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/*
* Program type: API
*
* Description:
* This program selects and updates an array type.
* Projected head count is displayed and updated for
* a set of projects.
* 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 <ibase.h>
#include <stdio.h>
#include "example.h"
char *sel_str =
"SELECT dept_no, quart_head_cnt FROM proj_dept_budget p \
WHERE fiscal_year = 1994 AND proj_id = 'VBASE' \
FOR UPDATE of quart_head_cnt";
char *upd_str =
"UPDATE proj_dept_budget SET quart_head_cnt = ? WHERE CURRENT OF S";
int main (int argc, char** argv)
{
long hcnt[4];
ISC_QUAD array_id;
ISC_ARRAY_DESC desc;
long len;
char dept_no[6];
isc_db_handle DB = NULL;
isc_tr_handle trans = NULL;
ISC_STATUS_ARRAY status;
short flag0 = 0, flag1 = 0;
isc_stmt_handle stmt = NULL;
isc_stmt_handle ustmt = NULL;
char * cursor = "S";
XSQLDA * osqlda, *isqlda;
long fetch_stat;
short i;
char empdb[128];
if (argc > 1)
strcpy(empdb, argv[1]);
else
strcpy(empdb, "employee.fdb");
if (isc_attach_database(status, 0, empdb, &DB, 0, NULL))
{
ERREXIT(status, 1)
}
if (isc_start_transaction(status, &trans, 1, &DB, 0, NULL))
{
ERREXIT(status, 1)
}
/*
* Set up the array description structure
*/
if (isc_array_lookup_bounds(status, &DB, &trans,
"PROJ_DEPT_BUDGET", "QUART_HEAD_CNT", &desc))
{
ERREXIT(status, 1)
}
/*
* Set-up the select statement.
*/
osqlda = (XSQLDA *) malloc(XSQLDA_LENGTH(2));
osqlda->sqln = 2;
osqlda->version = 1;
osqlda->sqlvar[0].sqldata = (char *) dept_no;
osqlda->sqlvar[0].sqltype = SQL_TEXT + 1;
osqlda->sqlvar[0].sqlind = &flag0;
osqlda->sqlvar[1].sqldata = (char *) &array_id;
osqlda->sqlvar[1].sqltype = SQL_ARRAY + 1;
osqlda->sqlvar[1].sqlind = &flag1;
isc_dsql_allocate_statement(status, &DB, &stmt);
isc_dsql_allocate_statement(status, &DB, &ustmt);
/* Prepare and execute query */
if (isc_dsql_prepare(status, &trans, &stmt, 0, sel_str, 1, osqlda))
{
ERREXIT(status, 1)
}
if (isc_dsql_execute(status, &trans, &stmt, 1, NULL))
{
ERREXIT(status, 1)
}
/* Needed for update current */
isc_dsql_set_cursor_name(status, &stmt, cursor, 0);
/*
* Set-up the update statement.
*/
isqlda = (XSQLDA *) malloc(XSQLDA_LENGTH(1));
isqlda->sqln = 1;
isqlda->version = 1;
/* Use describe_bind to set up input sqlda */
if (isc_dsql_prepare(status, &trans, &ustmt, 0, upd_str, 1, NULL))
{
ERREXIT(status, 1)
}
isc_dsql_describe_bind(status, &ustmt, 1, isqlda);
isqlda->sqlvar[0].sqldata = (char *) &array_id;
isqlda->sqlvar[0].sqlind = &flag1;
/*
* Fetch the head count for each department's 4 quarters;
* increase the head count by 1 for each quarter;
* and save the new head count.
*/
while ((fetch_stat = isc_dsql_fetch(status, &stmt, 1, osqlda)) == 0)
{
/* Get the current array values. */
if (!flag1)
{
len = sizeof(hcnt);;
if (isc_array_get_slice(status, &DB, &trans,
(ISC_QUAD *) &array_id,
(ISC_ARRAY_DESC *) &desc,
(void *) hcnt,
(long *) &len))
{ERREXIT (status, 1)}
dept_no [osqlda->sqlvar[0].sqllen] = '\0';
printf("Department #: %s\n\n", dept_no);
printf("\tCurrent counts: %ld %ld %ld %ld\n",
hcnt[0], hcnt[1], hcnt[2], hcnt[3]);
/* Add 1 to each count. */
for (i = 0; i < 4; i++)
hcnt[i] = hcnt[i] + 1;
/* Save new array values. */
if (isc_array_put_slice(status, &DB, &trans,
(ISC_QUAD *) &array_id,
(ISC_ARRAY_DESC *) &desc,
(void *) hcnt,
(long *) &len))
{ERREXIT (status, 1)}
/* Update the array handle. */
if (isc_dsql_execute(status, &trans, &ustmt, 1, isqlda))
{
ERREXIT(status, 1)
}
printf("\tNew counts : %ld %ld %ld %ld\n\n",
hcnt[0], hcnt[1], hcnt[2], hcnt[3]);
}
}
if (fetch_stat != 100L)
{
ERREXIT(status, 1)
}
isc_dsql_free_statement(status, &stmt, DSQL_close);
isc_dsql_free_statement(status, &ustmt, DSQL_close);
/* Do a rollback to keep from updating the sample db */
if (isc_rollback_transaction(status, &trans))
{
ERREXIT(status, 1)
}
if (isc_detach_database(status, &DB))
{
ERREXIT(status, 1)
}
free(osqlda);
free(isqlda);
return 0;
}
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