2 # Functions for interacting with the network_types table in the database
4 # Mark Huang <mlhuang@cs.princeton.edu>
5 # Copyright (C) 2006 The Trustees of Princeton University
7 # $Id: NetworkTypes.py,v 1.2 2006/10/06 18:19:41 mlhuang Exp $
10 from PLC.Faults import *
11 from PLC.Parameter import Parameter
12 from PLC.Table import Row, Table
14 class NetworkType(Row):
16 Representation of a row in the network_types table. To use,
17 instantiate with a dict of values.
20 table_name = 'network_types'
23 'type': Parameter(str, "Network type", max = 20),
26 def __init__(self, api, fields = {}):
27 Row.__init__(self, fields)
30 def validate_type(self, name):
31 # Remove leading and trailing spaces
34 # Make sure name is not blank after we removed the spaces
36 raise PLCInvalidArgument, "Network type must be specified"
38 # Make sure network type does not alredy exist
39 conflicts = NetworkTypes(self.api, [name])
41 raise PLCInvalidArgument, "Network type name already in use"
45 def delete(self, commit = True):
48 # Clean up miscellaneous join tables
49 for table in ['nodenetworks', 'network_types']:
50 self.api.db.do("DELETE FROM " + table + \
51 " WHERE type = %(type)s",
57 class NetworkTypes(Table):
59 Representation of the network_types table in the database.
62 def __init__(self, api, names = None):
63 sql = "SELECT %s FROM network_types" % \
64 ", ".join(NetworkType.fields)
67 # Separate the list into integers and strings
68 sql += " WHERE type IN (%s)" % ", ".join(api.db.quote(names))
70 rows = api.db.selectall(sql)
73 self[row['type']] = NetworkType(api, row)