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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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<li class="navelem"><b>mysqlpp</b></li><li class="navelem"><a class="el" href="classmysqlpp_1_1BadQuery.html">BadQuery</a></li> </ul>
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<div class="summary">
<a href="#pub-methods">Public Member Functions</a> |
<a href="classmysqlpp_1_1BadQuery-members.html">List of all members</a> </div>
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<div class="title">mysqlpp::BadQuery Class Reference</div> </div>
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<p><a class="el" href="classmysqlpp_1_1Exception.html" title="Base class for all MySQL++ custom exceptions.">Exception</a> thrown when the database server encounters a problem while processing your query.
<a href="classmysqlpp_1_1BadQuery.html#details">More...</a></p>
<p><code>#include <<a class="el" href="exceptions_8h_source.html">exceptions.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for mysqlpp::BadQuery:</div>
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<div class="center"><img src="classmysqlpp_1_1BadQuery__inherit__graph.png" border="0" usemap="#mysqlpp_1_1BadQuery_inherit__map" alt="Inheritance graph"/></div>
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Collaboration diagram for mysqlpp::BadQuery:</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a49600596b86773d8a13f0cd15a02118a"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1BadQuery.html#a49600596b86773d8a13f0cd15a02118a">BadQuery</a> (const char *w="", int e=0)</td></tr>
<tr class="memdesc:a49600596b86773d8a13f0cd15a02118a"><td class="mdescLeft"> </td><td class="mdescRight">Create exception object. <a href="#a49600596b86773d8a13f0cd15a02118a">More...</a><br /></td></tr>
<tr class="separator:a49600596b86773d8a13f0cd15a02118a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a35999dcc51a6cd76a03bd4a1d565d888"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1BadQuery.html#a35999dcc51a6cd76a03bd4a1d565d888">BadQuery</a> (const std::string &w, int e=0)</td></tr>
<tr class="memdesc:a35999dcc51a6cd76a03bd4a1d565d888"><td class="mdescLeft"> </td><td class="mdescRight">Create exception object. <a href="#a35999dcc51a6cd76a03bd4a1d565d888">More...</a><br /></td></tr>
<tr class="separator:a35999dcc51a6cd76a03bd4a1d565d888"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad0ba4ef64626959ccdddd660eda95bd8"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1BadQuery.html#ad0ba4ef64626959ccdddd660eda95bd8">errnum</a> () const</td></tr>
<tr class="memdesc:ad0ba4ef64626959ccdddd660eda95bd8"><td class="mdescLeft"> </td><td class="mdescRight">Return the error number corresponding to the error message returned by <a class="el" href="classmysqlpp_1_1Exception.html#af59280d82dba0627192a26cdcf53ba96" title="Returns explanation of why exception was thrown.">what()</a> <a href="#ad0ba4ef64626959ccdddd660eda95bd8">More...</a><br /></td></tr>
<tr class="separator:ad0ba4ef64626959ccdddd660eda95bd8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classmysqlpp_1_1Exception"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classmysqlpp_1_1Exception')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classmysqlpp_1_1Exception.html">mysqlpp::Exception</a></td></tr>
<tr class="memitem:ac8fcfb052b81644ebf6d966d626e6ca9 inherit pub_methods_classmysqlpp_1_1Exception"><td class="memItemLeft" align="right" valign="top"><a id="ac8fcfb052b81644ebf6d966d626e6ca9"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1Exception.html#ac8fcfb052b81644ebf6d966d626e6ca9">Exception</a> (const <a class="el" href="classmysqlpp_1_1Exception.html">Exception</a> &e) MAY_THROW()</td></tr>
<tr class="memdesc:ac8fcfb052b81644ebf6d966d626e6ca9 inherit pub_methods_classmysqlpp_1_1Exception"><td class="mdescLeft"> </td><td class="mdescRight">Create exception object as copy of another. <br /></td></tr>
<tr class="separator:ac8fcfb052b81644ebf6d966d626e6ca9 inherit pub_methods_classmysqlpp_1_1Exception"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2103d37da48b9824fa4407863aef9e0e inherit pub_methods_classmysqlpp_1_1Exception"><td class="memItemLeft" align="right" valign="top"><a id="a2103d37da48b9824fa4407863aef9e0e"></a>
<a class="el" href="classmysqlpp_1_1Exception.html">Exception</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1Exception.html#a2103d37da48b9824fa4407863aef9e0e">operator=</a> (const <a class="el" href="classmysqlpp_1_1Exception.html">Exception</a> &rhs) throw ()</td></tr>
<tr class="memdesc:a2103d37da48b9824fa4407863aef9e0e inherit pub_methods_classmysqlpp_1_1Exception"><td class="mdescLeft"> </td><td class="mdescRight">Assign another exception object's contents to this one. <br /></td></tr>
<tr class="separator:a2103d37da48b9824fa4407863aef9e0e inherit pub_methods_classmysqlpp_1_1Exception"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a82b1a9a71b10a4b83cd67905689d700d inherit pub_methods_classmysqlpp_1_1Exception"><td class="memItemLeft" align="right" valign="top"><a id="a82b1a9a71b10a4b83cd67905689d700d"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1Exception.html#a82b1a9a71b10a4b83cd67905689d700d">~Exception</a> () throw ()</td></tr>
<tr class="memdesc:a82b1a9a71b10a4b83cd67905689d700d inherit pub_methods_classmysqlpp_1_1Exception"><td class="mdescLeft"> </td><td class="mdescRight">Destroy exception object. <br /></td></tr>
<tr class="separator:a82b1a9a71b10a4b83cd67905689d700d inherit pub_methods_classmysqlpp_1_1Exception"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af59280d82dba0627192a26cdcf53ba96 inherit pub_methods_classmysqlpp_1_1Exception"><td class="memItemLeft" align="right" valign="top"><a id="af59280d82dba0627192a26cdcf53ba96"></a>
virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1Exception.html#af59280d82dba0627192a26cdcf53ba96">what</a> () const throw ()</td></tr>
<tr class="memdesc:af59280d82dba0627192a26cdcf53ba96 inherit pub_methods_classmysqlpp_1_1Exception"><td class="mdescLeft"> </td><td class="mdescRight">Returns explanation of why exception was thrown. <br /></td></tr>
<tr class="separator:af59280d82dba0627192a26cdcf53ba96 inherit pub_methods_classmysqlpp_1_1Exception"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pro_methods_classmysqlpp_1_1Exception"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_classmysqlpp_1_1Exception')"><img src="closed.png" alt="-"/> Protected Member Functions inherited from <a class="el" href="classmysqlpp_1_1Exception.html">mysqlpp::Exception</a></td></tr>
<tr class="memitem:ad9410f221db3876329a168d6c6a0864f inherit pro_methods_classmysqlpp_1_1Exception"><td class="memItemLeft" align="right" valign="top"><a id="ad9410f221db3876329a168d6c6a0864f"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1Exception.html#ad9410f221db3876329a168d6c6a0864f">Exception</a> (const char *w="") throw ()</td></tr>
<tr class="memdesc:ad9410f221db3876329a168d6c6a0864f inherit pro_methods_classmysqlpp_1_1Exception"><td class="mdescLeft"> </td><td class="mdescRight">Create exception object. <br /></td></tr>
<tr class="separator:ad9410f221db3876329a168d6c6a0864f inherit pro_methods_classmysqlpp_1_1Exception"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab6bce06d1c5f5a8ace87764ea118e25d inherit pro_methods_classmysqlpp_1_1Exception"><td class="memItemLeft" align="right" valign="top"><a id="ab6bce06d1c5f5a8ace87764ea118e25d"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1Exception.html#ab6bce06d1c5f5a8ace87764ea118e25d">Exception</a> (const std::string &w) throw ()</td></tr>
<tr class="memdesc:ab6bce06d1c5f5a8ace87764ea118e25d inherit pro_methods_classmysqlpp_1_1Exception"><td class="mdescLeft"> </td><td class="mdescRight">Create exception object. <br /></td></tr>
<tr class="separator:ab6bce06d1c5f5a8ace87764ea118e25d inherit pro_methods_classmysqlpp_1_1Exception"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pro_attribs_classmysqlpp_1_1Exception"><td colspan="2" onclick="javascript:toggleInherit('pro_attribs_classmysqlpp_1_1Exception')"><img src="closed.png" alt="-"/> Protected Attributes inherited from <a class="el" href="classmysqlpp_1_1Exception.html">mysqlpp::Exception</a></td></tr>
<tr class="memitem:a9d1f31934daa02fdbedfe419be524191 inherit pro_attribs_classmysqlpp_1_1Exception"><td class="memItemLeft" align="right" valign="top"><a id="a9d1f31934daa02fdbedfe419be524191"></a>
std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1Exception.html#a9d1f31934daa02fdbedfe419be524191">what_</a></td></tr>
<tr class="memdesc:a9d1f31934daa02fdbedfe419be524191 inherit pro_attribs_classmysqlpp_1_1Exception"><td class="mdescLeft"> </td><td class="mdescRight">explanation of why exception was thrown <br /></td></tr>
<tr class="separator:a9d1f31934daa02fdbedfe419be524191 inherit pro_attribs_classmysqlpp_1_1Exception"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p><a class="el" href="classmysqlpp_1_1Exception.html" title="Base class for all MySQL++ custom exceptions.">Exception</a> thrown when the database server encounters a problem while processing your query. </p>
<p>Unlike most other MySQL++ exceptions, which carry just an error message, this type carries an error number to preserve <a class="el" href="classmysqlpp_1_1Connection.html#a3cb1bf601b19dbb87b36bed4590f4214" title="Return last error number associated with this connection.">Connection::errnum()</a>'s return value at the point the exception is thrown. We do this because when using the <a class="el" href="classmysqlpp_1_1Transaction.html" title="Helper object for creating exception-safe SQL transactions.">Transaction</a> class, the rollback process that occurs during stack unwinding issues a query to the database server, overwriting the error value. This rollback should always succeed, so this effect can fool code that relies on <a class="el" href="classmysqlpp_1_1Connection.html#a3cb1bf601b19dbb87b36bed4590f4214" title="Return last error number associated with this connection.">Connection::errnum()</a> into believing that there was no error.</p>
<p>Beware that in older versions of MySQL++, this was effectively the generic exception type. (This is most especially true in v1.7.x, but it continued to a lesser extent through the v2.x series.) When converting old code to new versions of MySQL++, it's therefore possible to get seemingly "new" exceptions thrown, which could crash your program if you don't also catch a more generic type like <a class="el" href="classmysqlpp_1_1Exception.html" title="Base class for all MySQL++ custom exceptions.">mysqlpp::Exception</a> or std::exception. </p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
<a id="a49600596b86773d8a13f0cd15a02118a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a49600596b86773d8a13f0cd15a02118a">◆ </a></span>BadQuery() <span class="overload">[1/2]</span></h2>
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<td class="memname">mysqlpp::BadQuery::BadQuery </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>w</em> = <code>""</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>e</em> = <code>0</code> </td>
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<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">explicit</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Create exception object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">w</td><td>explanation for why the exception was thrown </td></tr>
<tr><td class="paramname">e</td><td>the error number from the underlying database API </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="a35999dcc51a6cd76a03bd4a1d565d888"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a35999dcc51a6cd76a03bd4a1d565d888">◆ </a></span>BadQuery() <span class="overload">[2/2]</span></h2>
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<td class="mlabels-left">
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<td class="memname">mysqlpp::BadQuery::BadQuery </td>
<td>(</td>
<td class="paramtype">const std::string & </td>
<td class="paramname"><em>w</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>e</em> = <code>0</code> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">explicit</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Create exception object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">w</td><td>explanation for why the exception was thrown </td></tr>
<tr><td class="paramname">e</td><td>the error number from the underlying database API </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="ad0ba4ef64626959ccdddd660eda95bd8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad0ba4ef64626959ccdddd660eda95bd8">◆ </a></span>errnum()</h2>
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<td class="memname">int mysqlpp::BadQuery::errnum </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>Return the error number corresponding to the error message returned by <a class="el" href="classmysqlpp_1_1Exception.html#af59280d82dba0627192a26cdcf53ba96" title="Returns explanation of why exception was thrown.">what()</a> </p>
<p>This may return the same value as <a class="el" href="classmysqlpp_1_1Connection.html#a3cb1bf601b19dbb87b36bed4590f4214" title="Return last error number associated with this connection.">Connection::errnum()</a>, but not always. See the overview documentation for this class for the reason for the difference. </p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="exceptions_8h_source.html">exceptions.h</a></li>
</ul>
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