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📁 ORACLE编程的好东西,纯C写的OCI封装.很好用,支持数据池.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>OCILIB (C Driver for Oracle): C:/Users/vincent/Data/Perso/dev/ocilib/ocilib/src/connection.c Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.4 --><div class="tabs">  <ul>    <li><a href="index.html"><span>Main&nbsp;Page</span></a></li>    <li><a href="modules.html"><span>Modules</span></a></li>    <li><a href="annotated.html"><span>Data&nbsp;Structures</span></a></li>    <li class="current"><a href="files.html"><span>Files</span></a></li>  </ul></div><h1>C:/Users/vincent/Data/Perso/dev/ocilib/ocilib/src/connection.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span><a name="l00002"></a>00002 <span class="comment">   +----------------------------------------------------------------------+   </span><a name="l00003"></a>00003 <span class="comment">   |                                                                      |</span><a name="l00004"></a>00004 <span class="comment">   |                     OCILIB - C Driver for Oracle                     |</span><a name="l00005"></a>00005 <span class="comment">   |                                                                      |</span><a name="l00006"></a>00006 <span class="comment">   |                      (C Wrapper for Oracle OCI)                      |</span><a name="l00007"></a>00007 <span class="comment">   |                                                                      |</span><a name="l00008"></a>00008 <span class="comment">   +----------------------------------------------------------------------+</span><a name="l00009"></a>00009 <span class="comment">   |                      Website : http://ocilib.net                     |</span><a name="l00010"></a>00010 <span class="comment">   +----------------------------------------------------------------------+</span><a name="l00011"></a>00011 <span class="comment">   |               Copyright (c) 2007-2008 Vincent ROGIER                 |</span><a name="l00012"></a>00012 <span class="comment">   +----------------------------------------------------------------------+</span><a name="l00013"></a>00013 <span class="comment">   | This library is free software; you can redistribute it and/or        |</span><a name="l00014"></a>00014 <span class="comment">   | modify it under the terms of the GNU Library General Public          |</span><a name="l00015"></a>00015 <span class="comment">   | License as published by the Free Software Foundation; either         |</span><a name="l00016"></a>00016 <span class="comment">   | version 2 of the License, or (at your option) any later version.     |</span><a name="l00017"></a>00017 <span class="comment">   |                                                                      |</span><a name="l00018"></a>00018 <span class="comment">   | This library is distributed in the hope that it will be useful,      |</span><a name="l00019"></a>00019 <span class="comment">   | but WITHOUT ANY WARRANTY; without even the implied warranty of       |</span><a name="l00020"></a>00020 <span class="comment">   | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU    |</span><a name="l00021"></a>00021 <span class="comment">   | Library General Public License for more details.                     |</span><a name="l00022"></a>00022 <span class="comment">   |                                                                      |</span><a name="l00023"></a>00023 <span class="comment">   | You should have received a copy of the GNU Library General Public    |</span><a name="l00024"></a>00024 <span class="comment">   | License along with this library; if not, write to the Free           |</span><a name="l00025"></a>00025 <span class="comment">   | Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.   |</span><a name="l00026"></a>00026 <span class="comment">   +----------------------------------------------------------------------+</span><a name="l00027"></a>00027 <span class="comment">   |          Author: Vincent ROGIER &lt;vince.rogier@gmail.com&gt;             |</span><a name="l00028"></a>00028 <span class="comment">   +----------------------------------------------------------------------+ </span><a name="l00029"></a>00029 <span class="comment">*/</span><a name="l00030"></a>00030 <a name="l00031"></a>00031 <span class="comment">/* ------------------------------------------------------------------------ *</span><a name="l00032"></a>00032 <span class="comment"> * $Id: connection.c, v 3.0.0 2008/10/09 09:54 Vince $</span><a name="l00033"></a>00033 <span class="comment"> * ------------------------------------------------------------------------ */</span><a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="preprocessor">#include "ocilib_internal.h"</span><a name="l00036"></a>00036 <a name="l00037"></a>00037 <a name="l00038"></a>00038 <span class="comment">/* ************************************************************************ *</span><a name="l00039"></a>00039 <span class="comment"> *                             PRIVATE FUNCTIONS</span><a name="l00040"></a>00040 <span class="comment"> * ************************************************************************ */</span><a name="l00041"></a>00041 <a name="l00042"></a>00042 <span class="comment">/* ------------------------------------------------------------------------ *</span><a name="l00043"></a>00043 <span class="comment"> * OCI_ConnectionAllocate</span><a name="l00044"></a>00044 <span class="comment"> * ------------------------------------------------------------------------ */</span><a name="l00045"></a>00045 <a name="l00046"></a>00046 <a class="code" href="struct_o_c_i___connection.html" title="Oracle physical connection.">OCI_Connection</a> * OCI_ConnectionAllocate(<a class="code" href="struct_o_c_i___conn_pool.html" title="Oracle Connection Pool.">OCI_ConnPool</a> *pool, <span class="keyword">const</span> mtext *db, <a name="l00047"></a>00047                                         <span class="keyword">const</span> mtext *user,  <span class="keyword">const</span> mtext *pwd, <a name="l00048"></a>00048                                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> mode)<a name="l00049"></a>00049 {<a name="l00050"></a>00050     <a class="code" href="struct_o_c_i___connection.html" title="Oracle physical connection.">OCI_Connection</a> *con = NULL;<a name="l00051"></a>00051     OCI_List *list      = NULL;<a name="l00052"></a>00052     OCI_Item *item      = NULL;<a name="l00053"></a>00053     <span class="keywordtype">boolean</span> res         = FALSE;<a name="l00054"></a>00054 <a name="l00055"></a>00055     <span class="comment">/* create connection object */</span><a name="l00056"></a>00056 <a name="l00057"></a>00057     <span class="keywordflow">if</span> (pool != NULL)<a name="l00058"></a>00058         list  = pool-&gt;<a class="code" href="struct_o_c_i___conn_pool.html#d3d8ff5a19eb253338f6951315c1f824">cons</a>;<a name="l00059"></a>00059     <span class="keywordflow">else</span><a name="l00060"></a>00060         list  = OCILib.cons;<a name="l00061"></a>00061 <a name="l00062"></a>00062     item = OCI_ListAppend(list, <span class="keyword">sizeof</span>(*con));<a name="l00063"></a>00063  <a name="l00064"></a>00064     <span class="keywordflow">if</span> (item != NULL)<a name="l00065"></a>00065     {<a name="l00066"></a>00066         res = TRUE;<a name="l00067"></a>00067 <a name="l00068"></a>00068         con = (<a class="code" href="struct_o_c_i___connection.html" title="Oracle physical connection.">OCI_Connection</a> *) item-&gt;data;<a name="l00069"></a>00069 <a name="l00070"></a>00070         <span class="comment">/* create internal lists */</span><a name="l00071"></a>00071 <a name="l00072"></a>00072         con-&gt;<a class="code" href="struct_o_c_i___connection.html#624935bfd26cde34ec0a2599e4362264">stmts</a> = OCI_ListCreate(OCI_IPC_STATEMENT);    <a name="l00073"></a>00073         <a name="l00074"></a>00074         <span class="keywordflow">if</span> (res == TRUE)<a name="l00075"></a>00075         {<a name="l00076"></a>00076             con-&gt;<a class="code" href="struct_o_c_i___connection.html#220b45c2fd519a7e20e7977490e04ee6">sobjs</a> = OCI_ListCreate(OCI_IPC_SCHEMA);    <a name="l00077"></a>00077             res = (con-&gt;<a class="code" href="struct_o_c_i___connection.html#220b45c2fd519a7e20e7977490e04ee6">sobjs</a> != NULL);<a name="l00078"></a>00078         }<a name="l00079"></a>00079 <a name="l00080"></a>00080         <span class="keywordflow">if</span> (res == TRUE)<a name="l00081"></a>00081         {<a name="l00082"></a>00082             con-&gt;<a class="code" href="struct_o_c_i___connection.html#9e86c1884cde18cf183ab6898054757f">trsns</a> = OCI_ListCreate(OCI_IPC_TRANSACTION);<a name="l00083"></a>00083             res = (con-&gt;<a class="code" href="struct_o_c_i___connection.html#220b45c2fd519a7e20e7977490e04ee6">sobjs</a> != NULL);<a name="l00084"></a>00084         }<a name="l00085"></a>00085  <a name="l00086"></a>00086         <span class="comment">/* set attributes */</span><a name="l00087"></a>00087 <a name="l00088"></a>00088         <span class="keywordflow">if</span> (res == TRUE)<a name="l00089"></a>00089         {<a name="l00090"></a>00090             con-&gt;<a class="code" href="struct_o_c_i___connection.html#642ca8589aad1bcb1578c536e0d2d7ae">mode</a> = mode;<a name="l00091"></a>00091             con-&gt;<a class="code" href="struct_o_c_i___connection.html#63a53de950b2cce15ff16958470d2c31">pool</a> = pool;<a name="l00092"></a>00092 <a name="l00093"></a>00093             <span class="keywordflow">if</span> (con-&gt;<a class="code" href="struct_o_c_i___connection.html#63a53de950b2cce15ff16958470d2c31">pool</a> != NULL)<a name="l00094"></a>00094             {<a name="l00095"></a>00095                 con-&gt;<a class="code" href="struct_o_c_i___connection.html#c8336afdd35c8b68b4d04c7881a22fa2">db</a>     = (mtext *) db;<a name="l00096"></a>00096                 con-&gt;<a class="code" href="struct_o_c_i___connection.html#50a2a86abeb957f56d76ae872b2bfe9d">user</a>   = (mtext *) user;<a name="l00097"></a>00097                 con-&gt;<a class="code" href="struct_o_c_i___connection.html#5ba3064a162ab1800c928d2805318872">pwd</a>    = (mtext *) pwd;<a name="l00098"></a>00098             }<a name="l00099"></a>00099             <span class="keywordflow">else</span><a name="l00100"></a>00100             {<a name="l00101"></a>00101                 con-&gt;<a class="code" href="struct_o_c_i___connection.html#c8336afdd35c8b68b4d04c7881a22fa2">db</a>   = mtsdup(db   != NULL ? db   : MT(<span class="stringliteral">""</span>));<a name="l00102"></a>00102                 con-&gt;<a class="code" href="struct_o_c_i___connection.html#50a2a86abeb957f56d76ae872b2bfe9d">user</a> = mtsdup(user != NULL ? user : MT(<span class="stringliteral">""</span>));<a name="l00103"></a>00103                 con-&gt;<a class="code" href="struct_o_c_i___connection.html#5ba3064a162ab1800c928d2805318872">pwd</a>  = mtsdup(pwd  != NULL ? pwd  : MT(<span class="stringliteral">""</span>));<a name="l00104"></a>00104             }<a name="l00105"></a>00105         }<a name="l00106"></a>00106 <a name="l00107"></a>00107         <span class="comment">/*  allocate error handle */</span><a name="l00108"></a>00108           <a name="l00109"></a>00109         <span class="keywordflow">if</span> (res == TRUE)<a name="l00110"></a>00110             res = (OCI_SUCCESS == OCI_HandleAlloc((dvoid *) OCILib.env, <a name="l00111"></a>00111                                                   (dvoid **) (<span class="keywordtype">void</span> *) &amp;con-&gt;<a class="code" href="struct_o_c_i___connection.html#573a359867139990b1b0f50aa7a86175">err</a>,<a name="l00112"></a>00112                                                   (ub4) OCI_HTYPE_ERROR, <a name="l00113"></a>00113                                                   (<span class="keywordtype">size_t</span>) 0, (dvoid **) NULL));<a name="l00114"></a>00114 <a name="l00115"></a>00115         <span class="comment">/* allocate server handle */</span><a name="l00116"></a>00116         <a name="l00117"></a>00117         <span class="keywordflow">if</span> (res == TRUE)<a name="l00118"></a>00118             res = (OCI_SUCCESS == OCI_HandleAlloc((dvoid *) OCILib.env, <a name="l00119"></a>00119                                                   (dvoid **) (<span class="keywordtype">void</span> *) &amp;con-&gt;<a class="code" href="struct_o_c_i___connection.html#5e5c78e07f642e570f44331b8e646b46">svr</a>,<a name="l00120"></a>00120                                                   (ub4) OCI_HTYPE_SERVER,<a name="l00121"></a>00121                                                   (<span class="keywordtype">size_t</span>) 0, (dvoid **) NULL));<a name="l00122"></a>00122 <a name="l00123"></a>00123         <span class="comment">/* allocate context handle */</span><a name="l00124"></a>00124         <a name="l00125"></a>00125         <span class="keywordflow">if</span> (res == TRUE)<a name="l00126"></a>00126             res = (OCI_SUCCESS == OCI_HandleAlloc((dvoid *) OCILib.env, <a name="l00127"></a>00127                                                   (dvoid **) (<span class="keywordtype">void</span> *) &amp;con-&gt;<a class="code" href="struct_o_c_i___connection.html#f20d1bea40e79481aeece933a4c70898">cxt</a>,<a name="l00128"></a>00128                                                   (ub4) OCI_HTYPE_SVCCTX, <a name="l00129"></a>00129                                                   (<span class="keywordtype">size_t</span>) 0, (dvoid **) NULL));<a name="l00130"></a>00130 <a name="l00131"></a>00131         <span class="comment">/* allocate session handle */</span><a name="l00132"></a>00132         <a name="l00133"></a>00133         <span class="keywordflow">if</span> (res == TRUE)<a name="l00134"></a>00134             res = (OCI_SUCCESS == OCI_HandleAlloc((dvoid *) OCILib.env,<a name="l00135"></a>00135                                                   (dvoid **) (<span class="keywordtype">void</span> *) &amp;con-&gt;<a class="code" href="struct_o_c_i___connection.html#09c8704dbf6d868165925c788ef3274e">ses</a>,

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