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
8 from PLC.Parameter import Parameter
9 from PLC.Table import Row, Table
10 from PLC.Filter import Filter
14 Representation of a row in the messages table.
17 table_name = 'messages'
18 primary_key = 'message_id'
20 'message_id': Parameter(str, "Message identifier"),
21 'subject': Parameter(str, "Message summary", nullok = True),
22 'template': Parameter(str, "Message template", nullok = True),
23 'enabled': Parameter(bool, "Message is enabled"),
26 class Messages(Table):
28 Representation of row(s) from the messages table in the database.
31 def __init__(self, api, message_filter = None, columns = None, enabled = None):
32 Table.__init__(self, api, Message, columns)
34 sql = "SELECT %s from messages WHERE True" % \
35 ", ".join(self.columns)
37 if enabled is not None:
38 sql += " AND enabled IS %s" % enabled
40 if message_filter is not None:
41 if isinstance(message_filter, (list, tuple, set, int, long)):
42 message_filter = Filter(Message.fields, {'message_id': message_filter})
43 sql += " AND (%s) %s" % message_filter.sql(api, "OR")
44 elif isinstance(message_filter, dict):
45 message_filter = Filter(Message.fields, message_filter)
46 sql += " AND (%s) %s" % message_filter.sql(api, "AND")
48 raise PLCInvalidArgument, "Wrong message filter %r"%message_filter