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- /*
- * Program type: API Interface
- *
- * Description:
- * This program creates a new database, given an SQL statement
- * string. The newly created database is accessed after its
- * creation, and a sample table is added.
- *
- * The SQLCODE is extracted from the status vector and is used
- * to check whether the database already exists.
- */
-
-
- #include <stdlib.h>
- #include <string.h>
- #include <stdio.h>
- #include "example.h"
- #include <ibase.h>
-
- int pr_error PROTO((long ISC_FAR *, char ISC_FAR *));
-
-
-
- static char ISC_FAR *create_tbl = "CREATE TABLE dbinfo (when_created DATE)";
- static char ISC_FAR *insert_date = "INSERT INTO dbinfo VALUES ('NOW')";
-
- int main (ARG(int, argc), ARG(char **, argv))
- ARGLIST(int argc)
- ARGLIST(char **argv)
- {
- isc_db_handle newdb = NULL; /* database handle */
- isc_tr_handle trans = NULL; /* transaction handle */
- long status[20]; /* status vector */
- long sqlcode; /* SQLCODE */
- char create_db[160]; /* 'create database' statement */
- char new_dbname[128];
-
- if (argc > 1)
- strcpy(new_dbname, argv[1]);
- else
- strcpy(new_dbname, "new.gdb");
-
- /*
- * Construct a 'create database' statement.
- * The database name could have been passed as a parameter.
- */
- sprintf(create_db, "CREATE DATABASE '%s'", new_dbname);
-
- /*
- * Create a new database.
- * The database handle is zero.
- */
-
- if (isc_dsql_execute_immediate(status, &newdb, &trans, 0, create_db, 1,
- NULL))
- {
- /* Extract SQLCODE from the status vector. */
- sqlcode = isc_sqlcode(status);
-
- /* Print a descriptive message based on the SQLCODE. */
- if (sqlcode == -902)
- {
- printf("\nDatabase already exists.\n");
- printf("Remove %s before running this program.\n\n", new_dbname);
- }
-
- /* In addition, print a standard error message. */
- if (pr_error(status, "create database"))
- return 1;
- }
-
- isc_commit_transaction(status, &trans);
- printf("Created database '%s'.\n\n", new_dbname);
-
- /*
- * Connect to the new database and create a sample table.
- */
-
- /* newdb will be set to null on success */
- isc_detach_database(status, &newdb);
-
- if (isc_attach_database(status, 0, new_dbname, &newdb, 0, NULL))
- if (pr_error(status, "attach database"))
- return 1;
-
-
- /* Create a sample table. */
- isc_start_transaction(status, &trans, 1, &newdb, 0, NULL);
- if (isc_dsql_execute_immediate(status, &newdb, &trans, 0, create_tbl, 1, NULL))
- if (pr_error(status, "create table"))
- return 1;
- isc_commit_transaction(status, &trans);
-
- /* Insert 1 row into the new table. */
- isc_start_transaction(status, &trans, 1, &newdb, 0, NULL);
- if (isc_dsql_execute_immediate(status, &newdb, &trans, 0, insert_date, 1, NULL))
- if (pr_error(status, "insert into"))
- return 1;
- isc_commit_transaction(status, &trans);
-
- printf("Successfully accessed the newly created database.\n\n");
-
- isc_detach_database(status, &newdb);
-
- return 0;
- }
-
- /*
- * Print the status, the SQLCODE, and exit.
- * Also, indicate which operation the error occured on.
- */
- int pr_error (ARG(long ISC_FAR *, status), ARG(char ISC_FAR *, operation))
- ARGLIST(long ISC_FAR * status)
- ARGLIST(char ISC_FAR * operation)
- {
- printf("[\n");
- printf("PROBLEM ON \"%s\".\n", operation);
-
- isc_print_status(status);
-
- printf("SQLCODE:%d\n", isc_sqlcode(status));
-
- printf("]\n");
-
- return 1;
- }
-