2 # Functions for interacting with the roles 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.Filter import Filter
11 from PLC.Table import Row, Table
15 Representation of a row in the roles table. To use,
16 instantiate with a dict of values.
20 primary_key = 'role_id'
21 join_tables = ['person_role', 'tag_type_role' ]
23 'role_id': Parameter(int, "Role identifier"),
24 'name': Parameter(str, "Role", max = 100),
27 def validate_role_id(self, role_id):
28 # Make sure role does not already exist
29 conflicts = Roles(self.api, [role_id])
31 raise PLCInvalidArgument("Role ID already in use")
35 def validate_name(self, name):
36 # Make sure name is not blank
38 raise PLCInvalidArgument("Role must be specified")
40 # Make sure role does not already exist
41 conflicts = Roles(self.api, [name])
43 raise PLCInvalidArgument("Role name already in use")
49 Representation of the roles table in the database.
52 def __init__(self, api, role_filter = None):
53 Table.__init__(self, api, Role)
55 sql = "SELECT %s FROM roles WHERE True" % \
56 ", ".join(Role.fields)
58 if role_filter is not None:
59 if isinstance(role_filter, (list, tuple, set)):
60 # Separate the list into integers and strings
61 ints = [x for x in role_filter if isinstance(x, int)]
62 strs = [x for x in role_filter if isinstance(x, str)]
63 role_filter = Filter(Role.fields, {'role_id': ints, 'name': strs})
64 sql += " AND (%s) %s" % role_filter.sql(api, "OR")
65 elif isinstance(role_filter, dict):
66 role_filter = Filter(Role.fields, role_filter)
67 sql += " AND (%s) %s" % role_filter.sql(api, "AND")
68 elif isinstance(role_filter, int):
69 role_filter = Filter(Role.fields, {'role_id': role_filter})
70 sql += " AND (%s) %s" % role_filter.sql(api, "AND")
71 elif isinstance(role_filter, str):
72 role_filter = Filter(Role.fields, {'name': role_filter})
73 sql += " AND (%s) %s" % role_filter.sql(api, "AND")
75 raise PLCInvalidArgument("Wrong role filter %r"%role_filter)