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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.
- */
-
-
- #include <stdlib.h>
- #include <string.h>
- #include <ibase.h>
- #include <stdio.h>
- #include "example.h"
-
- #define PROJLEN 5
- #define BUFLEN 512
-
- char ISC_FAR* get_line PROTO((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 (ARG(int, argc), ARG(char **, argv))
- ARGLIST(int argc)
- ARGLIST(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 */
- long status[20]; /* status vector */
- XSQLDA ISC_FAR * sqlda;
- unsigned short len;
- char ISC_FAR* line;
- int rec_cnt = 0;
- char empdb[128];
-
- if (argc > 1)
- strcpy(empdb, argv[1]);
- else
- strcpy(empdb, "employee.gdb");
-
- 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 ISC_FAR *) malloc(XSQLDA_LENGTH(2));
- sqlda->sqln = 2;
- sqlda->sqld = 2;
- sqlda->version = 1;
-
- sqlda->sqlvar[0].sqldata = (char ISC_FAR *) &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 PROTO ((void))
- {
- return Proj_data[Inp_ptr++];
- }
-