Hi there,
I'm writing a database application in Java, which needs to get
notified about changes in the database. Therefore I'd like to use the
NOTIFY/LISTEN mechanism, but I can't get it working with JDBC. I
was told, to use connection.getWarnings() method to retrieve
notifications, which doesn't seem to work. I'm using PostgreSQL
6.5.1 with the JDBC-Driver 6.5 for jdk1.1, and the following code
doesn't produce any output, while a parallel running psql-shell
displays the notifications...
Connection c = DriverManager.getConnection(...); Statement s = c.createStatement(); s.execute("LISTEN
test");
while(true) { s.execute("NOTIFY test"); SQLWarning w = c.getWarnings(); if (w != null)
System.out.println(w.getMessage()); try { Thread.sleep(2000); } catch (InterruptedException ex) {}
}
Am I doing something wrong?
Thanks a lot for your help,
Martin Kresse
