2 # Functions for interacting with the messages table in the database
4 # Tony Mack <tmack@cs.princeton.edu>
5 # Copyright (C) 2006 The Trustees of Princeton University
7 # $Id: Messages.py,v 1.4 2006/11/16 17:03:36 mlhuang Exp $
10 from PLC.Parameter import Parameter
11 from PLC.Table import Row, Table
12 from PLC.Filter import Filter
16 Representation of a row in the messages table.
19 table_name = 'messages'
20 primary_key = 'message_id'
22 'message_id': Parameter(str, "Message identifier"),
23 'subject': Parameter(str, "Message summary", nullok = True),
24 'template': Parameter(str, "Message template", nullok = True),
25 'enabled': Parameter(bool, "Message is enabled"),
28 class Messages(Table):
30 Representation of row(s) from the messages table in the database.
33 def __init__(self, api, message_filter = None, columns = None, enabled = None):
34 Table.__init__(self, api, Message, columns)
36 sql = "SELECT %s from messages WHERE True" % \
37 ", ".join(self.columns)
39 if enabled is not None:
40 sql += " AND enabled IS %s" % enabled
42 if message_filter is not None:
43 if isinstance(message_filter, (list, tuple, set)):
44 message_filter = Filter(Message.fields, {'message_id': message_filter})
45 sql += " AND (%s)" % message_filter.sql(api, "OR")
46 elif isinstance(message_filter, dict):
47 message_filter = Filter(Message.fields, message_filter)
48 sql += " AND (%s)" % message_filter.sql(api, "AND")