Set connection parameters for a client connection

The following example shows one way to set default connection parameters. Assume that the system-default connection parameters are as follows.

The following code fragment uses DataBlade API functions to change the following default system values listed in the table.

extern void MI_PROC_CALLBACK all_callback();
MI_CONNECTION                     *conn;
MI_CONNECTION_INFO                     conn_info;
MI_DATABASE_INFO                     db_info;

/* Initialize DataBlade API */
mi_register_callback(conn, MI_Exception, all_callback,
   NULL, NULL);

/* Assign default connection parameter in the 
 * connection-information descriptor
 */
conn_info.server_name = "beth";
conn_info.server_port = 0;

/* Set default connection parameters for the application */
if ( mi_set_default_connection_info(&conn_info) == MI_ERROR )
      printf("FAILED: mi_set_default_connection_info()\n");

/* Assign default database parameters in the 
 * database-information descriptor
 */
db_info.user_name = "miadmin";
db_info.database_name = "template1";
db_info.password = NULL;

/* Set default database parameters for the application */
if ( mi_set_default_database_info(&db_info) == MI_ERROR )
      printf("FAILED: mi_set_default_database_info()\n");

/* Get default connection and database parameters for
 * application
 */
mi_get_default_connection_info(&conn_info);
mi_get_default_database_info(&db_info);

/* Make sure the right database server is set as the default */
if ( strcmp("beth", conn_info.server_name) != 0 )
   printf("FAILED: got server_name %s, should be beth\n",
      conn_info.server_name);

/* Connect to database server 'beth' */
conn = mi_server_connect(&conn_info);
if ( conn == NULL )
   printf("FAILED: CONNECT to beth\n");
else
   {
   printf("OK: connected to %s\n", conn_info.server_name);
}