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/*
* Program type: API Interface
*
* Description:
* This program displays employee names and phone extensions.
*
* It allocates an output SQLDA, prepares and executes a statement,
* and loops fetching multiple rows.
*
* The SQLCODE returned by fetch is checked.
* The contents of this file are subject to the Interbase Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy
* of the License at http://www.Inprise.com/IPL.html
*
* Software distributed under the License is distributed on an
* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
* or implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code was created by Inprise Corporation
* and its predecessors. Portions created by Inprise Corporation are
* Copyright (C) Inprise Corporation.
*
* All Rights Reserved.
* Contributor(s): ______________________________________.
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ibase.h>
#include "example.h"
#define LASTLEN 20
#define FIRSTLEN 15
#define EXTLEN 4
/* This macro is used to declare structures representing SQL VARCHAR types */
#define SQL_VARCHAR(len) struct {short vary_length; char vary_string[(len)+1];}
int main (int argc, char** argv)
{
SQL_VARCHAR(LASTLEN) last_name;
SQL_VARCHAR(FIRSTLEN) first_name;
char phone_ext[EXTLEN + 2];
short flag0 = 0, flag1 = 0;
short flag2 = 0;
isc_stmt_handle stmt = NULL; /* statement handle */
isc_db_handle DB = NULL; /* database handle */
isc_tr_handle trans = NULL; /* transaction handle */
ISC_STATUS_ARRAY status; /* status vector */
XSQLDA * sqlda;
long fetch_stat;
char empdb[128];
char *sel_str =
"SELECT last_name, first_name, phone_ext FROM phone_list \
WHERE location = 'Monterey' ORDER BY last_name, first_name;";
if (argc > 1)
strcpy(empdb, argv[1]);
else
strcpy(empdb, "employee.fdb");
if (isc_attach_database(status, 0, empdb, &DB, 0, NULL))
isc_print_status(status);
if (isc_start_transaction(status, &trans, 1, &DB, 0, NULL))
{
ERREXIT(status, 1)
}
/* Allocate an output SQLDA. */
sqlda = (XSQLDA *) malloc(XSQLDA_LENGTH(3));
sqlda->sqln = 3;
sqlda->sqld = 3;
sqlda->version = 1;
/* Allocate a statement. */
if (isc_dsql_allocate_statement(status, &DB, &stmt))
{
ERREXIT(status, 1)
}
/* Prepare the statement. */
if (isc_dsql_prepare(status, &trans, &stmt, 0, sel_str, 1, sqlda))
{
ERREXIT(status, 1)
}
/*
* Although all three selected columns are of type varchar, the
* third field's type is changed and printed as type TEXT.
*/
sqlda->sqlvar[0].sqldata = (char *)&last_name;
sqlda->sqlvar[0].sqltype = SQL_VARYING + 1;
sqlda->sqlvar[0].sqlind = &flag0;
sqlda->sqlvar[1].sqldata = (char *)&first_name;
sqlda->sqlvar[1].sqltype = SQL_VARYING + 1;
sqlda->sqlvar[1].sqlind = &flag1;
sqlda->sqlvar[2].sqldata = (char *) phone_ext;
sqlda->sqlvar[2].sqltype = SQL_TEXT + 1;
sqlda->sqlvar[2].sqlind = &flag2;
printf("\n%-20s %-15s %-10s\n\n", "LAST NAME", "FIRST NAME", "EXTENSION");
/* Execute the statement. */
if (isc_dsql_execute(status, &trans, &stmt, 1, NULL))
{
ERREXIT(status, 1)
}
/*
* Fetch and print the records.
* Status is 100 after the last row is fetched.
*/
while ((fetch_stat = isc_dsql_fetch(status, &stmt, 1, sqlda)) == 0)
{
printf("%-20.*s ", last_name.vary_length, last_name.vary_string);
printf("%-15.*s ", first_name.vary_length, first_name.vary_string);
phone_ext[sqlda->sqlvar[2].sqllen] = '\0';
printf("%s\n", phone_ext);
}
if (fetch_stat != 100L)
{
ERREXIT(status, 1)
}
/* Free statement handle. */
if (isc_dsql_free_statement(status, &stmt, DSQL_close))
{
ERREXIT(status, 1)
}
if (isc_commit_transaction(status, &trans))
{
ERREXIT(status, 1)
}
if (isc_detach_database(status, &DB))
{
ERREXIT(status, 1)
}
free( sqlda);
return 0;
}
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