2 # Functions for interacting with the key_types table in the database
4 # Mark Huang <mlhuang@cs.princeton.edu>
5 # Copyright (C) 2006 The Trustees of Princeton University
7 # $Id: KeyTypes.py,v 1.1 2006/10/10 20:24:06 mlhuang Exp $
10 from PLC.Faults import *
11 from PLC.Parameter import Parameter
12 from PLC.Table import Row, Table
16 Representation of a row in the key_types table. To use,
17 instantiate with a dict of values.
20 table_name = 'key_types'
21 primary_key = 'key_type'
23 'key_type': Parameter(str, "Key type", max = 20),
26 def __init__(self, api, fields = {}):
27 Row.__init__(self, fields)
30 def validate_key_type(self, name):
31 # Remove leading and trailing spaces
34 # Make sure name is not blank after we removed the spaces
36 raise PLCInvalidArgument, "Key type must be specified"
38 # Make sure key type does not alredy exist
39 conflicts = KeyTypes(self.api, [name])
41 raise PLCInvalidArgument, "Key type name already in use"
45 def delete(self, commit = True):
46 assert 'key_type' in self
48 # Clean up miscellaneous join tables
49 for table in ['keys', 'key_types']:
50 self.api.db.do("DELETE FROM " + table + \
51 " WHERE key_type = %(key_type)s",
57 class KeyTypes(Table):
59 Representation of the key_types table in the database.
62 def __init__(self, api, names = None):
63 sql = "SELECT %s FROM key_types" % \
64 ", ".join(KeyType.fields)
67 # Separate the list into integers and strings
68 sql += " WHERE key_type IN (%s)" % ", ".join(api.db.quote(names))
70 rows = api.db.selectall(sql)
73 self[row['key_type']] = KeyType(api, row)