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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<h1>insertpolicy.h</h1><a href="insertpolicy_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
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<a name="l00029"></a>00029
<a name="l00030"></a>00030
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">/***********************************************************************</span>
<a name="l00033"></a>00033 <span class="comment"> Copyright (c) 2008-2009 by AboveNet, Inc., and (c) 2009 by Educational</span>
<a name="l00034"></a>00034 <span class="comment"> Technology Resources, Inc. Others may also hold copyrights on code</span>
<a name="l00035"></a>00035 <span class="comment"> in this file. See the CREDITS file in the top directory of the</span>
<a name="l00036"></a>00036 <span class="comment"> distribution for details.</span>
<a name="l00037"></a>00037 <span class="comment"></span>
<a name="l00038"></a>00038 <span class="comment"> This file is part of MySQL++.</span>
<a name="l00039"></a>00039 <span class="comment"></span>
<a name="l00040"></a>00040 <span class="comment"> MySQL++ is free software; you can redistribute it and/or modify it</span>
<a name="l00041"></a>00041 <span class="comment"> under the terms of the GNU Lesser General Public License as published</span>
<a name="l00042"></a>00042 <span class="comment"> by the Free Software Foundation; either version 2.1 of the License, or</span>
<a name="l00043"></a>00043 <span class="comment"> (at your option) any later version.</span>
<a name="l00044"></a>00044 <span class="comment"></span>
<a name="l00045"></a>00045 <span class="comment"> MySQL++ is distributed in the hope that it will be useful, but WITHOUT</span>
<a name="l00046"></a>00046 <span class="comment"> ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or</span>
<a name="l00047"></a>00047 <span class="comment"> FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public</span>
<a name="l00048"></a>00048 <span class="comment"> License for more details.</span>
<a name="l00049"></a>00049 <span class="comment"></span>
<a name="l00050"></a>00050 <span class="comment"> You should have received a copy of the GNU Lesser General Public</span>
<a name="l00051"></a>00051 <span class="comment"> License along with MySQL++; if not, write to the Free Software</span>
<a name="l00052"></a>00052 <span class="comment"> Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301</span>
<a name="l00053"></a>00053 <span class="comment"> USA</span>
<a name="l00054"></a>00054 <span class="comment">***********************************************************************/</span>
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="preprocessor">#if !defined(MYSQLPP_INSERTPOLICY_H)</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#define MYSQLPP_INSERTPOLICY_H</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span>
<a name="l00065"></a>00065 <span class="keyword">template</span> <<span class="keyword">class</span> AccessController = Transaction>
<a name="l00066"></a><a class="code" href="classRowCountInsertPolicy.html">00066</a> <span class="keyword">class </span>MYSQLPP_EXPORT <a class="code" href="classRowCountInsertPolicy.html">RowCountInsertPolicy</a>
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 <span class="keyword">public</span>:
<a name="l00070"></a><a class="code" href="classRowCountInsertPolicy.html#da78427b0495b6dcffdbbedfbd91d1bc">00070</a> <a class="code" href="classRowCountInsertPolicy.html">RowCountInsertPolicy</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rows) :
<a name="l00071"></a>00071 cur_rows_(0),
<a name="l00072"></a>00072 max_rows_(rows)
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075
<a name="l00077"></a><a class="code" href="classRowCountInsertPolicy.html#ed2bda29ac9d38bff3b47f4a285e1d6b">00077</a> ~<a class="code" href="classRowCountInsertPolicy.html">RowCountInsertPolicy</a>() { }
<a name="l00078"></a>00078
<a name="l00083"></a>00083 <span class="keyword">template</span> <<span class="keyword">class</span> RowT>
<a name="l00084"></a><a class="code" href="classRowCountInsertPolicy.html#bbb91511fa21f267890e0464e17ad69d">00084</a> <span class="keywordtype">bool</span> can_add(<span class="keywordtype">int</span>, <span class="keyword">const</span> RowT&)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 <span class="keywordflow">if</span> (++cur_rows_ > max_rows_) {
<a name="l00087"></a>00087 cur_rows_ = 0;
<a name="l00088"></a>00088 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 <span class="keywordflow">else</span> {
<a name="l00091"></a>00091 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00092"></a>00092 }
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00096"></a><a class="code" href="classRowCountInsertPolicy.html#4904cc50ad00c8eae56bff0d7db9e52c">00096</a> <span class="keyword">typedef</span> AccessController access_controller;
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="keyword">private</span>:
<a name="l00099"></a>00099 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> cur_rows_;
<a name="l00100"></a>00100 <span class="keywordtype">unsigned</span> <span class="keyword">const</span> <span class="keywordtype">int</span> max_rows_;
<a name="l00101"></a>00101 };
<a name="l00102"></a>00102
<a name="l00103"></a>00103
<a name="l00111"></a>00111 <span class="keyword">template</span> <<span class="keyword">class</span> AccessController = Transaction>
<a name="l00112"></a><a class="code" href="classSizeThresholdInsertPolicy.html">00112</a> <span class="keyword">class </span>MYSQLPP_EXPORT SizeThresholdInsertPolicy
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="keyword">public</span>:
<a name="l00116"></a><a class="code" href="classSizeThresholdInsertPolicy.html#906fb0ee7cd08e682d348b9d1fb083e6">00116</a> SizeThresholdInsertPolicy(<span class="keywordtype">int</span> size) :
<a name="l00117"></a>00117 size_(size)
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120
<a name="l00122"></a><a class="code" href="classSizeThresholdInsertPolicy.html#d8258f038c4e5a03b5517558f00e0849">00122</a> ~SizeThresholdInsertPolicy() { }
<a name="l00123"></a>00123
<a name="l00131"></a>00131 <span class="keyword">template</span> <<span class="keyword">class</span> RowT>
<a name="l00132"></a><a class="code" href="classSizeThresholdInsertPolicy.html#2a1e33e96b573ef9e0a58edd89da72a0">00132</a> <span class="keywordtype">bool</span> can_add(<span class="keywordtype">int</span> size, <span class="keyword">const</span> RowT& object)<span class="keyword"> const</span>
<a name="l00133"></a>00133 <span class="keyword"> </span>{
<a name="l00134"></a>00134 <span class="keywordflow">return</span> (size < size_);
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00138"></a><a class="code" href="classSizeThresholdInsertPolicy.html#33d4e8d394d426d4c0e76301965ac506">00138</a> <span class="keyword">typedef</span> AccessController access_controller;
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keyword">private</span>:
<a name="l00141"></a>00141 <span class="keywordtype">int</span> size_;
<a name="l00142"></a>00142 };
<a name="l00143"></a>00143
<a name="l00144"></a>00144
<a name="l00152"></a>00152 <span class="keyword">template</span> <<span class="keyword">class</span> AccessController = Transaction>
<a name="l00153"></a><a class="code" href="classMaxPacketInsertPolicy.html">00153</a> <span class="keyword">class </span>MYSQLPP_EXPORT MaxPacketInsertPolicy
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 <span class="keyword">public</span>:
<a name="l00161"></a><a class="code" href="classMaxPacketInsertPolicy.html#a29c31d5052c44cbf6ee8aa112b1490d">00161</a> MaxPacketInsertPolicy(Connection* con, <span class="keywordtype">int</span> size) :
<a name="l00162"></a>00162 conn_(con), size_(size)
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
<a name="l00174"></a><a class="code" href="classMaxPacketInsertPolicy.html#9c313c2291382b11c12b5d5adb5c6b7b">00174</a> MaxPacketInsertPolicy(<span class="keywordtype">int</span> size) :
<a name="l00175"></a>00175 conn_(0), size_(size)
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00180"></a><a class="code" href="classMaxPacketInsertPolicy.html#4ec3c03e60ebfdb6d15b76b254826903">00180</a> ~MaxPacketInsertPolicy() { }
<a name="l00181"></a>00181
<a name="l00189"></a>00189 <span class="keyword">template</span> <<span class="keyword">class</span> RowT>
<a name="l00190"></a><a class="code" href="classMaxPacketInsertPolicy.html#519cee157016f1204c3a7115d43c1f4e">00190</a> <span class="keywordtype">bool</span> can_add(<span class="keywordtype">int</span> size, <span class="keyword">const</span> RowT& object)<span class="keyword"> const</span>
<a name="l00191"></a>00191 <span class="keyword"> </span>{
<a name="l00192"></a>00192 <span class="keywordflow">if</span> (size < size_) {
<a name="l00193"></a>00193 <span class="comment">// Haven't hit size threshold yet, so see if this next</span>
<a name="l00194"></a>00194 <span class="comment">// item pushes it over the line.</span>
<a name="l00195"></a>00195 SQLStream s(conn_);
<a name="l00196"></a>00196 s << <span class="stringliteral">",("</span> << object.value_list() << <span class="stringliteral">")"</span>;
<a name="l00197"></a>00197 <span class="keywordflow">return</span> (size_ - size) >= static_cast<int>(s.str().size());
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 <span class="keywordflow">else</span> {
<a name="l00200"></a>00200 <span class="comment">// Already too much in query buffer!</span>
<a name="l00201"></a>00201 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204
<a name="l00206"></a><a class="code" href="classMaxPacketInsertPolicy.html#12b4378f273aa6c4a398ae3a254d2cfc">00206</a> <span class="keyword">typedef</span> AccessController access_controller;
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="keyword">private</span>:
<a name="l00209"></a>00209 Connection* conn_;
<a name="l00210"></a>00210 <span class="keywordtype">int</span> size_;
<a name="l00211"></a>00211 };
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="preprocessor">#endif // !defined(MYSQLPP_INSERTPOLICY_H)</span>
<a name="l00214"></a>00214 <span class="preprocessor"></span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on 10 Dec 2013 for MySQL++ by
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