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/*
* Program type: API Interface
*
* Description:
* This program updates a blob data type.
* Project descriptions are added 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"
#define PROJLEN 5
#define BUFLEN 512
char * get_line (void);
static char *Proj_data[] =
{
"VBASE",
"Design a video data base management system for ",
"controlling on-demand video distribution.",
0,
"DGPII",
"Develop second generation digital pizza maker ",
"with flash-bake heating element and ",
"digital ingredient measuring system.",
0,
"GUIDE",
"Develop a prototype for the automobile version of ",
"the hand-held map browsing device.",
0,
"MAPDB",
"Port the map browsing database software to run ",
"on the automobile model.",
0,
"HWRII",
"Integrate the hand-writing recognition module into the ",
"universal language translator.",
0,
0
};
int Inp_ptr = 0;
int main (int argc, char** argv)
{
char proj_id[PROJLEN + 1];
char upd_stmt[BUFLEN + 1];
ISC_QUAD blob_id;
isc_blob_handle blob_handle = NULL;
isc_db_handle DB = NULL; /* database handle */
isc_tr_handle trans = NULL; /* transaction handle */
ISC_STATUS_ARRAY status; /* status vector */
XSQLDA * sqlda;
unsigned short len;
char * line;
int rec_cnt = 0;
char empdb[128];
if (argc > 1)
strcpy(empdb, argv[1]);
else
strcpy(empdb, "employee.fdb");
strcpy(upd_stmt, "UPDATE project SET proj_desc = ? WHERE proj_id = ?");
if (isc_attach_database(status, 0, empdb, &DB, 0, NULL))
isc_print_status(status);
/*
* Set-up the SQLDA for the update statement.
*/
sqlda = (XSQLDA *) malloc(XSQLDA_LENGTH(2));
sqlda->sqln = 2;
sqlda->sqld = 2;
sqlda->version = 1;
sqlda->sqlvar[0].sqldata = (char *) &blob_id;
sqlda->sqlvar[0].sqltype = SQL_BLOB;
sqlda->sqlvar[0].sqllen = sizeof(ISC_QUAD);
sqlda->sqlvar[1].sqldata = proj_id;
sqlda->sqlvar[1].sqltype = SQL_TEXT;
sqlda->sqlvar[1].sqllen = 5;
if (isc_start_transaction(status, &trans, 1, &DB, 0, NULL))
isc_print_status(status);
/*
* Get the next project id and update the project description.
*/
line = get_line();
while (line)
{
strcpy(proj_id, line);
printf("\nUpdating description for project: %s\n\n", proj_id);
blob_handle = 0;
if (isc_create_blob(status, &DB, &trans, &blob_handle, &blob_id))
{
ERREXIT(status, 1)
}
line = get_line();
while (line)
{
printf(" Inserting segment: %s\n", line);
len = (unsigned short)strlen(line);
if (isc_put_segment(status, &blob_handle, len, line))
{
ERREXIT (status, 1)
}
line = get_line();
}
if (isc_close_blob(status, &blob_handle))
{
ERREXIT(status, 1)
}
if (isc_dsql_execute_immediate(status, &DB, &trans, 0, upd_stmt, 1,
sqlda))
{
ERREXIT (status, 1)
}
if (isc_sqlcode(status) == 0)
rec_cnt++;
else
printf("Input error -- no project record with key: %s\n", proj_id);
line = get_line();
}
if (isc_rollback_transaction (status, &trans))
{
ERREXIT(status, 1)
}
printf("\n\nAdded %d project descriptions.\n", rec_cnt);
if (isc_detach_database(status, &DB))
{
ERREXIT(status, 1)
}
free(sqlda);
return 0;
}
/*
* Get the next input line, which is either a project id
* or a project description segment.
*/
char *get_line (void)
{
return Proj_data[Inp_ptr++];
}
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