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
8 from PLC.Faults import *
9 from PLC.Parameter import Parameter
10 from PLC.Storage.AlchemyObject import AlchemyObj
12 class KeyType(AlchemyObj):
14 Representation of a row in the key_types table. To use,
15 instantiate with a dict of values.
18 tablename = 'key_types'
20 'key_type': Parameter(str, "Key type", max = 20, primary_key=True),
23 def validate_key_type(self, name):
24 # Make sure name is not blank
26 raise PLCInvalidArgument, "Key type must be specified"
28 # Make sure key type does not alredy exist
29 conflicts = KeyType().select(filter={'key_type': name})
31 raise PLCInvalidArgument, "Key type name already in use"
35 def sync(self, commit = True, validate=True):
36 AlchemyObj.sync(self, commit=commit, validate=validate)
37 AlchemyObj.insert(self, dict(self))
39 def delete(self, commit=True):
41 Delete existing key type
43 assert 'key_type' in self
44 AlchemyObj.delete(self, filter={'key_type': self['key_type']})
48 Representation of the key_types table in the database.
51 def __init__(self, api, key_types = None):
53 key_types = KeyType().select(filter={'key_type': key_types})
55 key_types = KeyType().select()
57 for key_type in key_types:
58 key_type = KeyType(api, object=key_type)