Sending a Parameterized SQL Using APH Defined Extension Elements
/*Copyright 2006, by Teradata Corporation. All rights reserved. */
/* Teradata PROPRIETARY AND CONFIDENTIAL-RESTRICTED */
/* Sends a NON-APH datainfo and data parcel using dbcarea */
/* extension for a parameterized SQL */
/* This program makes use of pointer elements in Extension */
/* designed for APH support D8XIEP, D8XIELEM */
/* Both 32-bit as well as 64-bit execuatbles can be generated */
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<coptypes.h>
#include<coperr.h>
#include<parcel.h>
#include <dbcarea.h>
#include <dbchqep.h>
DBCAREA dbcarea;
Int16 exitout(int n1);
Int16 dbc_con();
Int16 dbc_init();
Int16 dbc_irq(char *);
Int16 dbc_erq();
void set_options();
void act_count(Word );
Int16 fetch_request(long ,long);
void Setdbcareax();
unsigned int GetSegmentSize();
#define CONNECTED 0
#define NOT_CONNECTED 1
#define OK 0
#define STOP 1
#define FAILED -1
#define MAX_SESSIONS 1
char logon_str[] = "nag2n1/clitst,clitst";
char *logonstr=logon_str;
Int32 result;
char cnta[4];
char *psLogon;
struct ERROR_FAIL_Type {
Word StatementNo;
Word Info;
Word Code;
Word Length;
char Msg[255];
} *Error_Fail;
typedef struct
{
UInt16 FieldCount;
UInt16 Datatype;
UInt16 Length;
}DATAINFO;
#ifdef WIN32
__declspec(dllimport) char COPCLIVersion[];
__declspec(dllimport) char COPMTDPVersion[];
__declspec(dllimport) char COPMOSIosVersion[];
__declspec(dllimport) char COPMOSIDEPVersion[];
__declspec(dllimport) char OSERRVersion[];
#else
extern char COPCLIVersion[];
extern char COPMTDPVersion[];
extern char COPMOSIosVersion[];
extern char COPMOSIDEPVersion[];
extern char OSERRVersion[];
#endif
write_error(parcel)
char *parcel;
{ int i;
Error_Fail = ((struct ERROR_FAIL_Type *) (parcel));
printf("%d : ",Error_Fail->Code);
for(i=0;i < (int)Error_Fail->Length;i++)
printf("%c",Error_Fail->Msg[i]);
printf("\n");
return(0);
}
/******************************************************************
* function to initialize dbcarea *
******************************************************************/
Int16 dbc_init()
{
dbcarea.total_len = sizeof(struct DBCAREA);
DBCHINI(&result,cnta,&dbcarea);
if (result != EM_OK){
printf("\nError in initialization --%s",dbcarea.msg_text);
exitout(1);
}
return EM_OK;
}
/********************************************************************
* function to logon *
********************************************************************/
Int16 dbc_con()
{
printf("Logging on to :%s",psLogon);
dbcarea.logon_len=strlen(psLogon);
dbcarea.logon_ptr=psLogon;
dbcarea.func=DBFCON;
DBCHCL(&result,cnta,&dbcarea);
if (result != EM_OK)
{
printf("\nError in Logon--%s\n",dbcarea.msg_text);
exitout(1);
}
return EM_OK;
}
/*********************************************************************
* function to initiate request *
*********************************************************************/
Int16 dbc_irq(char *str)
{
dbcarea.func = DBFIRQ;
printf("\nSubmitting request :%s",str);
dbcarea.req_ptr = str;
dbcarea.req_len = strlen(str);
DBCHCL(&result,cnta,&dbcarea);
if (result != EM_OK){
printf("Error in Initiating a request--%s",dbcarea.msg_text);
exitout(1);
}
return EM_OK;
}
/*******************************************************************
* function to fetch parcels and check activity type *
*******************************************************************/
Int16 fetch_request(request,session)
long request,session;
{
int count,status,rowcount;
int ShowFlag=0;
char ctc[6400];
struct CliSuccessType *SuccPcl;
struct CliOkType *OKPcl;
dbcarea.i_sess_id=session;
dbcarea.i_req_id=request;
dbcarea.func = DBFFET;
status=OK;
printf("\n");
rowcount=1;
while (status == OK){
DBCHCL(&result,cnta,&dbcarea);
count=1;
if (result == REQEXHAUST) status = STOP;
else if (result != EM_OK) status = FAILED;
else {
switch (dbcarea.fet_parcel_flavor){
/*getch();*/
printf ("%d",dbcarea.fet_parcel_flavor);
case PclSUCCESS :
SuccPcl = (struct CliSuccessType *) dbcarea.fet_data_ptr;
act_count(SuccPcl->ActivityType);
break;
case PclOK :
OKPcl = (struct CliOkType *) dbcarea.fet_data_ptr;
act_count(OKPcl->ActivityType);
if (OKPcl->ActivityType==49)
ShowFlag=1;
else
ShowFlag=0;
break;
case PclFIELD :
break;
case PclRECORD : /*Returned data */
break;
case PclENDSTATEMENT:
break;
case PclENDREQUEST :
break;
case PclFAILURE :
printf("failure parcel PCLFAILURE\n,length %d \n",
(Int32)dbcarea.fet_ret_data_len); /*Failure parcel*/
break;
case PclERROR :
printf("PCLERROR"); /*Error parcel */
status = STOP;
write_error(dbcarea.fet_data_ptr);
exitout(CONNECTED);
break;
} /*end of switch*/
} /*end of else*/
} /*end of while*/
if(status == FAILED)
{ printf("fetch failed -- %s\n",dbcarea.msg_text);
exitout(CONNECTED);
} /*if*/
printf("\n");
return EM_OK;
}
Int16 dbc_erq()
{
dbcarea.i_sess_id = dbcarea.o_sess_id;
dbcarea.i_req_id = dbcarea.o_req_id;
dbcarea.func = DBFERQ;
DBCHCL(&result,cnta,&dbcarea);
if (result != EM_OK){
printf("Error in EndRequest--%s\n",dbcarea.msg_text);
exitout(1);
}
return EM_OK;
}
/*********************************************************************
* function to disconnect *
*********************************************************************/
Int16 exitout(int n)
{
dbcarea.func = DBFDSC;
DBCHCL(&result,cnta,&dbcarea);
DBCHCLN(&result,cnta);
printf("\nExiting--%s",dbcarea.msg_text);
exit(n);
return(n);
}
/*********************************************************************
* function to set options *
*********************************************************************/
void set_options()
{
dbcarea.change_opts = 'Y';
dbcarea.resp_mode = 'F';
dbcarea.use_presence_bits = 'N';
dbcarea.keep_resp = 'N';
dbcarea.wait_across_delay = 'N';
dbcarea.tell_about_delay = 'Y';
dbcarea.loc_mode = 'Y';
dbcarea.var_len_req = 'N';
dbcarea.var_len_fetch = 'N';
dbcarea.save_resp_buf = 'N';
dbcarea.two_resp_bufs = 'N';
dbcarea.ret_time = 'N';
dbcarea.parcel_mode='Y';
dbcarea.wait_for_resp = 'Y';
dbcarea.req_proc_opt = 'E';
dbcarea.req_buf_len = 1024;
dbcarea.resp_buf_len = 1024;
}
void act_count(Word Activitytype)
{
switch(Activitytype){
case PclDropTabStmt :
printf("\n-----------Table dropped--------------\n");
break;
case PclCTStmt:
printf("\n-----------Table Created--------------\n");
break;
case PclInsStmt :
printf("\n-------------Insert Successful--------\n");
break;
case PclRetStmt : printf("\n-------------Select Successful----------\n");
break;
default :
break;
}
return;
}
/********************************************************************
* Function : GetSegmentSize *
* Purpose : Gets maximum segment size from server *
********************************************************************/
unsigned int GetSegmentSize()
{
DBCHQEP QEPParms ;
unsigned int MaxSegSize;
memset( &QEPParms, 0, sizeof( QEPParms ) );
QEPParms.qepLevel = QEPLEVEL;
QEPParms.qepItem = QEPIDMSS ;
QEPParms.qepRALen = sizeof( long );
QEPParms.qepRArea = &MaxSegSize;
QEPParms.qepTDP = ( long ) ( "nag2n1" );
QEPParms.qepTLen = strlen("nag2n1");
DBCHQE( &result, cnta, &QEPParms );
MaxSegSize = *(unsigned int *) QEPParms.qepRArea;
printf(" MaxSegSize :%d", MaxSegSize);
return(MaxSegSize);
}
void Setdbcareax()
{
D8CAIRX *pExtArea;
D8XIEP *pElem;
D8XIELEM *pElem_Typ_and_Len;
void* memptr;
int* data;
DATAINFO* datainfo;
datainfo = malloc (sizeof(DATAINFO));
data = malloc(sizeof(data));
*data =1;
datainfo->FieldCount =1;
datainfo->Datatype =496;
datainfo->Length =4;
dbcarea.extension_pointer = malloc ( sizeof( D8CAIRX ) + (2 *( sizeof(D8XIELEM) + sizeof(D8XIEP) )));
pExtArea = (D8CAIRX *)dbcarea.extension_pointer;
memset( pExtArea, 0, sizeof( D8CAIRX ) +
(2 * (( sizeof (D8XIELEM) + sizeof(D8XIEP) ))) );
pExtArea->d8xiId[0] = 'I';
pExtArea->d8xiId[1] = 'R';
pExtArea->d8xiId[2] = 'X';
pExtArea->d8xiId[3] = '8';
pExtArea->d8xiSize = sizeof( D8CAIRX ) +(2 * (( sizeof (D8XIELEM) + sizeof(D8XIEP) ))) ;
pExtArea->d8xiLvl = 1;
/* next the data parcel */
memptr = (char *)(pExtArea + 1);
pElem_Typ_and_Len = (D8XIELEM *)memptr;
pElem_Typ_and_Len->d8xieLen = sizeof (D8XIELEM) + sizeof(D8XIEP);
pElem_Typ_and_Len->d8xieTyp = 0;
memptr = (char*)memptr + sizeof (D8XIELEM);
pElem = (D8XIEP *)memptr;
pElem->d8xiepF = PclDATAINFO; /* Flavor */
pElem->d8xiepLn = sizeof(DATAINFO);
pElem->d8xiepPt = datainfo;
memptr = (char*)memptr + sizeof (D8XIEP);
pElem_Typ_and_Len = (D8XIELEM *)memptr;
pElem_Typ_and_Len->d8xieLen = sizeof (D8XIELEM) + sizeof(D8XIEP);
pElem_Typ_and_Len->d8xieTyp = 0;
memptr = (char*)memptr + sizeof (D8XIELEM);
pElem = (D8XIEP *)memptr;
pElem->d8xiepF = PclDATA; /* Flavor */
pElem->d8xiepLn = sizeof(int);
pElem->d8xiepPt = data;
}
/*************************************************************
* main *
************************************************************/
main(int argc, char **argv)
{
char str0[]= "drop table samp";
char str1[] = "create table samp ( i int)";
char str2[] = "insert into samp (1)";
char str3[] = "select * from samp where i=?";
char psDefaultLogon[] = "dbc/systemfe,service";
psLogon = psDefaultLogon;
if (argc >= 2)
{
psLogon = argv[1];
}
if (psLogon == NULL)
{
psLogon = psDefaultLogon;
}
if (!strncmp(psLogon, "-h", 2))
{
printf ("clisamp logonstring(dbcname/username,password)\n");
exit(1);
}
printf("\nCLIv2 version is %s\n", COPCLIVersion);
printf("MTDP version is %s\n", COPMTDPVersion);
printf("MOSIOS version is %s\n", COPMOSIosVersion);
printf("MOSIDEP version is %s\n", COPMOSIDEPVersion);
printf("OSERR version is %s\n\n", OSERRVersion);
dbc_init();
set_options();
dbc_con();
fetch_request(dbcarea.o_req_id,dbcarea.o_sess_id);
dbc_erq();
dbc_irq(str0);
fetch_request(dbcarea.o_req_id,dbcarea.o_sess_id);
dbc_erq();
dbc_irq(str1);
fetch_request(dbcarea.o_req_id,dbcarea.o_sess_id);
dbc_erq();
dbcarea.extension_pointer=NULL;
dbcarea.dbriSeg='N';
dbc_irq(str2);
fetch_request(dbcarea.o_req_id,dbcarea.o_sess_id);
dbc_erq();
Setdbcareax();
dbc_irq(str3);
fetch_request(dbcarea.o_req_id,dbcarea.o_sess_id);
dbc_erq();
exitout(0);
}