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libdtn-devel-2.6.0-2mdv2009.1.i586.rpm

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<h1>MysqlSQLImplementation.cc</h1><a href="MysqlSQLImplementation_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *    Copyright 2004-2006 Intel Corporation</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> *    Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00005"></a>00005 <span class="comment"> *    you may not use this file except in compliance with the License.</span>
<a name="l00006"></a>00006 <span class="comment"> *    You may obtain a copy of the License at</span>
<a name="l00007"></a>00007 <span class="comment"> * </span>
<a name="l00008"></a>00008 <span class="comment"> *        http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00009"></a>00009 <span class="comment"> * </span>
<a name="l00010"></a>00010 <span class="comment"> *    Unless required by applicable law or agreed to in writing, software</span>
<a name="l00011"></a>00011 <span class="comment"> *    distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00012"></a>00012 <span class="comment"> *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00013"></a>00013 <span class="comment"> *    See the License for the specific language governing permissions and</span>
<a name="l00014"></a>00014 <span class="comment"> *    limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment"> */</span>
<a name="l00016"></a>00016 
<a name="l00017"></a>00017 
<a name="l00018"></a>00018 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">#  include &lt;<a class="code" href="dtn-config_8h.html">dtn-config.h</a>&gt;</span>
<a name="l00020"></a>00020 <span class="preprocessor">#endif</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00022"></a>00022 <span class="preprocessor">#if MYSQL_ENABLED</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include &lt;oasys/debug/DebugUtils.h&gt;</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include &lt;oasys/debug/Log.h&gt;</span>
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="MysqlSQLImplementation_8h.html">MysqlSQLImplementation.h</a>"</span>
<a name="l00028"></a>00028 
<a name="l00029"></a>00029 <span class="keyword">namespace </span>dtn {
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <a class="code" href="classdtn_1_1MysqlSQLImplementation.html#3b95e1e37b1a90646689f06b65f733bd">MysqlSQLImplementation::MysqlSQLImplementation</a>()
<a name="l00032"></a>00032     : SQLImplementation(<span class="stringliteral">"BLOB"</span>, <span class="stringliteral">"BOOLEAN"</span>),
<a name="l00033"></a>00033       <a class="code" href="classoasys_1_1Logger.html">Logger</a>(<span class="stringliteral">"/storage/mysql"</span>)
<a name="l00034"></a>00034 {
<a name="l00035"></a>00035     query_result_ = NULL;
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037 
<a name="l00038"></a>00038 <span class="keywordtype">int</span>
<a name="l00039"></a>00039 MysqlSQLImplementation::connect(<span class="keyword">const</span> <span class="keywordtype">char</span>* dbName)
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041     db_ = mysql_init(NULL);
<a name="l00042"></a>00042 
<a name="l00043"></a>00043     log_debug(<span class="stringliteral">"connecting to database %s"</span>, dbName);
<a name="l00044"></a>00044  
<a name="l00045"></a>00045     <span class="comment">/* connect to database */</span>
<a name="l00046"></a>00046     <span class="keywordflow">if</span> (!mysql_real_connect(db_, NULL,
<a name="l00047"></a>00047                             NULL, NULL, dbName, 0, NULL, 0)) {
<a name="l00048"></a>00048         log_err(<span class="stringliteral">"error connecting to database %s: %s"</span>,
<a name="l00049"></a>00049                 dbName, mysql_error(db_));
<a name="l00050"></a>00050         <span class="keywordflow">return</span> -1;
<a name="l00051"></a>00051     }
<a name="l00052"></a>00052 
<a name="l00053"></a>00053     <span class="keywordflow">return</span> 0;
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055 
<a name="l00056"></a>00056 <span class="keyword">const</span> <span class="keywordtype">char</span>*
<a name="l00057"></a>00057 MysqlSQLImplementation::get_value(<span class="keywordtype">int</span> tuple_no, <span class="keywordtype">int</span> field_no)
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059     <span class="keyword">const</span> <span class="keywordtype">char</span>* ret;
<a name="l00060"></a>00060   
<a name="l00061"></a>00061     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(query_result_);
<a name="l00062"></a>00062     mysql_data_seek(query_result_, tuple_no);
<a name="l00063"></a>00063 
<a name="l00064"></a>00064     MYSQL_ROW r = mysql_fetch_row(query_result_);
<a name="l00065"></a>00065     ret = r[field_no];
<a name="l00066"></a>00066     <span class="keywordflow">return</span> ret;
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068 
<a name="l00069"></a>00069 <span class="comment">/*</span>
<a name="l00070"></a>00070 <span class="comment">size_t</span>
<a name="l00071"></a>00071 <span class="comment">MysqlSQLImplementation::get_value_length(int tuple_no, int field_no)</span>
<a name="l00072"></a>00072 <span class="comment">{</span>
<a name="l00073"></a>00073 <span class="comment">    unsigned long *lengths;</span>
<a name="l00074"></a>00074 <span class="comment">  </span>
<a name="l00075"></a>00075 <span class="comment">    ASSERT(query_result_);</span>
<a name="l00076"></a>00076 <span class="comment">    mysql_data_seek(query_result_, tuple_no);</span>
<a name="l00077"></a>00077 <span class="comment"></span>
<a name="l00078"></a>00078 <span class="comment">    mysql_fetch_row(query_result_);</span>
<a name="l00079"></a>00079 <span class="comment">    lengths = mysql_fetch_lengths(query_result_);</span>
<a name="l00080"></a>00080 <span class="comment">    return (size_t)lengths[field_no];</span>
<a name="l00081"></a>00081 <span class="comment">}</span>
<a name="l00082"></a>00082 <span class="comment">*/</span>
<a name="l00083"></a>00083 
<a name="l00084"></a>00084 <span class="keywordtype">int</span>
<a name="l00085"></a>00085 MysqlSQLImplementation::close()
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087     mysql_close(db_);
<a name="l00088"></a>00088     db_ = NULL;
<a name="l00089"></a>00089     <span class="keywordflow">return</span> 0;
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091 
<a name="l00092"></a>00092 <span class="keywordtype">bool</span>
<a name="l00093"></a>00093 MysqlSQLImplementation::has_table(<span class="keyword">const</span> <span class="keywordtype">char</span>* tablename)
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095     <span class="keywordtype">bool</span> ret = <span class="keyword">false</span>;
<a name="l00096"></a>00096  
<a name="l00097"></a>00097     <span class="keywordflow">if</span> (query_result_ != 0) {
<a name="l00098"></a>00098         mysql_free_result(query_result_);
<a name="l00099"></a>00099         query_result_ = 0;
<a name="l00100"></a>00100     }
<a name="l00101"></a>00101 
<a name="l00102"></a>00102     query_result_ = mysql_list_tables(db_, tablename);
<a name="l00103"></a>00103     
<a name="l00104"></a>00104     <span class="keywordflow">if</span> (mysql_num_rows(query_result_) == 1) {
<a name="l00105"></a>00105         ret = <span class="keyword">true</span>;
<a name="l00106"></a>00106     }
<a name="l00107"></a>00107     
<a name="l00108"></a>00108     mysql_free_result(query_result_);
<a name="l00109"></a>00109     query_result_ = NULL;
<a name="l00110"></a>00110 
<a name="l00111"></a>00111     <span class="keywordflow">return</span> ret;
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113 
<a name="l00114"></a>00114 <span class="keywordtype">int</span>
<a name="l00115"></a>00115 MysqlSQLImplementation::num_tuples()
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117     <span class="keywordtype">int</span> ret = -1;
<a name="l00118"></a>00118     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(query_result_);
<a name="l00119"></a>00119     ret = mysql_num_rows(query_result_);
<a name="l00120"></a>00120     <span class="keywordflow">return</span> ret;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 
<a name="l00123"></a>00123 <span class="keywordtype">int</span>
<a name="l00124"></a>00124 MysqlSQLImplementation::exec_query(<span class="keyword">const</span> <span class="keywordtype">char</span>* query)
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126     <span class="keywordtype">int</span> ret = -1;
<a name="l00127"></a>00127     
<a name="l00128"></a>00128     <span class="comment">// free previous result state</span>
<a name="l00129"></a>00129     <span class="keywordflow">if</span> (query_result_ != NULL) {
<a name="l00130"></a>00130         mysql_free_result(query_result_);
<a name="l00131"></a>00131         query_result_ = NULL;
<a name="l00132"></a>00132     }
<a name="l00133"></a>00133     
<a name="l00134"></a>00134     ret = mysql_query(db_, query);
<a name="l00135"></a>00135     
<a name="l00136"></a>00136     <span class="keywordflow">if</span> (ret == 1) {
<a name="l00137"></a>00137         <span class="keywordflow">return</span> ret;
<a name="l00138"></a>00138     }
<a name="l00139"></a>00139     
<a name="l00140"></a>00140     query_result_ = mysql_store_result(db_);
<a name="l00141"></a>00141     
<a name="l00142"></a>00142     <span class="keywordflow">return</span> ret;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 
<a name="l00145"></a>00145 <span class="keyword">const</span> <span class="keywordtype">char</span>* 
<a name="l00146"></a>00146 MysqlSQLImplementation::escape_string(<span class="keyword">const</span> <span class="keywordtype">char</span>* from) 
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148     <span class="keywordtype">int</span> length = strlen(from);
<a name="l00149"></a>00149     <span class="comment">// XXX/demmer fix memory leaks</span>
<a name="l00150"></a>00150     <span class="keywordtype">char</span>* to = (<span class="keywordtype">char</span> *) malloc(2*length+1);
<a name="l00151"></a>00151     mysql_real_escape_string(db_,to,from,length);
<a name="l00152"></a>00152 
<a name="l00153"></a>00153     <span class="keywordflow">return</span> to;
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155 
<a name="l00156"></a>00156 <span class="keyword">const</span> u_char* 
<a name="l00157"></a>00157 MysqlSQLImplementation::escape_binary(<span class="keyword">const</span> u_char* from, <span class="keywordtype">int</span> from_length) 
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159     <span class="keywordtype">int</span> length = from_length;
<a name="l00160"></a>00160     <span class="comment">// XXX/demmer fix memory leaks</span>
<a name="l00161"></a>00161     <span class="keywordtype">char</span>* to = (<span class="keywordtype">char</span> *) malloc(2*length+1);
<a name="l00162"></a>00162     mysql_real_escape_string(db_,to,(<span class="keyword">const</span> <span class="keywordtype">char</span>*)from,length);
<a name="l00163"></a>00163     <span class="keywordflow">return</span> (<span class="keyword">const</span> u_char*) to;
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165 
<a name="l00166"></a>00166 <span class="keyword">const</span> u_char* 
<a name="l00167"></a>00167 MysqlSQLImplementation::unescape_binary(<span class="keyword">const</span> u_char* from) 
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169     <span class="keywordflow">return</span> from; 
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 
<a name="l00172"></a>00172 } <span class="comment">// namespace dtn</span>
<a name="l00173"></a>00173 
<a name="l00174"></a>00174 <span class="preprocessor">#endif </span><span class="comment">/* MYSQL_ENABLED */</span>
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