title="RangeError indicates an attempt to access outside the bounds of a container." alt="" coords="404,512,548,539"><area shape="rect" href="classXapian_1_1SerialisationError.html" title="Indicates an error in the std::string serialisation of an object." alt="" coords="385,563,567,589"><area shape="rect" href="classXapian_1_1DatabaseCorruptError.html" title="DatabaseCorruptError indicates database corruption was detected." alt="" coords="640,107,853,133"><area shape="rect" href="classXapian_1_1DatabaseCreateError.html" title="DatabaseCreateError indicates a failure to create a database." alt="" coords="643,157,851,184"><area shape="rect" href="classXapian_1_1DatabaseLockError.html" title="DatabaseLockError indicates failure to lock a database." alt="" coords="649,208,844,235"><area shape="rect" href="classXapian_1_1DatabaseModifiedError.html" title="DatabaseModifiedError indicates a database was modified." alt="" coords="637,259,856,285"><area shape="rect" href="classXapian_1_1DatabaseOpeningError.html" title="DatabaseOpeningError indicates failure to open a database." alt="" coords="637,309,856,336"><area shape="rect" href="classXapian_1_1DatabaseVersionError.html" title="DatabaseVersionError indicates that a database is in an unsupported format." alt="" coords="905,309,1116,336"><area shape="rect" href="classXapian_1_1NetworkTimeoutError.html" title="Indicates a timeout expired while communicating with a remote database." alt="" coords="643,411,851,437"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="classXapian_1_1Error-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="136945e703317bdf6e18d8cf511a5bfb"></a><!-- doxytag: member="Xapian::Error::get_type" ref="136945e703317bdf6e18d8cf511a5bfb" args="() const " -->
const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1Error.html#136945e703317bdf6e18d8cf511a5bfb">get_type</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The type of this error (e.g. "DocNotFoundError".). <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ea05df48ea71dfd045da28ab984cdaa3"></a><!-- doxytag: member="Xapian::Error::get_msg" ref="ea05df48ea71dfd045da28ab984cdaa3" args="() const " -->
const std::string & </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1Error.html#ea05df48ea71dfd045da28ab984cdaa3">get_msg</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Message giving details of the error, intended for human consumption. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const std::string & </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1Error.html#90c683965555b4bc86b08e8667170e44">get_context</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Optional context information. <a href="#90c683965555b4bc86b08e8667170e44"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1Error.html#6f94a579f8e176f85c6fb036592dab61">get_error_string</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns any system error string associated with this exception. <a href="#6f94a579f8e176f85c6fb036592dab61"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bd64e380eb6d864dc907ee62c1f58a74"></a><!-- doxytag: member="Xapian::Error::get_description" ref="bd64e380eb6d864dc907ee62c1f58a74" args="() const " -->
std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1Error.html#bd64e380eb6d864dc907ee62c1f58a74">get_description</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a string describing this object. <br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
All exceptions thrown by <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library.">Xapian</a> are subclasses of <a class="el" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error.">Xapian::Error</a>.
<p>
This class can not be instantiated directly - instead a subclass should be used. <hr><h2>Member Function Documentation</h2>
<a class="anchor" name="90c683965555b4bc86b08e8667170e44"></a><!-- doxytag: member="Xapian::Error::get_context" ref="90c683965555b4bc86b08e8667170e44" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const std::string& Xapian::Error::get_context </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Optional context information.
<p>
This context is intended for use by <a class="el" href="classXapian_1_1ErrorHandler.html" title="Decide if a Xapian::Error exception should be ignored.">Xapian::ErrorHandler</a> (for example so it can know which remote server is unreliable and report the problem and remove that server from those being searched). But it's typically a plain-text string, and so also fit for human consumption.
</div>
</div><p>
<a class="anchor" name="6f94a579f8e176f85c6fb036592dab61"></a><!-- doxytag: member="Xapian::Error::get_error_string" ref="6f94a579f8e176f85c6fb036592dab61" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const char* Xapian::Error::get_error_string </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Returns any system error string associated with this exception.
<p>
The system error string may come from errno, h_errno (on UNIX), or GetLastError() (on MS Windows). If there is no associated system error string, NULL is returned.
</div>
</div><p>
<hr>The documentation for this class was generated from the following file:<ul>
<li>xapian/<a class="el" href="error_8h.html">error.h</a></ul>
</div>
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<address><small>
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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