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<li class="navelem"><b>mysqlpp</b></li><li class="navelem"><a class="el" href="structmysqlpp_1_1SQLParseElement.html">SQLParseElement</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">mysqlpp::SQLParseElement Struct Reference</div> </div>
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<p>Used within <a class="el" href="classmysqlpp_1_1Query.html" title="A class for building and executing SQL queries.">Query</a> to hold elements for parameterized queries.
<a href="structmysqlpp_1_1SQLParseElement.html#details">More...</a></p>
<p><code>#include <<a class="el" href="qparms_8h_source.html">qparms.h</a>></code></p>
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Collaboration diagram for mysqlpp::SQLParseElement:</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:a5095f861effa2f1695c3cc29f79f825e"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structmysqlpp_1_1SQLParseElement.html#a5095f861effa2f1695c3cc29f79f825e">SQLParseElement</a> (std::string b, char o, signed char n)</td></tr>
<tr class="memdesc:a5095f861effa2f1695c3cc29f79f825e"><td class="mdescLeft"> </td><td class="mdescRight">Create object. <a href="#a5095f861effa2f1695c3cc29f79f825e">More...</a><br /></td></tr>
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Public Attributes</h2></td></tr>
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std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="structmysqlpp_1_1SQLParseElement.html#a8b0a5afd4a8b825d13579b1427e94331">before</a></td></tr>
<tr class="memdesc:a8b0a5afd4a8b825d13579b1427e94331"><td class="mdescLeft"> </td><td class="mdescRight">string inserted before the parameter <br /></td></tr>
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char </td><td class="memItemRight" valign="bottom"><a class="el" href="structmysqlpp_1_1SQLParseElement.html#a99ca4660111774c7bdfc5d0a142d9f00">option</a></td></tr>
<tr class="memdesc:a99ca4660111774c7bdfc5d0a142d9f00"><td class="mdescLeft"> </td><td class="mdescRight">the parameter option, or blank if none <br /></td></tr>
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signed char </td><td class="memItemRight" valign="bottom"><a class="el" href="structmysqlpp_1_1SQLParseElement.html#adad4d34b5d3435cf327382a0cc343323">num</a></td></tr>
<tr class="memdesc:adad4d34b5d3435cf327382a0cc343323"><td class="mdescLeft"> </td><td class="mdescRight">the parameter position to use <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Used within <a class="el" href="classmysqlpp_1_1Query.html" title="A class for building and executing SQL queries.">Query</a> to hold elements for parameterized queries. </p>
<p>Each element has three parts:</p>
<p>The concept behind the <code>before</code> variable needs a little explaining. When a template query is parsed, each parameter is parsed into one of these <a class="el" href="structmysqlpp_1_1SQLParseElement.html" title="Used within Query to hold elements for parameterized queries.">SQLParseElement</a> objects, but the non-parameter parts of the template also have to be stored somewhere. MySQL++ chooses to attach the text leading up to a parameter to that parameter. So, the <code>before</code> string is simply the text copied literally into the finished query before we insert a value for the parameter.</p>
<p>The <code>option</code> character is currently one of 'q', 'Q', 'r', 'R' or ' '. See the "Template Queries" chapter in the user manual for details.</p>
<p>The position value (<code>num</code>) allows a template query to have its parameters in a different order than in the <a class="el" href="classmysqlpp_1_1Query.html" title="A class for building and executing SQL queries.">Query</a> method call. An example of how this can be helpful is in the "Template Queries" chapter of the user manual. </p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
<a id="a5095f861effa2f1695c3cc29f79f825e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5095f861effa2f1695c3cc29f79f825e">◆ </a></span>SQLParseElement()</h2>
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<td class="memname">mysqlpp::SQLParseElement::SQLParseElement </td>
<td>(</td>
<td class="paramtype">std::string </td>
<td class="paramname"><em>b</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">char </td>
<td class="paramname"><em>o</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">signed char </td>
<td class="paramname"><em>n</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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<p>Create object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">b</td><td>the 'before' value </td></tr>
<tr><td class="paramname">o</td><td>the 'option' value </td></tr>
<tr><td class="paramname">n</td><td>the 'num' value </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="qparms_8h_source.html">qparms.h</a></li>
</ul>
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