EVENT WAIT
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Causes an application to wait until notified of an event occurrence. Available in gpre.
EVENT WAIT request_name;
| Argument | Description |
|---|---|
|
<request_name> |
Application event handle declared in a previous |
Description: EVENT WAIT is the second step in the InterBase two-part synchronous event mechanism. After a program registers interest in an event, EVENT WAIT causes the process running the application to sleep until the event of interest occurs.
Examples: The following embedded SQL statements register an application event name and indicate the program is ready to receive notification when the event occurs:
EXEC SQL
EVENT INIT ORDER_WAIT EMPDB ('new_order');
EXEC SQL
EVENT WAIT ORDER_WAIT;