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<li class="navelem"><b>mysqlpp</b></li><li class="navelem"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html">OptionalExceptions</a></li>  </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">mysqlpp::OptionalExceptions Class Reference</div>  </div>
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<p>Interface allowing a class to have optional exceptions.  
 <a href="classmysqlpp_1_1OptionalExceptions.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="noexceptions_8h_source.html">noexceptions.h</a>&gt;</code></p>
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Inheritance diagram for mysqlpp::OptionalExceptions:</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:a45a3e93f56716abf10704419b5ba4f31"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html#a45a3e93f56716abf10704419b5ba4f31">OptionalExceptions</a> (bool e=true)</td></tr>
<tr class="memdesc:a45a3e93f56716abf10704419b5ba4f31"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default constructor.  <a href="#a45a3e93f56716abf10704419b5ba4f31">More...</a><br /></td></tr>
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<tr class="memitem:ae97334b7e5f89c1927c5d277b770db0a"><td class="memItemLeft" align="right" valign="top"><a id="ae97334b7e5f89c1927c5d277b770db0a"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html#ae97334b7e5f89c1927c5d277b770db0a">~OptionalExceptions</a> ()</td></tr>
<tr class="memdesc:ae97334b7e5f89c1927c5d277b770db0a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroy object. <br /></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html#a46ce5ac667513bac88c0bd459115f236">enable_exceptions</a> () const</td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html#a4e1a95b8d3c97338c66f21c5d5a4be20">disable_exceptions</a> () const</td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html#acac3ee271ab36b9f65e6c2110a04ffff">throw_exceptions</a> () const</td></tr>
<tr class="memdesc:acac3ee271ab36b9f65e6c2110a04ffff"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if exceptions are enabled. <br /></td></tr>
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Protected Member Functions</h2></td></tr>
<tr class="memitem:a5e4f4a7a1526ceaef3308a385bd28a10"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html#a5e4f4a7a1526ceaef3308a385bd28a10">set_exceptions</a> (bool e) const</td></tr>
<tr class="memdesc:a5e4f4a7a1526ceaef3308a385bd28a10"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets the exception state to a particular value.  <a href="#a5e4f4a7a1526ceaef3308a385bd28a10">More...</a><br /></td></tr>
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Friends</h2></td></tr>
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class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1OptionalExceptions.html#ac41c56580e33a404b4f43f38f26bea82">NoExceptions</a></td></tr>
<tr class="memdesc:ac41c56580e33a404b4f43f38f26bea82"><td class="mdescLeft">&#160;</td><td class="mdescRight">Declare <a class="el" href="classmysqlpp_1_1NoExceptions.html" title="Disable exceptions in an object derived from OptionalExceptions.">NoExceptions</a> to be our friend so it can access our protected functions. <br /></td></tr>
<tr class="separator:ac41c56580e33a404b4f43f38f26bea82"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Interface allowing a class to have optional exceptions. </p>
<p>A class derives from this one to acquire a standard interface for disabling exceptions, possibly only temporarily. By default, exceptions are enabled.</p>
<p>Note that all methods are const even though some of them change our internal flag indicating whether exceptions should be thrown. This is justifiable because this is just an interface class, and it changes the behavior of our subclass literally only in exceptional conditions. This Jesuitical interpretation of "const" is required because you may want to disable exceptions on const subclass instances.</p>
<p>If it makes you feel better about this, consider that the real change isn't within the const <a class="el" href="classmysqlpp_1_1OptionalExceptions.html" title="Interface allowing a class to have optional exceptions.">OptionalExceptions</a> subclass instance. What changes is the code wrapping the method call on that instance that can optionally throw an exception. This outside code is in a better position to say what "const" means than the subclass instance. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a45a3e93f56716abf10704419b5ba4f31"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a45a3e93f56716abf10704419b5ba4f31">&#9670;&nbsp;</a></span>OptionalExceptions()</h2>

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          <td class="memname">mysqlpp::OptionalExceptions::OptionalExceptions </td>
          <td>(</td>
          <td class="paramtype">bool&#160;</td>
          <td class="paramname"><em>e</em> = <code>true</code></td><td>)</td>
          <td></td>
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<p>Default constructor. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">e</td><td>if true, exceptions are enabled (this is the default) </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="a5e4f4a7a1526ceaef3308a385bd28a10"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5e4f4a7a1526ceaef3308a385bd28a10">&#9670;&nbsp;</a></span>set_exceptions()</h2>

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          <td class="memname">void mysqlpp::OptionalExceptions::set_exceptions </td>
          <td>(</td>
          <td class="paramtype">bool&#160;</td>
          <td class="paramname"><em>e</em></td><td>)</td>
          <td> const</td>
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<p>Sets the exception state to a particular value. </p>
<p>This method is protected because it is only intended for use by subclasses' copy constructors and the like. </p>

<p class="reference">Referenced by <a class="el" href="classmysqlpp_1_1ResultBase.html#a3649538671f94a215c72ad03ff9025aa">mysqlpp::ResultBase::copy()</a>, <a class="el" href="classmysqlpp_1_1Connection.html#a44070d9f1bee49126320ad815a854ed3">mysqlpp::Connection::copy()</a>, and <a class="el" href="classmysqlpp_1_1Query.html#a75982ff4f3b5fe603ee6041ed64172ce">mysqlpp::Query::operator=()</a>.</p>

</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="noexceptions_8h_source.html">noexceptions.h</a></li>
</ul>
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