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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/lob.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 Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="annotated.html"><span>Data 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/lob.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) 2007-2009 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 <vince.rogier@gmail.com> |</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: lob.c, v 3.2.0 2009/04/20 00:00 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 <span class="comment">/* ************************************************************************ *</span><a name="l00038"></a>00038 <span class="comment"> * PRIVATE FUNCTIONS</span><a name="l00039"></a>00039 <span class="comment"> * ************************************************************************ */</span><a name="l00040"></a>00040 <a name="l00041"></a>00041 <span class="comment">/* ------------------------------------------------------------------------ *</span><a name="l00042"></a>00042 <span class="comment"> * OCI_LobInit</span><a name="l00043"></a>00043 <span class="comment"> * ------------------------------------------------------------------------ */</span><a name="l00044"></a>00044 <a name="l00045"></a>00045 <a class="code" href="struct_o_c_i___lob.html" title="Oracle Internal Large objects:.">OCI_Lob</a> * OCI_LobInit(<a class="code" href="struct_o_c_i___connection.html" title="Oracle physical connection.">OCI_Connection</a> *con, <a class="code" href="struct_o_c_i___lob.html" title="Oracle Internal Large objects:.">OCI_Lob</a> **plob,<a name="l00046"></a>00046 OCILobLocator *handle, ub4 type)<a name="l00047"></a>00047 {<a name="l00048"></a>00048 ub2 csid = OCI_DEFAULT;<a name="l00049"></a>00049 ub1 csfrm = OCI_DEFAULT;<a name="l00050"></a>00050 <a class="code" href="struct_o_c_i___lob.html" title="Oracle Internal Large objects:.">OCI_Lob</a> * lob = NULL;<a name="l00051"></a>00051 <span class="keywordtype">boolean</span> res = TRUE;<a name="l00052"></a>00052 ub1 lobtype = 0;<a name="l00053"></a>00053 <a name="l00054"></a>00054 OCI_CHECK(plob == NULL, NULL);<a name="l00055"></a>00055 <a name="l00056"></a>00056 <span class="keywordflow">if</span> (*plob == NULL)<a name="l00057"></a>00057 *plob = (<a class="code" href="struct_o_c_i___lob.html" title="Oracle Internal Large objects:.">OCI_Lob</a> *) OCI_MemAlloc(OCI_IPC_LOB, <span class="keyword">sizeof</span>(*lob), 1, TRUE);<a name="l00058"></a>00058 <a name="l00059"></a>00059 <span class="keywordflow">if</span> (*plob != NULL)<a name="l00060"></a>00060 {<a name="l00061"></a>00061 lob = *plob;<a name="l00062"></a>00062 <a name="l00063"></a>00063 lob-><a class="code" href="struct_o_c_i___lob.html#f9e973d2ab2c1ec747e9e219f5ca7ba6">type</a> = type;<a name="l00064"></a>00064 lob-><a class="code" href="struct_o_c_i___lob.html#17646b1cc70c0c914ecb28849333fa65">con</a> = con;<a name="l00065"></a>00065 lob-><a class="code" href="struct_o_c_i___lob.html#bd1e86de291b7773f17282a1e9f79bd6">handle</a> = handle;<a name="l00066"></a>00066 lob-><a class="code" href="struct_o_c_i___lob.html#a2b896dd50cda4d2b8952deccacdc030">offset</a> = 1;<a name="l00067"></a>00067 <a name="l00068"></a>00068 <span class="keywordflow">if</span> (lob-><a class="code" href="struct_o_c_i___lob.html#bd1e86de291b7773f17282a1e9f79bd6">handle</a> == NULL)<a name="l00069"></a>00069 {<a name="l00070"></a>00070 ub4 empty = 0;<a name="l00071"></a>00071 <a name="l00072"></a>00072 <span class="comment">/* allocate handle for non fetched lob (temporary lob) */</span><a name="l00073"></a>00073 <a name="l00074"></a>00074 lob-><a class="code" href="struct_o_c_i___lob.html#ec698e0559c2ebc1ba332fe478612bdf">hstate</a> = OCI_OBJECT_ALLOCATED;<a name="l00075"></a>00075 <a name="l00076"></a>00076 <span class="keywordflow">if</span> (lob-><a class="code" href="struct_o_c_i___lob.html#f9e973d2ab2c1ec747e9e219f5ca7ba6">type</a> == OCI_NCLOB)<a name="l00077"></a>00077 {<a name="l00078"></a>00078 csfrm = SQLCS_NCHAR;<a name="l00079"></a>00079 lobtype = OCI_TEMP_CLOB;<a name="l00080"></a>00080 }<a name="l00081"></a>00081 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (lob-><a class="code" href="struct_o_c_i___lob.html#f9e973d2ab2c1ec747e9e219f5ca7ba6">type</a> == OCI_CLOB)<a name="l00082"></a>00082 {<a name="l00083"></a>00083 csfrm = SQLCS_IMPLICIT;<a name="l00084"></a>00084 lobtype = OCI_TEMP_CLOB;<a name="l00085"></a>00085 }<a name="l00086"></a>00086 <span class="keywordflow">else</span><a name="l00087"></a>00087 lobtype = OCI_TEMP_BLOB;<a name="l00088"></a>00088 <a name="l00089"></a>00089 res = (OCI_SUCCESS == OCI_DescriptorAlloc((dvoid *) OCILib.env,<a name="l00090"></a>00090 (dvoid **) (<span class="keywordtype">void</span> *) &lob-><a class="code" href="struct_o_c_i___lob.html#bd1e86de291b7773f17282a1e9f79bd6">handle</a>,<a name="l00091"></a>00091 (ub4) OCI_DTYPE_LOB, <a name="l00092"></a>00092 (<span class="keywordtype">size_t</span>) 0, (dvoid **) NULL));<a name="l00093"></a>00093 <a name="l00094"></a>00094 OCI_CALL2<a name="l00095"></a>00095 (<a name="l00096"></a>00096 res, lob-><a class="code" href="struct_o_c_i___lob.html#17646b1cc70c0c914ecb28849333fa65">con</a>, <a name="l00097"></a>00097 <a name="l00098"></a>00098 OCIAttrSet((dvoid *) lob-><a class="code" href="struct_o_c_i___lob.html#bd1e86de291b7773f17282a1e9f79bd6">handle</a>, (ub4) OCI_DTYPE_LOB,<a name="l00099"></a>00099 (dvoid *) &empty, (ub4) <span class="keyword">sizeof</span>(empty), <a name="l00100"></a>00100 (ub4) OCI_ATTR_LOBEMPTY, lob-><a class="code" href="struct_o_c_i___lob.html#17646b1cc70c0c914ecb28849333fa65">con</a>-><a class="code" href="struct_o_c_i___connection.html#573a359867139990b1b0f50aa7a86175">err</a>)<a name="l00101"></a>00101 )<a name="l00102"></a>00102 <a name="l00103"></a>00103 OCI_CALL2<a name="l00104"></a>00104 (<a name="l00105"></a>00105 res, lob->con, <a name="l00106"></a>00106 <a name="l00107"></a>00107 OCILobCreateTemporary(lob->con->cxt, lob->con->err,<a name="l00108"></a>00108 lob->handle, csid, csfrm, lobtype,<a name="l00109"></a>00109 FALSE, OCI_DURATION_SESSION)<a name="l00110"></a>00110 )<a name="l00111"></a>00111 <a name="l00112"></a>00112 }<a name="l00113"></a>00113 else<a name="l00114"></a>00114 lob->hstate = OCI_OBJECT_FETCHED_CLEAN;<a name="l00115"></a>00115 }<a name="l00116"></a>00116 else<a name="l00117"></a>00117 res = FALSE;<a name="l00118"></a>00118 <a name="l00119"></a>00119 <span class="comment">/* check for failure */</span><a name="l00120"></a>00120 <a name="l00121"></a>00121 if (res == FALSE)<a name="l00122"></a>00122 {<a name="l00123"></a>00123 <a class="code" href="group__g__lob.html#gac269a3de312c2c7d1a6193a9ab79545" title="Free a local temporary lob.">OCI_LobFree</a>(lob);<a name="l00124"></a>00124 lob = NULL;<a name="l00125"></a>00125 }<a name="l00126"></a>00126 <a name="l00127"></a>00127 <span class="keywordflow">return</span> lob;<a name="l00128"></a>00128 }<a name="l00129"></a>00129 <a name="l00130"></a>00130 <span class="comment">/* ************************************************************************ *</span><a name="l00131"></a>00131 <span class="comment"> * PUBLIC FUNCTIONS</span><a name="l00132"></a>00132 <span class="comment"> * ************************************************************************ */</span><a name="l00133"></a>00133 ⌨️ 快捷键说明
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