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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>MySQL++ Reference Manual</title>
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<li class="navelem"><b>mysqlpp</b></li><li class="navelem"><a class="el" href="classmysqlpp_1_1SQLBuffer.html">SQLBuffer</a></li> </ul>
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<a href="#pub-types">Public Types</a> |
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<div class="title">mysqlpp::SQLBuffer Class Reference</div> </div>
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<p>Holds SQL data in string form plus type information for use in converting the string to compatible C++ data types.
<a href="classmysqlpp_1_1SQLBuffer.html#details">More...</a></p>
<p><code>#include <<a class="el" href="sql__buffer_8h_source.html">sql_buffer.h</a>></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a5e789c1879057f4106ee1de6614380a5"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a5e789c1879057f4106ee1de6614380a5"></a>
typedef size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a5e789c1879057f4106ee1de6614380a5">size_type</a></td></tr>
<tr class="memdesc:a5e789c1879057f4106ee1de6614380a5"><td class="mdescLeft"> </td><td class="mdescRight">Type of length values. <br/></td></tr>
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</table><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:a4e86b8febc1ab8c889fbd42c3c3dfc49"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a4e86b8febc1ab8c889fbd42c3c3dfc49">SQLBuffer</a> (const char *<a class="el" href="classmysqlpp_1_1SQLBuffer.html#aec25bd227cb23caf48c2210013d0f062">data</a>, <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a5e789c1879057f4106ee1de6614380a5">size_type</a> <a class="el" href="classmysqlpp_1_1SQLBuffer.html#aa2f38c8213db211e2d473aafca9397b4">length</a>, <a class="el" href="classmysqlpp_1_1mysql__type__info.html">mysql_type_info</a> <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a4a07b1f1eb32a2104b032550b0a97062">type</a>, bool <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a6189b995dad7f0128599e0635d031b3d">is_null</a>)</td></tr>
<tr class="memdesc:a4e86b8febc1ab8c889fbd42c3c3dfc49"><td class="mdescLeft"> </td><td class="mdescRight">Initialize object as a copy of a raw data buffer. <a href="#a4e86b8febc1ab8c889fbd42c3c3dfc49">More...</a><br/></td></tr>
<tr class="separator:a4e86b8febc1ab8c889fbd42c3c3dfc49"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:affbff8bda67d898d47a4df8498fe61b9"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="affbff8bda67d898d47a4df8498fe61b9"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#affbff8bda67d898d47a4df8498fe61b9">SQLBuffer</a> (const std::string &s, <a class="el" href="classmysqlpp_1_1mysql__type__info.html">mysql_type_info</a> <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a4a07b1f1eb32a2104b032550b0a97062">type</a>, bool <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a6189b995dad7f0128599e0635d031b3d">is_null</a>)</td></tr>
<tr class="memdesc:affbff8bda67d898d47a4df8498fe61b9"><td class="mdescLeft"> </td><td class="mdescRight">Initialize object as a copy of a C++ string object. <br/></td></tr>
<tr class="separator:affbff8bda67d898d47a4df8498fe61b9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a41e777868636c20ad09093e1ddb9368a"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a41e777868636c20ad09093e1ddb9368a"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a41e777868636c20ad09093e1ddb9368a">~SQLBuffer</a> ()</td></tr>
<tr class="memdesc:a41e777868636c20ad09093e1ddb9368a"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br/></td></tr>
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<tr class="memitem:abd3057457a375547d7e82fe4fbacbc45"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="abd3057457a375547d7e82fe4fbacbc45"></a>
<a class="el" href="classmysqlpp_1_1SQLBuffer.html">SQLBuffer</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#abd3057457a375547d7e82fe4fbacbc45">assign</a> (const char *<a class="el" href="classmysqlpp_1_1SQLBuffer.html#aec25bd227cb23caf48c2210013d0f062">data</a>, <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a5e789c1879057f4106ee1de6614380a5">size_type</a> <a class="el" href="classmysqlpp_1_1SQLBuffer.html#aa2f38c8213db211e2d473aafca9397b4">length</a>, <a class="el" href="classmysqlpp_1_1mysql__type__info.html">mysql_type_info</a> <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a4a07b1f1eb32a2104b032550b0a97062">type</a>=<a class="el" href="classmysqlpp_1_1mysql__type__info.html#a18d778e786cf06f63a7222129feed227">mysql_type_info::string_type</a>, bool <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a6189b995dad7f0128599e0635d031b3d">is_null</a>=false)</td></tr>
<tr class="memdesc:abd3057457a375547d7e82fe4fbacbc45"><td class="mdescLeft"> </td><td class="mdescRight">Replace contents of buffer with copy of given C string. <br/></td></tr>
<tr class="separator:abd3057457a375547d7e82fe4fbacbc45"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a36e353c31f41674a5c21d7a84c404845"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a36e353c31f41674a5c21d7a84c404845"></a>
<a class="el" href="classmysqlpp_1_1SQLBuffer.html">SQLBuffer</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a36e353c31f41674a5c21d7a84c404845">assign</a> (const std::string &s, <a class="el" href="classmysqlpp_1_1mysql__type__info.html">mysql_type_info</a> <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a4a07b1f1eb32a2104b032550b0a97062">type</a>=<a class="el" href="classmysqlpp_1_1mysql__type__info.html#a18d778e786cf06f63a7222129feed227">mysql_type_info::string_type</a>, bool <a class="el" href="classmysqlpp_1_1SQLBuffer.html#a6189b995dad7f0128599e0635d031b3d">is_null</a>=false)</td></tr>
<tr class="memdesc:a36e353c31f41674a5c21d7a84c404845"><td class="mdescLeft"> </td><td class="mdescRight">Replace contents of buffer with copy of given C++ string. <br/></td></tr>
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<tr class="memitem:aec25bd227cb23caf48c2210013d0f062"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aec25bd227cb23caf48c2210013d0f062"></a>
const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#aec25bd227cb23caf48c2210013d0f062">data</a> () const </td></tr>
<tr class="memdesc:aec25bd227cb23caf48c2210013d0f062"><td class="mdescLeft"> </td><td class="mdescRight">Return pointer to raw data buffer. <br/></td></tr>
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<tr class="memitem:aa90f561cb6da79c6ec6d5901992fd1b7"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa90f561cb6da79c6ec6d5901992fd1b7"></a>
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#aa90f561cb6da79c6ec6d5901992fd1b7">escape_q</a> () const </td></tr>
<tr class="memdesc:aa90f561cb6da79c6ec6d5901992fd1b7"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if we were initialized with a data type that must be escaped when used in a SQL query. <br/></td></tr>
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<tr class="memitem:aa2f38c8213db211e2d473aafca9397b4"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a5e789c1879057f4106ee1de6614380a5">size_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#aa2f38c8213db211e2d473aafca9397b4">length</a> () const </td></tr>
<tr class="memdesc:aa2f38c8213db211e2d473aafca9397b4"><td class="mdescLeft"> </td><td class="mdescRight">Return number of bytes in data buffer. <a href="#aa2f38c8213db211e2d473aafca9397b4">More...</a><br/></td></tr>
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<tr class="memitem:ab077d486f1a873ca0bc2c0e0596e8ca7"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab077d486f1a873ca0bc2c0e0596e8ca7"></a>
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#ab077d486f1a873ca0bc2c0e0596e8ca7">is_string</a> ()</td></tr>
<tr class="memdesc:ab077d486f1a873ca0bc2c0e0596e8ca7"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if type of buffer's contents is string. <br/></td></tr>
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<tr class="memitem:a6189b995dad7f0128599e0635d031b3d"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a6189b995dad7f0128599e0635d031b3d">is_null</a> () const </td></tr>
<tr class="memdesc:a6189b995dad7f0128599e0635d031b3d"><td class="mdescLeft"> </td><td class="mdescRight">Return true if buffer's contents represent a SQL null. <a href="#a6189b995dad7f0128599e0635d031b3d">More...</a><br/></td></tr>
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bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#abbdd3371fd3e0419cfe6fbbcccbf8d15">quote_q</a> () const </td></tr>
<tr class="memdesc:abbdd3371fd3e0419cfe6fbbcccbf8d15"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if we were initialized with a data type that must be quoted when used in a SQL query. <br/></td></tr>
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a1d7f060aea9c7ccd27c6d7a98c29417b">set_null</a> ()</td></tr>
<tr class="memdesc:a1d7f060aea9c7ccd27c6d7a98c29417b"><td class="mdescLeft"> </td><td class="mdescRight">Sets the internal SQL null flag. <br/></td></tr>
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<tr class="memitem:a4a07b1f1eb32a2104b032550b0a97062"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a4a07b1f1eb32a2104b032550b0a97062"></a>
const <a class="el" href="classmysqlpp_1_1mysql__type__info.html">mysql_type_info</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a4a07b1f1eb32a2104b032550b0a97062">type</a> () const </td></tr>
<tr class="memdesc:a4a07b1f1eb32a2104b032550b0a97062"><td class="mdescLeft"> </td><td class="mdescRight">Return the SQL type of the data held in the buffer. <br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Holds SQL data in string form plus type information for use in converting the string to compatible C++ data types. </p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="memname">mysqlpp::SQLBuffer::SQLBuffer </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>data</em>, </td>
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<td class="paramtype"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a5e789c1879057f4106ee1de6614380a5">size_type</a> </td>
<td class="paramname"><em>length</em>, </td>
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<td class="paramname"><em>type</em>, </td>
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<td>)</td>
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<p>Initialize object as a copy of a raw data buffer. </p>
<p>Copies the string into a new buffer one byte longer than the length value given, using that to hold a C string null terminator, just for safety. The length value we keep does not include this extra byte, allowing this same mechanism to work for both C strings and binary data. </p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<p>Return true if buffer's contents represent a SQL null. </p>
<p>The buffer's actual content will probably be "NULL" or something like it, but in the SQL data type system, a SQL null is distinct from a plain string with value "NULL". </p>
<p>Referenced by <a class="el" href="classmysqlpp_1_1SQLBuffer.html#abd3057457a375547d7e82fe4fbacbc45">assign()</a>, and <a class="el" href="classmysqlpp_1_1String.html#aae1a09ac03c7aedb4ce8242b64c99105">mysqlpp::String::is_null()</a>.</p>
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<td class="memname"><a class="el" href="classmysqlpp_1_1SQLBuffer.html#a5e789c1879057f4106ee1de6614380a5">size_type</a> mysqlpp::SQLBuffer::length </td>
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<p>Return number of bytes in data buffer. </p>
<p>Count does not include the trailing null we tack on to our copy of the buffer for ease of use in C string contexts. We do this because we can be holding binary data just as easily as a C string. </p>
<p>Referenced by <a class="el" href="classmysqlpp_1_1String.html#ac45da6949d25235fb08146cc54423184">mysqlpp::String::end()</a>, <a class="el" href="classmysqlpp_1_1SQLTypeAdapter.html#afed8e311f6481ee92f51d9cb0fe689f5">mysqlpp::SQLTypeAdapter::length()</a>, <a class="el" href="classmysqlpp_1_1String.html#a631286a235165cc9c2b653b5d852f65c">mysqlpp::String::length()</a>, and <a class="el" href="classmysqlpp_1_1String.html#a5832628cdfc820e57ddd44f16ad6c282">mysqlpp::String::to_string()</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="sql__buffer_8h_source.html">sql_buffer.h</a></li>
<li>sql_buffer.cpp</li>
</ul>
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