Linux下使用C/C++访问数据库——Oracle之OCI篇
一、什么是OCI？
开发基于Oracle数据库的应用程序，我们可以选择多种工具，不仅可以用一般的数据库开发技术，诸如ADO（ActiveX Data Objects）、ODBC（Open DataBase Connectivity）等等，同时，也可以用Oracle公司提供的专门的开发工具，诸如Pro C_C++，OCI（Oracle Call Intedace）等等。比较这几种方式，前者因为是通用技术，开发起来比较容易，但是有一个致命的弱点就是诸如ADO之类的通用技术的速度太慢，如果我们要开发管理海量数据的数据库，比如影像数据库，那么，这种速度我们是不能忍受的。而OCI虽然开发起来难度大一些，但是它的速度极快，而且是一种底层接口，几乎可以操纵Oracle数据库的任何对象。
二、OCI简介
OCI(Oracle Call Intedace，即0racle调用层接口)是Oracle公司提供的由头文件和库函数等组成的一个访问Oracle数据库的应用程序编程接口（application programming interface API），它允许开发人员在第三代编程语言（包括C, C++, COBOL 与 FORTRAN）中通过SQL（Structure Query Language）来操纵Oracle数据库，而且OCI在一定程度上支持第三代编程语言（诸如C, C++, COBOL 与 FORTRAN）的数据类型、语法等等。OCI的显著特点是全面支持Oracle的面向对象技术，同时OCI还具有如下的一些特点：1)非常有利于应用程序的设计；2)高度控制应用程序的执行；3)允许开发人员应用已熟悉的第三代程序设计语言来应用OCI；4)支持动态SQL；5)几乎所有的Oracle的开发工具都支持OCI；6)通过回调技术（callbacks）来实现动态绑定与定义；7)通过OCI的描述函数可以获取Oracle数据库的各种参数；8)增强了数组在DML(data manipulation language)语言中的应用；OCI接口支持Windows NT和Windows 95／98/2000/XP操作系统，它所支持的C语言编译器包括Borland C++和MiroSoft VisualC++等。在使用0CI开发Oralce数据库应用程序之前，应首先安装这些操作系统和C语言编译工具。在选择安装OCI开发工具包后，Oracle安装程序将0CI文件拷贝到oracle主目录内的以下子目录中：..BIN\：执行文件和帮助文件：..\OCIINCLUDE头文件；
三、开发前的注意事项
首先，为了防止某些动态链接库出问题，建议在安装了Oracle客户端的机器上进行开发、运行。其次，使用OCI开发的程序，需要使用Oracle客户端的tnsnames.ora这个配置文件，所以在开发前需要使用netca来配置好相关内容。第三，Linux下的系统环境变量需要设置好。需要设置的环境变量包括ORACLE_HOME、ORACLE_SID、TNS_ADMIN，其中TNS_ADMIN指定到tnsnames.ora所在的文件夹。
四、程序开发：
还是直接用代码说话吧/*
* Common.h
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#ifndef COMMON_H_
#define COMMON_H_
#include <unistd.h>
#include <oci.h>
#include <ctype.h>
#include <string>
#include <iostream>
#include <vector>
#include <string.h>
using namespace std;
#endif /* COMMON_H_ */
/*
* Exception.h
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#ifndef EXCEPTION_H_
#define EXCEPTION_H_
class Exception
{
public:
Exception(int errno);
virtual char * GetErrMsg() = 0;
virtual char * GetErrFunc() = 0;
virtual int GetErrNo() = 0;
protected:
int m_iErrNo;
char m_sErrBuff[512];
char m_sErrFunc[128];
};
#endif /* EXCEPTION_H_ */
/*
* Exception.cpp
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#include "Exception.h"
Exception::Exception(int errno)
{
this ->m_iErrNo = errno;
this ->m_sErrBuff[0] = 0;
this ->m_sErrFunc[0] = 0;
}
/*
* OCIException.h
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#ifndef OCIEXCEPTION_H_
#define OCIEXCEPTION_H_
#include "Common.h"
#include "Exception.h"
class OCIException : public Exception
{
public:
OCIException(sb4 errno);
OCIException(sb4 errno, char * errfunc);
OCIException(sb4 errno, dvoid * erroci);
OCIException(sb4 errno, dvoid * erroci, char * errfunc);
char * GetErrMsg();
char * GetErrFunc();
int GetErrNo();
private:
void CheckError(sb4 errno);
void CheckError(sb4 errno, dvoid * erroci);
};
#endif /* OCIEXCEPTION_H_ */
/*
* OCIException.cpp
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#include "OCIException.h"
void OCIException::CheckError(sb4 errno)
{
text errBuff[512];
switch ( errno )
{
case OCI_SUCCESS:
break;
case OCI_SUCCESS_WITH_INFO:
sprintf( this ->m_sErrBuff, "OCI_SUCCESS_WITH_INFO" );
break;
case OCI_NEED_DATA:
sprintf( this ->m_sErrBuff, "OCI_NEED_DATA" );
break;
case OCI_NO_DATA:
sprintf( this ->m_sErrBuff, "OCI_NO_DATA" );
break;
case OCI_ERROR:
sprintf( this ->m_sErrBuff, "OCI_ERROR" );
break;
case OCI_INVALID_HANDLE:
sprintf( this ->m_sErrBuff, "OCI_INVALID_HANDLE" );
break;
case OCI_STILL_EXECUTING:
sprintf( this ->m_sErrBuff, "OCI_STILL_EXCUTING" );
break;
case OCI_CONTINUE:
sprintf( this ->m_sErrBuff, "OCI_CONTINUE" );
break;
default:
break;
}
}
void OCIException::CheckError(sb4 errno, dvoid * erroci)
{
text errBuff[512];
switch ( errno )
{
case OCI_SUCCESS:
break;
case OCI_SUCCESS_WITH_INFO:
sprintf( this ->m_sErrBuff, "OCI_SUCCESS_WITH_INFO" );
break;
case OCI_NEED_DATA:
sprintf( this ->m_sErrBuff, "OCI_NEED_DATA" );
break;
case OCI_NO_DATA:
sprintf( this ->m_sErrBuff, "OCI_NO_DATA" );
break;
case OCI_ERROR:
OCIErrorGet( (dvoid*)erroci, (ub4)1, (text*)NULL, &this ->m_iErrNo, errBuff, (ub4)sizeof(errBuff), OCI_HTYPE_ERROR);
sprintf( this ->m_sErrBuff, "%.*s", strlen((char*) errBuff) - 1, errBuff);
break;
case OCI_INVALID_HANDLE:
sprintf( this ->m_sErrBuff, "OCI_INVALID_HANDLE" );
break;
case OCI_STILL_EXECUTING:
sprintf( this ->m_sErrBuff, "OCI_STILL_EXCUTING" );
break;
case OCI_CONTINUE:
sprintf( this ->m_sErrBuff, "OCI_CONTINUE" );
break;
default:
break;
}
}
OCIException::OCIException(sb4 errno) : Exception( (int)errno )
{
this ->CheckError(errno);
}
OCIException::OCIException(sb4 errno, char * errfunc) : Exception( (int)errno )
{
strcpy( this ->m_sErrBuff, errfunc);
this ->CheckError(errno);
}
OCIException::OCIException(sb4 errno, dvoid * erroci) : Exception( (int)errno )
{
this ->CheckError(errno, erroci);
}
OCIException::OCIException(sb4 errno, dvoid * erroci, char * errfunc) : Exception( (int)errno )
{
strcpy( this ->m_sErrBuff, errfunc);
this ->CheckError(errno, erroci);
}
char * OCIException::GetErrMsg()
{
return this ->m_sErrBuff;
}
char * OCIException::GetErrFunc()
{
return this ->m_sErrFunc;
}
int OCIException::GetErrNo()
{
return this ->m_iErrNo;
}
/*
* OCIError.h
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#ifndef OCIERROR_H_
#define OCIERROR_H_
#include "Common.h"
class OCIError
{
public:
static void PrintError(int errno);
static void PrintError(int errno, char * errfunc);
private:
static void CheckError();
static int m_iErrNo;
static char m_sErrBuff[512];
static char m_sErrFunc[128];
};
#endif /* OCIERROR_H_ */
/*
* OCIError.cpp
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#include "OCIError.h"
int OCIError::m_iErrNo = 0;
char OCIError::m_sErrBuff[512] = {0};
char OCIError::m_sErrFunc[128] = {0};
void OCIError::CheckError()
{
switch ( OCIError::m_iErrNo )
{
case OCI_SUCCESS:
break;
case OCI_SUCCESS_WITH_INFO:
sprintf( OCIError::m_sErrBuff, "OCI_SUCCESS_WITH_INFO" );
break;
case OCI_NEED_DATA:
sprintf( OCIError::m_sErrBuff, "OCI_NEED_DATA" );
break;
case OCI_NO_DATA:
sprintf( OCIError::m_sErrBuff, "OCI_NO_DATA" );
break;
case OCI_ERROR:
sprintf( OCIError::m_sErrBuff, "OCI_ERROR" );
break;
case OCI_INVALID_HANDLE:
sprintf( OCIError::m_sErrBuff, "OCI_INVALID_HANDLE" );
break;
case OCI_STILL_EXECUTING:
sprintf( OCIError::m_sErrBuff, "OCI_STILL_EXCUTING" );
break;
case OCI_CONTINUE:
sprintf( OCIError::m_sErrBuff, "OCI_CONTINUE" );
break;
default:
break;
}
}
void OCIError::PrintError(int errno)
{
OCIError::m_iErrNo = errno;
OCIError::CheckError();
std::cout << OCIError::m_sErrBuff << std::endl;
}
void OCIError::PrintError(int errno, char * errfunc )
{
OCIError::m_iErrNo = errno;
strcpy(OCIError::m_sErrFunc, errfunc);
OCIError::CheckError();
std::cout << OCIError::m_sErrFunc << OCIError::m_sErrBuff << std::endl;
}
/*
* OCIDB.h
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#ifndef OCIDB_H_
#define OCIDB_H_
#include "Common.h"
#include "../Common/CheckStringTools.h"
#define MAX_VAR_LEN 10
#define MAX_BUFFER_SIZE 32767
typedef struct {
ub2 VarType;
char * VarName;
int VarLen;
union {
char * ValueChar;
float * ValueFloat;
int * ValueInt;
OCILobLocator *lobLocator;
};
} TBindVar;
typedef struct{
char VarName[MAX_VAR_LEN];
unsigned char VarType;
unsigned char VarSize;
unsigned char VarPrecision;
unsigned char VarScale;
unsigned char VarIsNull;
union {
char * ValueChar;
float * ValueFloat;
int * ValueInt;
OCILobLocator *lobLocator;
};
} TSelectVar;
#define MAX_BINDVAR_COUNT 10
#define MAX_SELECTVAR_COUNT 10
#define TYPE_INT 0
#define TYPE_FLOAT 1
#define TYPE_STRING 2
#define TYPE_BLOB 3
class OCIDB
{
private:
dvoid * indp;
OCIEnv * m_pOCIEnv;
OCIError * m_pOCIError;
OCISvcCtx * m_pOCISvcCtx;
OCIServer * m_pOCIServer;
OCISession * m_pOCISession;
OCIStmt * m_pOCIStmt;
OCIBind * m_pOCIBind;
OCIDefine * m_pOCIDefine;
OCIParam * m_pOCIParam;
TBindVar m_BindVars[MAX_BINDVAR_COUNT];
TSelectVar m_SelectVars[MAX_SELECTVAR_COUNT];
int m_iBindVarsCount;
int m_iSelectVarsCount;
char m_sUser[10];
char m_sPwd[10];
char m_sDBName[10];
int UserFetch();
int UserGetInt(int index);
int UserGetInt(char * name);
char * UserGetString(int index);
char * UserGetString(char * name);
char * UserGetBlob(int index);
char * UserGetBlob(char * name);
float UserGetFloat(int index);
float UserGetFloat(char * name);
void inline StrUpper(char *str);
bool inline StrCmp(const char *ori, const char *des);
vector< vector<string> > resultList;
protected:
char * getBlobValue();
public:
OCIDB();
~OCIDB();
/* Single User, Single Connection */
int Single_Conn();
void Single_Disc();
/* Multiple Sessions or Connections */
int Multiple_Conn();
void Multiple_Disc();
/* Execute SQL with none query */
int ExcuteSQL(char * sql);
/* Execute SQL with bind vars */
void BindInitVars();
void BindClearVars();
void BindAddVar(char * name, char * value);
void BindAddVar(char * name, int * value);
int BindSQL(char * sql);
/* Prepare SQL*/
int UserPrepare(char * sql);
int UserFree();
int UserBind(char * name, char * value);
int UserBind(char * name, int value);
int UserExecute();
int UserCommit();
int UserRollback();
int UserSelect(char * sql);
int UserSelectFree();
vector< vector<string> > getResult();
};
#endif /* OCIDB_H_ */
/*
* OCIDB.cpp
*
* Created .: Mar 1, 2009
* Author: Steven Wee
*/
#include "OCIDB.h"
#include "OCIException.h"
#include "OCIError.h"
OCIDB::OCIDB()
{
strcpy(this ->m_sUser, "webtest");
strcpy(this ->m_sPwd, "ns0528AO");
strcpy(this ->m_sDBName, "NSTEST");
this ->BindInitVars();
}
OCIDB::~OCIDB()
{
}
int OCIDB::Single_Conn()
{
try
{
sword errno;
/*
* OCIEnvCreate(&envhp, mode, (const dvoid *)0, 0, 0, 0, (size_t)0, (dvoid **)0 );
*/
errno = OCIEnvCreate( &this ->m_pOCIEnv, OCI_OBJECT, (dvoid *)0, (dvoid *(*)(dvoid *, size_t))0, (dvoid *(*)(dvoid *, dvoid *, size_t))0, (void (*)(dvoid *, dvoid *))0, (size_t)0, (dvoid **)0);
if(errno)
{
throw OCIException(errno, (char *)"OCIDB::Single_Conn OCIEnvCreate");
}
/* Create Error Handle */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCIError, OCI_HTYPE_ERROR, (size_t)0, (dvoid **)0);
if(errno)
{
throw OCIException(errno, (char *)"OCIDB::Single_Conn OCIHandleAlloc");
}
/* Login */
errno = OCILogon(this ->m_pOCIEnv, this ->m_pOCIError, &this ->m_pOCISvcCtx, (const OraText*)this ->m_sUser,
strlen(this ->m_sUser), (const OraText*)this ->m_sPwd, strlen(this ->m_sPwd), (const OraText*)this ->m_sDBName,
strlen(this ->m_sDBName));
if(errno)
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::Single_Conn OCILogin2");
}
return 0;
}
catch ( OCIException &ex)
{
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
void OCIDB::Single_Disc()
{
sword errno;
/* Log off */
errno = OCILogoff(m_pOCISvcCtx, this ->m_pOCIError);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Single_Disc OCILogoff");
}
/* Free errno */
errno = OCIHandleFree((dvoid *)this ->m_pOCIError, (ub4)OCI_HTYPE_ERROR);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Single_Disc OCIHandleFree");
}
/* Free Env Handle */
errno = OCIHandleFree((dvoid *)this ->m_pOCIEnv, (ub4)OCI_HTYPE_ENV);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Single_Disc OCIHandleFree");
}
}
int OCIDB::Multiple_Conn()
{
try
{
sword errno;
errno = OCIInitialize( (ub4)OCI_DEFAULT, (dvoid *)0, (dvoid *(*)(dvoid *, size_t))0, (dvoid *(*)(dvoid *, dvoid *, size_t))0, (void (*)(dvoid *, dvoid *))0 );
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIInitialize");
}
errno = OCIEnvInit( (OCIEnv **)&this ->m_pOCIEnv, OCI_DEFAULT, (size_t)0, (dvoid **)0);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIEnvInit");
}
/* Allocate Error Handle */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCIError, OCI_HTYPE_ERROR, (size_t)0, (dvoid **)0);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIHandleAlloc Error");
}
/* Allocate Server Context Handle */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCISvcCtx, OCI_HTYPE_SVCCTX, (size_t)0, (dvoid **)0);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIHandleAlloc SvcCtx");
}
/* Allocate Server Handle */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCIServer, OCI_HTYPE_SERVER, (size_t)0, (dvoid **)0);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIHandleAlloc Server");
}
/* Set Server into ServerContext */
errno = OCIAttrSet( (dvoid *)this ->m_pOCISvcCtx, OCI_HTYPE_SVCCTX, (dvoid *)this ->m_pOCIServer, 0, OCI_ATTR_SERVER, (OCIError *)this ->m_pOCIError);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIAttrSet Server");
}
/* Attach Server */
errno = OCIServerAttach(this ->m_pOCIServer, this ->m_pOCIError, (text *)this ->m_sDBName, strlen(this ->m_sDBName), OCI_DEFAULT);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIServerAttach");
}
/* Allocate Session Handle */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCISession, (ub4)OCI_HTYPE_SESSION, (size_t)0, (dvoid **)0);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIHandleAlloc Session");
}
/* Set Session into ServerContext */
errno = OCIAttrSet( (dvoid *)this ->m_pOCISvcCtx, (ub4)OCI_HTYPE_SVCCTX, (dvoid *)this ->m_pOCISession, (ub4)0, (ub4)OCI_ATTR_SESSION, (OCIError *)this ->m_pOCIError);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIAttrSet Session");
}
/* Set Session UserName */
errno = OCIAttrSet( (dvoid *)this ->m_pOCISession, OCI_HTYPE_SESSION, (dvoid *)this ->m_sUser, strlen(this ->m_sUser), OCI_ATTR_USERNAME, (OCIError *)this ->m_pOCIError);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIAttrSet UserName");
}
/* Set Session Password */
errno = OCIAttrSet( (dvoid *)this ->m_pOCISession, OCI_HTYPE_SESSION, (dvoid *)this ->m_sPwd, (ub4)strlen(this ->m_sPwd), (ub4)OCI_ATTR_PASSWORD, (OCIError *)this ->m_pOCIError);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::Multiple_Conn OCIAttrSet Password");
}
/* Session Begin */
errno = OCISessionBegin(this ->m_pOCISvcCtx, this ->m_pOCIError, this ->m_pOCISession, OCI_CRED_RDBMS, OCI_DEFAULT);
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::Multiple_Conn OCISessionBegin");
}
return 0;
}
catch (OCIException &ex)
{
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
void OCIDB::Multiple_Disc()
{
sword errno;
/* End Session */
errno = OCISessionEnd(this ->m_pOCISvcCtx, this ->m_pOCIError, this ->m_pOCISession, (ub4)OCI_DEFAULT);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Multiple_Disc OCISessionEnd");
}
/* Free Session */
errno = OCIHandleFree( (dvoid *)this ->m_pOCISession, (ub4)OCI_HTYPE_SESSION );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Multiple_Disc OCIHandleFree Session");
}
/* Detach Server */
errno = OCIServerDetach(this ->m_pOCIServer, this ->m_pOCIError, OCI_DEFAULT);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Multiple_Disc OCIServerDetach");
}
/* Free Server */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIServer, (ub4)OCI_HTYPE_SERVER );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Multiple_Disc OCIHandleFree Server");
}
/* Free ServerContext */
errno = OCIHandleFree( (dvoid *)this ->m_pOCISvcCtx, (ub4)OCI_HTYPE_SVCCTX );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Multiple_Disc OCIHandleFree ServerContext");
}
/* Free Error */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIError, (ub4)OCI_HTYPE_ERROR );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Multiple_Disc OCIHandleFree Error");
}
/* Free Env */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIEnv, (ub4)OCI_HTYPE_ENV );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::Multiple_Disc OCIHandleFree Env");
}
}
int OCIDB::ExcuteSQL(char * sql)
{
sword errno;
try
{
/* Allocate Stmt */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCIStmt, OCI_HTYPE_STMT, (size_t)0, (dvoid **)0);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::ExcuteSQL OCIHandleAlloc");
}
errno = OCIStmtPrepare(this ->m_pOCIStmt, this ->m_pOCIError, (const OraText *)sql, (ub4)strlen(sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::ExcuteSQL OCIStmtPrepare");
}
errno = OCIStmtExecute(this ->m_pOCISvcCtx, this ->m_pOCIStmt, this ->m_pOCIError, (ub4)1, (ub4)0, (const OCISnapshot *)NULL, (OCISnapshot *)NULL, OCI_DEFAULT);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::ExcuteSQL OCIStmtExecute");
}
errno = OCITransCommit( this ->m_pOCISvcCtx, this ->m_pOCIError, 0);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::ExcuteSQL OCITransCommit");
}
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::ExcuteSQL OCIHandleFree");
}
return 0;
}
catch (OCIException &ex)
{
/* Rollback */
errno = OCITransRollback( this ->m_pOCISvcCtx, this ->m_pOCIError, 0);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::ExcuteSQL OCITransRollback");
}
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::ExcuteSQL OCIHandleFree");
}
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
void OCIDB::BindInitVars()
{
int i;
for( i = 0 ; i < MAX_BINDVAR_COUNT - 1 ; i++ )
{
this ->m_BindVars[i].VarType = 0;
this ->m_BindVars[i].VarName = 0;
this ->m_BindVars[i].VarLen = 0;
this ->m_BindVars[i].ValueChar = 0;
}
this ->m_iBindVarsCount = 0;
}
void OCIDB::BindClearVars()
{
int i;
for( i = 0 ; i < m_iBindVarsCount - 1 ; i++ )
{
delete [] this ->m_BindVars[i].VarName;
if ( this ->m_BindVars[i].VarType == SQLT_STR )
delete [] this ->m_BindVars[i].ValueChar;
if ( this ->m_BindVars[i].VarType == SQLT_INT )
delete [] this ->m_BindVars[i].ValueInt;
this ->m_BindVars[i].VarType = 0;
this ->m_BindVars[i].VarName = 0;
this ->m_BindVars[i].VarLen = 0;
this ->m_BindVars[i].ValueChar = 0;
}
this ->m_iBindVarsCount = 0;
}
void OCIDB::BindAddVar(char * name, char * value)
{
if ( this ->m_iBindVarsCount >= MAX_BINDVAR_COUNT )
return;
this ->m_BindVars[this ->m_iBindVarsCount].VarType = SQLT_STR;
this ->m_BindVars[this ->m_iBindVarsCount].VarName = new char[strlen(name) + 1];
strcpy( this ->m_BindVars[this ->m_iBindVarsCount].VarName, name);
this ->m_BindVars[this ->m_iBindVarsCount].ValueChar = new char[strlen(value) + 1];
strcpy( this ->m_BindVars[this ->m_iBindVarsCount].ValueChar, value);
this ->m_BindVars[this ->m_iBindVarsCount].VarLen = strlen(value) + 1;
this ->m_iBindVarsCount++;
}
void OCIDB::BindAddVar(char * name, int * value)
{
if ( this ->m_iBindVarsCount >= MAX_BINDVAR_COUNT )
return;
this ->m_BindVars[this ->m_iBindVarsCount].VarType = SQLT_INT;
this ->m_BindVars[this ->m_iBindVarsCount].VarName = new char[strlen(name) + 1];
strcpy( this ->m_BindVars[this ->m_iBindVarsCount].VarName, name);
this ->m_BindVars[this ->m_iBindVarsCount].ValueInt = new int;
this ->m_BindVars[this ->m_iBindVarsCount].ValueInt = value;
this ->m_BindVars[this ->m_iBindVarsCount].VarLen = sizeof(int);
this ->m_iBindVarsCount++;
}
int OCIDB::BindSQL(char * sql)
{
if( this ->m_iBindVarsCount == 0 )
return -1;
sword errno;
try
{
/* Allocate Stmt */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCIStmt, OCI_HTYPE_STMT, (size_t)0, (dvoid **)0);
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::BindSQL OCIHandleAlloc Stmt");
}
/* Prepare Stmt */
errno = OCIStmtPrepare( this ->m_pOCIStmt, this ->m_pOCIError, (const OraText *)sql, (ub4)strlen(sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::BindSQL OCIStmtPrepare");
}
/* Bind Vars */
int i;
for ( i = 0 ; i < m_iBindVarsCount - 1 ; i++ )
{
/* Bind By Name */
errno = OCIBindByName( this ->m_pOCIStmt, &this ->m_pOCIBind, this ->m_pOCIError, (text *)this ->m_BindVars[i].VarName, -1,
(dvoid *)this ->m_BindVars[i].ValueChar, this ->m_BindVars[i].VarLen, this ->m_BindVars[i].VarType, (dvoid *)0, (ub2 *)0, (ub2 *)0, (ub4)0, (ub4 *)0, OCI_DEFAULT);
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::BindSQL OCIBindByName");
}
/*
errno = OCIBindByPos( this ->m_pOCIStmt, &this ->m_pOCIBind, this ->m_pOCIError, i + 1, (dvoid *)this ->m_BindVars[i].ValueChar,
this ->m_BindVars[i].VarLen, this ->m_BindVars[i].VarType, (dvoid *)0, (ub2 *)0, (ub2 *)0, (ub4)0, (ub4 *)0, OCI_DEFAULT);
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::BindSQL OCIBindByPos");
}
*/
}
/* Execute SQL */
errno = OCIStmtExecute( this ->m_pOCISvcCtx, this ->m_pOCIStmt, this ->m_pOCIError, (ub4)1, (ub4)0, (const OCISnapshot *)NULL, (OCISnapshot *)NULL, OCI_DEFAULT);
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::BindSQL OCIStmtExecute");
}
/* Commit */
errno = OCITransCommit( this ->m_pOCISvcCtx, this ->m_pOCIError, 0);
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::BindSQL OCITransCommit");
}
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::BindSQL OCIHandleFree");
}
/* Clear Vars */
this ->BindClearVars();
return 0;
}
catch ( OCIException &ex )
{
/* Rollback */
errno = OCITransRollback( this ->m_pOCISvcCtx, this ->m_pOCIError, 0);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::BindSQL OCITransRollback");
}
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::BindSQL OCIHandleFree");
}
this ->BindClearVars();
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
int OCIDB::UserPrepare(char * sql)
{
sword errno;
try
{
/* Allocate Stmt */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCIStmt, OCI_HTYPE_STMT, (size_t)0, (dvoid **)0 );
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::UserPrepare OCIHandleAlloc");
}
/* Prepare Stmt */
errno = OCIStmtPrepare( this ->m_pOCIStmt, this ->m_pOCIError, (const OraText *)sql, (ub4)strlen(sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, (char *)"OCIDB::UserPrepare OCIStmtPrepare");
}
return 0;
}
catch ( OCIException &ex )
{
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::UserPrepare Ex OCIHandleFree");
}
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
int OCIDB::UserFree()
{
sword errno;
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::UserFree OCIHandleFree");
return -1;
}
return 0;
}
int OCIDB::UserBind(char * name, char * value)
{
sword errno;
try
{
errno = OCIBindByName( this ->m_pOCIStmt, &this ->m_pOCIBind, this ->m_pOCIError, (text *)name, -1,
(dvoid *)value, strlen(value) + 1, SQLT_STR, (dvoid *)0, (ub2 *)0, (ub2 *)0, (ub4)0, (ub4 *)0, OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserBind OCIBindByName");
}
return 0;
}
catch ( OCIException &ex )
{
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::UserBind Ex OCIHandleFree");
}
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
int OCIDB::UserBind(char * name, int value)
{
sword errno;
try
{
int val = value;
errno = OCIBindByName( this ->m_pOCIStmt, &this ->m_pOCIBind, this ->m_pOCIError, (text *)name, -1,
(dvoid *)&val, sizeof(int), SQLT_INT, (dvoid *)0, (ub2 *)0, (ub2 *)0, (ub4)0, (ub4 *)0, OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserBind OCIBindByName");
}
return 0;
}
catch ( OCIException &ex )
{
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::UserBind Ex OCIHandleFree");
}
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
int OCIDB::UserExecute()
{
sword errno;
try
{
errno = OCIStmtExecute( this ->m_pOCISvcCtx, this ->m_pOCIStmt, this ->m_pOCIError, (ub4)1, (ub4)0,
(const OCISnapshot *)NULL, (OCISnapshot *)NULL, OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserExecute OCIBindByName");
}
return 0;
}
catch ( OCIException &ex )
{
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::UserExecute Ex OCIHandleFree");
}
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
int OCIDB::UserCommit()
{
sword errno;
errno = OCITransCommit( this ->m_pOCISvcCtx, this ->m_pOCIError, 0);
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::UserCommit OCITransCommit");
return -1;
}
return 0;
}
int OCIDB::UserSelect(char * sql)
{
sword errno;
try
{
/* Allocate Stmt */
errno = OCIHandleAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_pOCIStmt, OCI_HTYPE_STMT, (size_t)0, (dvoid **)0 );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIHandleAlloc");
}
/* Prepare Stmt */
errno = OCIStmtPrepare( this ->m_pOCIStmt, this ->m_pOCIError, (const OraText *)sql, (ub4)strlen(sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIStmtPrepare");
}
/* Execute Stmt */
errno = OCIStmtExecute( this ->m_pOCISvcCtx, this ->m_pOCIStmt, this ->m_pOCIError, (ub4)0, (ub4)0, (OCISnapshot *)NULL, (OCISnapshot *)NULL, OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIStmtExecute");
}
errno = OCIAttrGet( this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT, (dvoid *)&this ->m_iSelectVarsCount, (ub4 *)0, (ub4)OCI_ATTR_PARAM_COUNT, this ->m_pOCIError );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIAttrGet");
}
int iLen;
char * sName;
ub2 iSize, iPrecision, iType;
ub1 iScale, iIsNull;
int i;
for ( i = 0 ; i < this ->m_iSelectVarsCount ; i++ )
{
sName = 0;
errno = OCIParamGet( this ->m_pOCIStmt, OCI_HTYPE_STMT, this ->m_pOCIError, (dvoid **)&this ->m_pOCIParam, i+ 1 );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIParamGet");
}
// Column Name
errno = OCIAttrGet( (dvoid *)this ->m_pOCIParam, OCI_DTYPE_PARAM, (dvoid **)&sName, (ub4 *)&iLen, OCI_ATTR_NAME, this ->m_pOCIError );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIAttrGet Column Name");
}
strncpy( this ->m_SelectVars[i].VarName, sName, iLen );
this ->m_SelectVars[i].VarName[iLen] = 0;
// Data Size;
errno = OCIAttrGet( (dvoid *)this ->m_pOCIParam, OCI_DTYPE_PARAM, (dvoid *)&iSize, (ub4 *)0, OCI_ATTR_DATA_SIZE, this ->m_pOCIError );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIAttrGet Data Size");
}
this ->m_SelectVars[i].VarSize = iSize;
// Data Precision
errno = OCIAttrGet( (dvoid *)this ->m_pOCIParam, OCI_DTYPE_PARAM, (dvoid *)&iPrecision, (ub4 *)0, OCI_ATTR_PRECISION, this ->m_pOCIError );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIAttrGet Data Precision");
}
this ->m_SelectVars[i].VarPrecision = iPrecision;
// Data Scale
errno = OCIAttrGet( (dvoid *)this ->m_pOCIParam, OCI_DTYPE_PARAM, (dvoid *)&iScale, (ub4 *)0, OCI_ATTR_SCALE, this ->m_pOCIError );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIAttrGet Data Scale");
}
this ->m_SelectVars[i].VarScale = iScale;
// Data Is Null
errno = OCIAttrGet( (dvoid *)this ->m_pOCIParam, OCI_DTYPE_PARAM, (dvoid *)&iIsNull, (ub4 *)0, OCI_ATTR_IS_NULL, this ->m_pOCIError );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIAttrGet Data Is Null");
}
this ->m_SelectVars[i].VarIsNull = iIsNull;
// Data Type
errno = OCIAttrGet( (dvoid *)this ->m_pOCIParam, OCI_DTYPE_PARAM, (dvoid *)&iType, (ub4 *)0, OCI_ATTR_DATA_TYPE, this ->m_pOCIError );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIAttrGet Data Type");
}
this ->m_SelectVars[i].VarType = iType;
switch ( this ->m_SelectVars[i].VarType )
{
case SQLT_NUM:
if ( this ->m_SelectVars[i].VarScale == 0 )
{
this ->m_SelectVars[i].ValueInt = new int;
this ->m_SelectVars[i].VarType = TYPE_INT;
errno = OCIDefineByPos( this ->m_pOCIStmt, &this ->m_pOCIDefine, this ->m_pOCIError, i + 1,
(dvoid *)this ->m_SelectVars[i].ValueInt, sizeof(int), SQLT_INT, this ->indp, (ub2 *)0, (ub2 *)0, OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIDefineByPos");
}
}
else
{
this ->m_SelectVars[i].ValueFloat = new float;
this ->m_SelectVars[i].VarType = TYPE_FLOAT;
errno = OCIDefineByPos( this ->m_pOCIStmt, &this ->m_pOCIDefine, this ->m_pOCIError, i + 1,
(dvoid *)this ->m_SelectVars[i].ValueFloat, sizeof(float), SQLT_FLT, this ->indp, (ub2 *)0, (ub2 *)0, OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIDefineByPos");
}
}
break;
case SQLT_CHR:
this ->m_SelectVars[i].ValueChar = new char[this ->m_SelectVars[i].VarSize + 1];
this ->m_SelectVars[i].VarType = TYPE_STRING;
errno = OCIDefineByPos( this ->m_pOCIStmt, &this ->m_pOCIDefine, this ->m_pOCIError, i + 1,
(dvoid *)this ->m_SelectVars[i].ValueChar, this ->m_SelectVars[i].VarSize + 1, SQLT_STR, this ->indp, (ub2 *)0, (ub2 *)0, OCI_DEFAULT );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIDefineByPos");
}
break;
case SQLT_BLOB:
/* Allocate lobLocator */
errno = OCIDe.orAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_SelectVars[i].lobLocator, (ub4)OCI_DTYPE_LOB, (size_t)0, (dvoid **)0 );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIDe.orAlloc");
}
this ->m_SelectVars[i].VarType = TYPE_BLOB;
errno = OCIDefineByPos( this ->m_pOCIStmt, &this ->m_pOCIDefine, this ->m_pOCIError, (ub4)i + 1, (dvoid *)&this ->m_SelectVars[i].lobLocator, (sb4)0,
(ub2)SQLT_BLOB, this ->indp, (ub2 *)0, (ub2 *)0, (ub4)OCI_DEFAULT);
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIDefineByPos");
}
break;
case SQLT_CLOB:
/* Allocate lobLocator */
errno = OCIDe.orAlloc( (dvoid *)this ->m_pOCIEnv, (dvoid **)&this ->m_SelectVars[i].lobLocator, (ub4)OCI_DTYPE_LOB, (size_t)0, (dvoid **)0 );
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIDe.orAlloc");
}
this ->m_SelectVars[i].VarType = TYPE_BLOB;
errno = OCIDefineByPos( this ->m_pOCIStmt, &this ->m_pOCIDefine, this ->m_pOCIError, (ub4)i + 1, (dvoid *)&this ->m_SelectVars[i].lobLocator, (sb4)0,
(ub2)SQLT_BLOB, this ->indp, (ub2 *)0, (ub2 *)0, (ub4)OCI_DEFAULT);
if ( errno )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserSelect OCIDefineByPos");
}
break;
}
}
return 0;
}
catch ( OCIException &ex )
{
/* Free Stmt */
errno = OCIHandleFree( (dvoid *)this ->m_pOCIStmt, (ub4)OCI_HTYPE_STMT );
if ( errno )
{
OCIError::PrintError(errno, (char *)"OCIDB::UserExecute Ex OCIHandleFree");
}
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
int OCIDB::UserFetch()
{
sword errno;
try
{
errno = OCIStmtFetch( this ->m_pOCIStmt, this ->m_pOCIError, 1, OCI_FETCH_NEXT, OCI_DEFAULT );
if ( errno && errno != OCI_NO_DATA )
{
throw OCIException(errno, this ->m_pOCIError, (char *)"OCIDB::UserFetch OCIStmtFetch");
}
if ( errno == OCI_NO_DATA )
return 1;
return 0;
}
catch ( OCIException &ex )
{
std::cout << ex.GetErrFunc() << ex.GetErrMsg() << std::endl;
return -1;
}
}
int OCIDB::UserSelectFree()
{
int i;
for ( i = 0 ; i < this ->m_iSelectVarsCount ; i++ )
{
switch ( this ->m_SelectVars[i].VarType )
{
case TYPE_STRING:
delete [] this ->m_SelectVars[i].ValueChar;
break;
case TYPE_FLOAT:
delete this ->m_SelectVars[i].ValueFloat;
break;
case TYPE_INT:
delete this ->m_SelectVars[i].ValueInt;
break;
}
}
return this ->UserFree();
}
int OCIDB::UserGetInt(int index)
{
switch ( this ->m_SelectVars[index].VarType )
{
case TYPE_FLOAT:
return (int)*m_SelectVars[index].ValueFloat;
break;
case TYPE_INT:
return *m_SelectVars[index].ValueInt;
break;
default:
return 0;
}
}
int OCIDB::UserGetInt(char * name)
{
int i;
for ( i = 0 ; i < this ->m_iSelectVarsCount ; i++ )
{
if ( this ->StrCmp(m_SelectVars[i].VarName, name) )
{
switch ( this ->m_SelectVars[i].VarType )
{
case TYPE_FLOAT:
return (int)*m_SelectVars[i].ValueFloat;
break;
case TYPE_INT:
return *m_SelectVars[i].ValueInt;
break;
default:
return 0;
}
}
}
return 0;
}
float OCIDB::UserGetFloat(int index)
{
switch ( this ->m_SelectVars[index].VarType )
{
case TYPE_FLOAT:
return *m_SelectVars[index].ValueFloat;
break;
case TYPE_INT:
return (float)*m_SelectVars[index].ValueInt;
break;
default:
return 0;
}
}
float OCIDB::UserGetFloat(char * name)
{
int i;
for ( i = 0 ; i < this ->m_iSelectVarsCount ; i++ )
{
if ( this ->StrCmp(m_SelectVars[i].VarName, name) )
{
switch ( this ->m_SelectVars[i].VarType )
{
case TYPE_FLOAT:
return *m_SelectVars[i].ValueFloat;
break;
case TYPE_INT:
return (float)*m_SelectVars[i].ValueInt;
break;
default:
return 0;
}
}
}
return 0;
}
char * OCIDB::UserGetString(int index)
{
if ( this ->m_SelectVars[index].VarType == TYPE_STRING )
{
return this ->m_SelectVars[index].ValueChar;
}
else
{
return 0;
}
}
char * OCIDB::UserGetString(char * name)
{
int i;
for ( i = 0 ; i < this ->m_iSelectVarsCount ; i++ )
{
if ( this ->StrCmp(m_SelectVars[i].VarName, name) )
{
if ( this ->m_SelectVars[i].VarType == TYPE_STRING )
{
return this ->m_SelectVars[i].ValueChar;
}
}
}
return 0;
}
char * OCIDB::UserGetBlob(int index)
{
if ( this ->m_SelectVars[index].VarType == TYPE_BLOB )
{
return this ->m_SelectVars[index].ValueChar;
}
else
{
return 0;
}
}
char * OCIDB::UserGetBlob(char * name)
{
int i;
for ( i = 0 ; i < this ->m_iSelectVarsCount ; i++ )
{
if ( this ->StrCmp(m_SelectVars[i].VarName, name) )
{
if ( this ->m_SelectVars[i].VarType == TYPE_BLOB )
{
return this ->m_SelectVars[i].ValueChar;
}
}
}
return 0;
}
vector< vector<string> > OCIDB::getResult()
{
int i;
vector<string> objectValue;
StringTools stringTools;
while ( this ->UserFetch() == 0 )
{
objectValue.clear();
for ( i = 0 ; i < this ->m_iSelectVarsCount ; i++ )
{
switch ( this ->m_SelectVars[i].VarType )
{
case TYPE_STRING:
objectValue.push_back(this ->UserGetString(i));
break;
case TYPE_FLOAT:
objectValue.push_back(stringTools.ToString(this ->UserGetFloat(i)));
break;
case TYPE_INT:
objectValue.push_back(stringTools.ToString(this ->UserGetInt(i)));
break;
case TYPE_BLOB:
break;
}
}
resultList.push_back(objectValue);
}
return resultList;
}
void inline OCIDB::StrUpper(char * str)
{
int i;
int sLen = strlen(str);
for ( i = 0 ; i < sLen ; i++ )
{
str[i] = toupper(str[i]);
}
}
bool inline OCIDB::StrCmp(const char * ori, const char * des)
{
int iLenOri, iLenDes;
int j;
iLenOri = strlen(ori);
iLenDes = strlen(des);
if ( iLenOri != iLenDes )
return false;
for ( j = 0 ; j < iLenOri ; j++ )
{
if ( toupper(ori[j]) != toupper(des[j]) )
{
return false;
}
}
return true;
}
五、修改建议
本套代码只是处理了LOB类型的绑定，没有处理LOB类型数据的读取。本人在以后的完善中，打算把runSQLCommand(char * sql)函数分解成两个或者三个函数，分别执行select和insert等语句。在程序中，我并没有强制要求参数必须为const，可能会出现一些安全问题。本文仅起抛砖引玉的作用，希望有高手可以指点我程序中的问题。