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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <oci.h>
typedef struct {
OCIEnv *EnvHP;
OCIServer *SrvHP;
OCISvcCtx *SvcHP;
OCIError *ErrHP;
OCISession *SessionHP;
OCIStmt *StmtHP;
} MY_OCI_CONTEXT_T;
int oci_init(MY_OCI_CONTEXT_T* ociCtx_p);
static int select_data(MY_OCI_CONTEXT_T* ociCtx_p,int pid);
void oci_clean(MY_OCI_CONTEXT_T* ociCtx_p);
int main()
{
MY_OCI_CONTEXT_T ociCtx;
oci_init(&ociCtx);
select_data(&ociCtx,1110);
oci_clean(&ociCtx);
return 0;
}
int oci_init(MY_OCI_CONTEXT_T* ociCtx_p)
{
sword sr;
char tempstr[128];
sr=OCIEnvInit( (OCIEnv **) &ociCtx_p->EnvHP, OCI_DEFAULT, (size_t) 0,
(dvoid **) 0 );
sr=OCIEnvCreate(&ociCtx_p->EnvHP,OCI_DEFAULT,0,0,0,0,0,0);
if(sr!=OCI_SUCCESS)
{
return -1;
}
sr= OCIHandleAlloc( (dvoid *) ociCtx_p->EnvHP, (dvoid **) &ociCtx_p->ErrHP, OCI_HTYPE_ERROR,
(size_t) 0, (dvoid **) 0); /* server contexts */
if(sr!=OCI_SUCCESS)
{
return -1;
}
sr=OCIHandleAlloc( (dvoid *)ociCtx_p->EnvHP, (dvoid **) &ociCtx_p->SrvHP, OCI_HTYPE_SERVER,
(size_t) 0, (dvoid **) 0);
if(sr!=OCI_SUCCESS)
{
return -1;
}
sr=OCIHandleAlloc( (dvoid *)ociCtx_p->EnvHP, (dvoid **) &ociCtx_p->SvcHP, OCI_HTYPE_SVCCTX,
(size_t) 0, (dvoid **) 0);
if(sr!=OCI_SUCCESS)
{
return -1;
}
strcpy(tempstr,"ORCL");
printf("servername = %s\n",tempstr);
sr= OCIServerAttach(ociCtx_p->SrvHP,ociCtx_p->ErrHP, (text *)tempstr,
strlen(tempstr), 0);
if(sr!=OCI_SUCCESS)
{
return -1;
}
/* set attribute server context in the service context */
(void) OCIAttrSet( (dvoid *)ociCtx_p->SvcHP, OCI_HTYPE_SVCCTX, (dvoid *)ociCtx_p->SrvHP,
(ub4) 0, OCI_ATTR_SERVER, (OCIError *) ociCtx_p->ErrHP);
sr= OCIHandleAlloc((dvoid *)ociCtx_p->EnvHP, (dvoid **)&ociCtx_p->SessionHP,
(ub4) OCI_HTYPE_SESSION, (size_t) 0, (dvoid **) 0);
if(sr!=OCI_SUCCESS)
{
return -1;
}
strcpy(tempstr,"admin");
(void) OCIAttrSet((dvoid *)ociCtx_p->SessionHP, (ub4) OCI_HTYPE_SESSION,
(dvoid *)tempstr, (ub4) strlen((char *)tempstr),
(ub4) OCI_ATTR_USERNAME, ociCtx_p->ErrHP);
strcpy(tempstr,"admin");
printf("password = %s\n",tempstr);
(void) OCIAttrSet((dvoid *)ociCtx_p->SessionHP, (ub4) OCI_HTYPE_SESSION,
(dvoid *) tempstr, (ub4) strlen((char *)tempstr),
(ub4) OCI_ATTR_PASSWORD, ociCtx_p->ErrHP);
sr=OCISessionBegin (ociCtx_p->SvcHP, ociCtx_p->ErrHP, ociCtx_p->SessionHP, OCI_CRED_RDBMS,
(ub4) OCI_DEFAULT);
if(sr!=OCI_SUCCESS)
{
return -1;
}
(void) OCIAttrSet((dvoid *)ociCtx_p->SvcHP, (ub4) OCI_HTYPE_SVCCTX,
(dvoid *)ociCtx_p->SessionHP, (ub4) 0,
(ub4) OCI_ATTR_SESSION, ociCtx_p->ErrHP);
sr=OCIHandleAlloc( (dvoid *)ociCtx_p->EnvHP, (dvoid **) &ociCtx_p->StmtHP,
OCI_HTYPE_STMT, (size_t) 0, (dvoid **) 0);
if(sr!=OCI_SUCCESS)
{
return -1;
}
return 1;
}
static int select_data(MY_OCI_CONTEXT_T* ociCtx_p,int pid)
{
char sqlcmd[128]="";
sword retcode;
OCIDefine *defcolp[3];
sword indp[3];
int pointId;
char pointName[30];
char pointDesc[60];
sprintf(sqlcmd,"select c_point_id,c_point_name,C_POINT_DESC from t_point where c_point_id=%d",pid);
retcode = OCIStmtPrepare (ociCtx_p->StmtHP, ociCtx_p->ErrHP, (unsigned char *)sqlcmd,
(ub4)strlen((char *)sqlcmd),
(ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT
);
if(retcode!=OCI_SUCCESS)
{
printf("error OCIStmtPrepare \n");
}
retcode=OCIDefineByPos(ociCtx_p->StmtHP, &defcolp[0], ociCtx_p->ErrHP, (ub4)1, (dvoid *)&pointId,
(sb4)sizeof(int), SQLT_INT , (dvoid *)&indp[0], (ub2 *)0,
(ub2 *)0, (ub4) OCI_DEFAULT);
if(retcode!=OCI_SUCCESS)
{
printf("error OCIDefineByPos 0 \n");
}
retcode=OCIDefineByPos(ociCtx_p->StmtHP, &defcolp[1], ociCtx_p->ErrHP, (ub4)2, (dvoid *)pointName,
(sb4)sizeof(pointName),SQLT_CHR , (dvoid *)&indp[1], (ub2 *)0,
(ub2 *)0, (ub4) OCI_DEFAULT);
if(retcode!=OCI_SUCCESS)
{
printf("error OCIDefineByPos 1\n");
}
retcode=OCIDefineByPos(ociCtx_p->StmtHP, &defcolp[2], ociCtx_p->ErrHP, (ub4)3, (dvoid *)pointDesc,
(sb4)sizeof(pointDesc),SQLT_CHR , (dvoid *)&indp[2], (ub2 *)0,
(ub2 *)0, (ub4) OCI_DEFAULT);
if(retcode!=OCI_SUCCESS)
{
printf("error OCIDefineByPos 2\n");
}
retcode=OCIStmtExecute(ociCtx_p->SvcHP, ociCtx_p->StmtHP, ociCtx_p->ErrHP, (ub4) 1, (ub4) 0,
(CONST OCISnapshot *) NULL, (OCISnapshot *) NULL, OCI_DEFAULT );
if(retcode!=OCI_SUCCESS&&retcode!=OCI_NO_DATA)
{
printf("error OCIStmtExecute \n");
}
printf("tst---->pid %d ptName %s ptDesc %s\n",pointId,pointName,pointDesc);
return 1;
}
void oci_clean(MY_OCI_CONTEXT_T* ociCtx_p)
{
printf("\n ########## clean up ############ \n");
if (OCISessionEnd(ociCtx_p->SvcHP, ociCtx_p->ErrHP,
ociCtx_p->SessionHP, (ub4) 0))
printf("FAILED: OCISessionEnd()\n");
if (OCIServerDetach(ociCtx_p->SrvHP, ociCtx_p->ErrHP, (ub4) OCI_DEFAULT))
printf("FAILED: OCIServerDetach()\n");
printf("Detached from server.\n");
printf("Freeing handles ...\n");
if (ociCtx_p->StmtHP)
OCIHandleFree((dvoid *) ociCtx_p->StmtHP, (ub4) OCI_HTYPE_STMT);
if (ociCtx_p->ErrHP)
OCIHandleFree((dvoid *) ociCtx_p->ErrHP, (ub4) OCI_HTYPE_ERROR);
if (ociCtx_p->SrvHP)
OCIHandleFree((dvoid *) ociCtx_p->SrvHP, (ub4) OCI_HTYPE_SERVER);
if (ociCtx_p->SvcHP)
OCIHandleFree((dvoid *) ociCtx_p->SvcHP, (ub4) OCI_HTYPE_SVCCTX);
if (ociCtx_p->SessionHP)
OCIHandleFree((dvoid *) ociCtx_p->SessionHP, (ub4) OCI_HTYPE_SESSION);
if (ociCtx_p->EnvHP)
OCIHandleFree((dvoid *) ociCtx_p->EnvHP, (ub4) OCI_HTYPE_ENV);
}
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