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441 lines
12 KiB
441 lines
12 KiB
/*=====================================================================================================================
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Copyright(c) 2012 ORIGIN.
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Unpublished - All rights reserved
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=======================================================================================================================
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File description:
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Filename: ocilib.cxx
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Module : OCI
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This file describes OCI library Package.
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=======================================================================================================================
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Date Name Description of Change
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1-Feb-2015 Ray li Initialize creation
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$HISTORY$
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=====================================================================================================================*/
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#define _CRT_SECURE_NO_WARNINGS
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#include "ocilib.h"
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#include <stdlib.h>
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#define NUM 100
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#define USERNAME "infodba"
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#define PASSWORD "infodba"
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#define DBNAME "tc"
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// 定义句柄结构
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typedef struct {
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OCIEnv* p_env; //OCI environment handle 环境句柄
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OCIError* p_err; //OCI error handle 错误句柄
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OCISvcCtx* p_svc; //OCI service context handel 服务上下文句柄
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OCIServer* p_ser; //OCI server handle 服务器句柄
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OCISession* p_usr; //OCI user session handle 用户会话句柄
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OCIStmt* p_sql; //OCI statement handle 语句句柄
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OCIDefine* p_dfn; //OCI define handle 定义句柄
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OCIBind* p_bnd; //OCI bind handle 绑定句柄
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}OCIHandleInfo;
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// 定义错误句柄结构
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typedef struct {
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OCIEnv* p_env;
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OCIError* p_err;
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OCISvcCtx* p_svc;
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OCIStmt* p_sql;
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OCIDefine* p_dfn;
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OCIBind* p_bnd;
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}OCIDATA;
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// 定义执行语句时候的输入参数
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typedef struct {
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char value[NUM][NUM];
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char type[NUM][NUM];
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}SqlField;
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// 定义查询语句时候的输入,输出参数
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typedef struct {
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int naIntValue[NUM];
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int nIntNum;
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char caCharValue[500][500];
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int nCharNum;
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}SqlSelField;
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OCIHandleInfo* ociHandle = NULL;
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OCIHandleInfo ociHand;
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int InitHandle();
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int _ExeSQL(char* SQL, char** inputValue, int inputValueCount);
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int _QuerySQL(char* SQL, SqlSelField* pOutField, SqlSelField* pSelField);
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int GetDataFromQuery(int* pRc, SqlSelField* pOutField);
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void QuitFreeHandle();
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/****************************************************************************************************************************************
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函数名称：
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函数功能：
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入口参数：
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出口参数：
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备 注：
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*****************************************************************************************************************************************/
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// 初始化Handler
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int InitHandle()
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{
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int swResult;
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ociHandle = &ociHand;
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/*create OCI environment*/
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if (swResult = OCIEnvCreate(&ociHandle->p_env, OCI_DEFAULT, NULL, NULL, NULL, NULL, 0, NULL)) //环境句柄
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{
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printf("environment create error!\n\n");
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return -1;
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}
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else
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{
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printf("environment create success!\n\n");
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//return 0;
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}
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/*init handle*/
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if (swResult = OCIHandleAlloc(ociHandle->p_env, (dvoid**)&ociHandle->p_ser, OCI_HTYPE_SERVER, 0, NULL)) //服务器句柄
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{
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printf("init server handle error!\n\n");
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return -1;
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}
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if (swResult = OCIHandleAlloc(ociHandle->p_env, (dvoid**)&ociHandle->p_err, OCI_HTYPE_ERROR, 0, NULL)) //错误句柄
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{
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printf("init error handle error!\n\n");
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return -1;
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}
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if (swResult = OCIHandleAlloc(ociHandle->p_env, (dvoid**)&ociHandle->p_usr, OCI_HTYPE_SESSION, 0, NULL)) //事务句柄
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{
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printf("init session handle error!\n\n");
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return -1;
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}
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if (swResult = OCIHandleAlloc(ociHandle->p_env, (dvoid**)&ociHandle->p_svc, OCI_HTYPE_SVCCTX, 0, NULL)) //上下文句柄
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{
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printf("init service context handle error!\n\n");
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return -1;
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}
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if (swResult = OCIHandleAlloc(ociHandle->p_env, (dvoid**)&ociHandle->p_sql, OCI_HTYPE_STMT, 0, NULL)) //SQL语句句柄
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{
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printf("init statement handle error!\n\n");
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return -1;
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}
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printf("init handle success!\n\n");
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return 0;
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}
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// 连接数据库服务器
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int ConnServer(char* username, char* password, char* dbname)
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{
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int swResult;
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char errbuf[100] = { 0 };
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int errcode;
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if (InitHandle() == -1)//初始化句柄
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return -1;
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if (swResult = OCILogon(ociHandle->p_env, ociHandle->p_err, &ociHandle->p_svc, (text*)username, strlen(username), (text*)password, strlen(password), (text*)dbname, strlen(dbname)))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("Error - %.*s/n", 512, errbuf);
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return -1;
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}
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else
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printf("数据库连接成功!\n\n");
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return 0;
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}
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// SQL语句的陈述(执行SQL语句)
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int _ExeSQL(char* SQL, char** inputValue, int inputValueCount)
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{
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int swResult, i;
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int errcode;
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//设置绑定变量
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OCIBind* p_bndp[100];
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//准备SQL语句
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if (swResult = OCIStmtPrepare(ociHandle->p_sql, ociHandle->p_err, (text*)SQL, strlen(SQL), OCI_NTV_SYNTAX, OCI_DEFAULT))
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{
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printf("prepare SQL statements error!\n\n");
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}
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else
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{
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printf("prepare SQL statements success!\n\n");
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}
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// 绑定输入变量
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for (i = 0; i < inputValueCount; i++)
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{
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char errbuf[100] = { 0 };
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if (swResult = OCIBindByPos(ociHandle->p_sql, &p_bndp[i], ociHandle->p_err, i + 1, (dvoid*)inputValue[i], (sb4)strlen(inputValue[i]) + 1, SQLT_STR, (dvoid*)0, (ub2*)0, (ub2*)0, (ub4)0, (ub4*)0, OCI_DEFAULT))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("Bind Error - %.*s/n", 512, errbuf);
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return -1;
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}
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}
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//执行SQL statements
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if (swResult = OCIStmtExecute(ociHandle->p_svc, ociHandle->p_sql, ociHandle->p_err, 1, 0, NULL, NULL, OCI_DEFAULT | OCI_COMMIT_ON_SUCCESS))
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{
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char errbuf[100] = { 0 };
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("execute SQL statement Error - %.*s\n", 512, errbuf);
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return -1;
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}
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else
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{
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printf("execute SQL statement success!\n\n");
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}
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return 0;
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}
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// 查询SQL
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int _QuerySQL(char* SQL, SqlSelField* pOutField, SqlSelField* pSelField)
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{
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sword status;
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int rc = 0, ret = 0;
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char errbuf[100] = { 0 };
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int maxNum = 2048;
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char chTag[8];
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int iIndex = 0;
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int outputColumn = 0;
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int errcode = 0;
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char nullValue = '\0'; //
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sb2 sb2aInd[30] = { '\0' };
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// 准备SQL语句
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status = OCIStmtPrepare(ociHandle->p_sql, ociHandle->p_err, (text*)SQL, (ub4)strlen(SQL), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT);
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if (status != OCI_SUCCESS)
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{
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printf("SQL Preparing failed/n");
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return -1;
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}
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// 绑定int类型的, 定义SQL语句时 :1,:2, 定义输入变量
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for (iIndex = 0; iIndex < pSelField->nIntNum; iIndex++)
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{
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memset(chTag, 0, 8);
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sprintf(chTag, ":%d", iIndex + 1);
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if (rc = OCIBindByName(ociHandle->p_sql, (OCIBind**)&ociHandle->p_dfn, ociHandle->p_err, (text*)chTag, (sb4)strlen((char*)chTag), (dvoid*)&pSelField->naIntValue[iIndex], sizeof(int), SQLT_INT, (dvoid*)0, (ub2*)0, (ub2*)0, (ub4)0, (ub4*)0, OCI_DEFAULT))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("BindByPos Error of ociHandle->p_sql - %.*s\n", 512, errbuf);
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return -1;
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}
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}
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// 绑定char *类型的, 定义SQL语句时 :3,:4, 定义输入变量
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for (iIndex = 0; iIndex < pSelField->nCharNum; iIndex++)
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{
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int n = 0;
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memset(chTag, 0, 8);
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n = pSelField->nIntNum + iIndex + 1;
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sprintf(chTag, ":%d", n);
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if (rc = OCIBindByName(ociHandle->p_sql, (OCIBind**)&ociHandle->p_dfn, ociHandle->p_err, (text*)chTag, (sb4)strlen((char*)chTag), (dvoid*)&pSelField->caCharValue[iIndex], NUM, SQLT_STR, (dvoid*)0, (ub2*)0, (ub2*)0, (ub4)0, (ub4*)0, OCI_DEFAULT))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("BindByPos Error of ociHandle->p_sql - %.*s\n", 512, errbuf);
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return -1;
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}
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}
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// 执行SQL语句
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if (rc = OCIStmtExecute(ociHandle->p_svc, ociHandle->p_sql, ociHandle->p_err, (ub4)0, (ub4)0, (CONST OCISnapshot*) NULL, (OCISnapshot*)NULL, OCI_STMT_SCROLLABLE_READONLY))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("execute SQL Error - %.*s\n", 512, errbuf);
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return -1;
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}
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else
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{
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printf("execute SQL success!\n\n");
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}
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if (ret = OCIAttrGet(ociHandle->p_sql, (ub4)OCI_HTYPE_STMT, (dvoid*)&outputColumn, (ub4*)0, (ub4)OCI_ATTR_PARAM_COUNT, ociHandle->p_err))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("Get OCIAttr Error of ociHandle->p_sql - %.*s\n", 512, errbuf);
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return -1;
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}
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// 绑定int类型的, 定义SQL语句时 :1,:2, 定义输出变量
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for (iIndex = 0; iIndex < pOutField->nIntNum; iIndex++)
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{
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if (rc = OCIDefineByPos(ociHandle->p_sql, &ociHandle->p_dfn, ociHandle->p_err, iIndex + 1, (dvoid*)&pOutField->naIntValue[iIndex], sizeof(int), SQLT_INT, (dvoid*)0, (ub2*)0, (ub2*)0, OCI_DEFAULT))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("DefineByPos Error of ociHandle->p_sql - %.*s\n", 512, errbuf);
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return -1;
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}
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}
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// 绑定char *类型的, 定义SQL语句时 :1,:2, 定义输出变量
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for (iIndex = 0; iIndex < outputColumn; iIndex++)
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{
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int n = iIndex + 1;
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if (rc = OCIDefineByPos(ociHandle->p_sql, &ociHandle->p_dfn, ociHandle->p_err, n, (dvoid*)&pOutField->caCharValue[iIndex], 1000 * sizeof(char), SQLT_STR, (dvoid*)0, (ub2*)0, (ub2*)0, OCI_DEFAULT))
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{
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OCIErrorGet((dvoid*)ociHandle->p_err, (ub4)1, (text*)NULL, &errcode, (ub1*)errbuf, (ub4)sizeof(errbuf), OCI_HTYPE_ERROR);
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printf("DefineByPos Error of ociHandle->p_sql - %.*s\n", 512, errbuf);
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return -1;
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}
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}
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return 0;
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}
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// 释放Handler
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void QuitFreeHandle()
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{
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// 退出服务器
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OCILogoff(ociHandle->p_svc, ociHandle->p_err);
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printf("Quit success!\n");
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// 释放句柄
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OCIHandleFree(ociHandle->p_ser, OCI_HTYPE_SERVER); //释放服务器句柄
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OCIHandleFree(ociHandle->p_err, OCI_HTYPE_ERROR); //释放错误句柄
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OCIHandleFree(ociHandle->p_usr, OCI_HTYPE_SESSION); //释放事务句柄
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OCIHandleFree(ociHandle->p_svc, OCI_HTYPE_SVCCTX); //释放上下文句柄
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OCIHandleFree(ociHandle->p_sql, OCI_HTYPE_STMT); //释放SQL语句句柄
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}
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// 执行类操作
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int ExecuteSQL(char* SQL, int valueCount, char** value)
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{
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int i = 0;
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if (i = _ExeSQL(SQL, value, valueCount))
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{
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QuitFreeHandle();
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return -1;
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}
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return 0;
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}
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// 有输入参数的查询
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int QuerySQL(char* SQL, int inputValueCount, char** inputValue, int* outputColumn, int* outputValueCount, char**** outputValue)
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{
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int i = 0, j = 0, ret = 0;
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int times = 0, temp = 0;
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SqlSelField infield;
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SqlSelField outField;
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// 初始化参数结构
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infield.nCharNum = inputValueCount;
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infield.nIntNum = 0;
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outField.nCharNum = 0;
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outField.nIntNum = 0;
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*outputColumn = 0;
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*outputValueCount = 0;
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for (i = 0; i < inputValueCount; i++)
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{
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strcpy(infield.caCharValue[i], inputValue[i]);
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}
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// 执行查询语句
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if (ret = _QuerySQL(SQL, &outField, &infield))
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{
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printf("SQL查询失败!\n");
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QuitFreeHandle();
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return -1;
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}
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// 获取结果列数
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ret = OCIAttrGet(ociHandle->p_sql, (ub4)OCI_HTYPE_STMT, (dvoid*)outputColumn, (ub4*)0, (ub4)OCI_ATTR_PARAM_COUNT, ociHandle->p_err);
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// 提取最后一行,便于去行数
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ret = OCIStmtFetch2(ociHandle->p_sql, ociHandle->p_err, 1, OCI_FETCH_LAST, 0, OCI_DEFAULT);
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// 获取结果行数
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ret = OCIAttrGet(ociHandle->p_sql, (ub4)OCI_HTYPE_STMT, (dvoid*)outputValueCount, (ub4*)0, (ub4)OCI_ATTR_ROW_COUNT, ociHandle->p_err);
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if (*outputValueCount == 0)
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return 0;
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// 开始分配内存并且存储
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ret = OCIStmtFetch2(ociHandle->p_sql, ociHandle->p_err, 1, OCI_FETCH_FIRST, 0, OCI_DEFAULT);
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*outputValue = (char***)calloc((*outputValueCount) + 1, sizeof(char**));
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do
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{
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(*outputValue)[i] = (char**)calloc((*outputColumn) + 1, sizeof(char*));
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for (j = 0; j < (*outputColumn); j++)
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{
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(*outputValue)[i][j] = (char*)calloc(1000, sizeof(char));
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strcpy((*outputValue)[i][j], outField.caCharValue[j]);
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//printf("outValue[%d][%d] = %s , 地址=%d, 所指向地址= %d\n ",i,j,(*outputValue)[i][j],&(*outputValue)[i][j],(*outputValue)[i][j]);
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}
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i++;
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} while ((ret = OCIStmtFetch2(ociHandle->p_sql, ociHandle->p_err, 1, OCI_FETCH_NEXT, 1, OCI_DEFAULT) != OCI_NO_DATA));
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return 0;
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}
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// 无输入参数的查询
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int QuerySQLNoInputParam(char* SQL, int* outputColumn, int* outputValueCount, char**** outputValue)
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{
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return QuerySQL(SQL, 0, NULL, outputColumn, outputValueCount, outputValue);
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}
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// 无参数操作
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int ExecuteSQLNoInputParam(char* SQL)
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{
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return ExecuteSQL(SQL, 0, NULL);
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}
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// 断开连接
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void DisConnServer()
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{
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if (ociHandle != NULL)
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QuitFreeHandle();
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}
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