Merge from trunk

[plcapi.git] / trunk / psycopg2 / examples / notify.py

diff --git a/trunk/psycopg2/examples/notify.py b/trunk/psycopg2/examples/notify.py
new file mode 100644 (file)
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--- /dev/null
+++ b/trunk/psycopg2/examples/notify.py
@@ -0,0 +1,43 @@
+# notify.py - example of getting notifies
+#
+# Copyright (C) 2001-2005 Federico Di Gregorio  <fog@debian.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+
+## put in DSN your DSN string
+
+DSN = 'dbname=test'
+
+## don't modify anything below tis line (except for experimenting)
+
+import sys
+import psycopg2
+import select
+
+if len(sys.argv) > 1:
+    DSN = sys.argv[1]
+
+print "Opening connection using dns:", DSN
+conn = psycopg2.connect(DSN)
+print "Encoding for this connection is", conn.encoding
+
+conn.set_isolation_level(0)
+curs = conn.cursor()
+
+curs.execute("listen test")
+
+print "Waiting for 'NOTIFY test'"
+while 1:
+    if select.select([curs],[],[],5)==([],[],[]):
+        print "Timeout"
+    else:
+        if curs.isready():
+            print "Got NOTIFY: %s" % str(curs.connection.notifies.pop())