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<div class="navpath"><a class="el" href="namespaceXapian.html">Xapian</a>::<a class="el" href="classXapian_1_1DatabaseVersionError.html">DatabaseVersionError</a>
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<h1>Xapian::DatabaseVersionError Class Reference</h1><!-- doxytag: class="Xapian::DatabaseVersionError" --><!-- doxytag: inherits="Xapian::DatabaseOpeningError" --><a class="el" href="classXapian_1_1DatabaseVersionError.html" title="DatabaseVersionError indicates that a database is in an unsupported format.">DatabaseVersionError</a> indicates that a database is in an unsupported format.
<a href="#_details">More...</a>
<p>
<div class="dynheader">
Inheritance diagram for Xapian::DatabaseVersionError:</div>
<div class="dynsection">
<p><center><img src="classXapian_1_1DatabaseVersionError__inherit__graph.png" border="0" usemap="#Xapian_1_1DatabaseVersionError__inherit__map" alt="Inheritance graph"></center>
<map name="Xapian_1_1DatabaseVersionError__inherit__map">
<area shape="rect" href="classXapian_1_1DatabaseOpeningError.html" title="DatabaseOpeningError indicates failure to open a database." alt="" coords="5,239,224,265"><area shape="rect" href="classXapian_1_1DatabaseError.html" title="DatabaseError indicates some sort of database related error." alt="" coords="32,161,197,188"><area shape="rect" href="classXapian_1_1RuntimeError.html" title="The base class for exceptions indicating errors only detectable at runtime." alt="" coords="37,84,192,111"><area shape="rect" href="classXapian_1_1Error.html" title="All exceptions thrown by Xapian are subclasses of Xapian::Error." alt="" coords="63,7,167,33"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="classXapian_1_1DatabaseVersionError-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"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1DatabaseVersionError.html#7f2453fbb50afe85547c61de7ebc4f84">DatabaseVersionError</a> (const std::string &msg_, const std::string &context_=std::string(), int errno_=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">General purpose constructor. <a href="#7f2453fbb50afe85547c61de7ebc4f84"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1DatabaseVersionError.html#5382c59e0f2cda1b0f7a7839142bbc27">DatabaseVersionError</a> (const std::string &msg_, int errno_)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Construct from message and errno value. <a href="#5382c59e0f2cda1b0f7a7839142bbc27"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
<a class="el" href="classXapian_1_1DatabaseVersionError.html" title="DatabaseVersionError indicates that a database is in an unsupported format.">DatabaseVersionError</a> indicates that a database is in an unsupported format.
<p>
From time to time, new versions of <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library.">Xapian</a> will require the database format to be changed, to allow new information to be stored or new optimisations to be performed. Backwards compatibility will sometimes be maintained, so that new versions of <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library.">Xapian</a> can open old databases, but in some cases <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library.">Xapian</a> will be unable to open a database because it is in too old (or new) a format. This can be resolved either be upgrading or downgrading the version of <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library.">Xapian</a> in use, or by rebuilding the database from scratch with the current version of <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library.">Xapian</a>. <hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="7f2453fbb50afe85547c61de7ebc4f84"></a><!-- doxytag: member="Xapian::DatabaseVersionError::DatabaseVersionError" ref="7f2453fbb50afe85547c61de7ebc4f84" args="(const std::string &msg_, const std::string &context_=std::string(), int errno_=0)" -->
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<td class="memname">Xapian::DatabaseVersionError::DatabaseVersionError </td>
<td>(</td>
<td class="paramtype">const std::string & </td>
<td class="paramname"> <em>msg_</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const std::string & </td>
<td class="paramname"> <em>context_</em> = <code>std::string()</code>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>errno_</em> = <code>0</code></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline, explicit]</code></td>
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<p>
General purpose constructor.
<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>msg_</em> </td><td>Message giving details of the error, intended for human consumption. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>context_</em> </td><td>Optional context information for this error. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>errno_</em> </td><td>Optional errno value associated with this error. </td></tr>
</table>
</dl>
</div>
</div><p>
<a class="anchor" name="5382c59e0f2cda1b0f7a7839142bbc27"></a><!-- doxytag: member="Xapian::DatabaseVersionError::DatabaseVersionError" ref="5382c59e0f2cda1b0f7a7839142bbc27" args="(const std::string &msg_, int errno_)" -->
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<td class="memname">Xapian::DatabaseVersionError::DatabaseVersionError </td>
<td>(</td>
<td class="paramtype">const std::string & </td>
<td class="paramname"> <em>msg_</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>errno_</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline]</code></td>
</tr>
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<p>
Construct from message and errno value.
<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>msg_</em> </td><td>Message giving details of the error, intended for human consumption. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>errno_</em> </td><td>Optional errno value associated with this error. </td></tr>
</table>
</dl>
</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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