# Mark Huang <mlhuang@cs.princeton.edu>
# Copyright (C) 2006 The Trustees of Princeton University
#
-# $Id: Roles.py,v 1.1 2006/09/06 15:36:07 mlhuang Exp $
+# $Id: Roles.py,v 1.7 2006/11/08 23:02:01 mlhuang Exp $
#
-class Roles(dict):
+from types import StringTypes
+from PLC.Faults import *
+from PLC.Parameter import Parameter
+from PLC.Filter import Filter
+from PLC.Table import Row, Table
+
+class Role(Row):
+ """
+ Representation of a row in the roles table. To use,
+ instantiate with a dict of values.
+ """
+
+ table_name = 'roles'
+ primary_key = 'role_id'
+ join_tables = ['person_role', ('slice_attribute_types', 'min_role_id')]
+ fields = {
+ 'role_id': Parameter(int, "Role identifier"),
+ 'name': Parameter(str, "Role", max = 100),
+ }
+
+ def validate_role_id(self, role_id):
+ # Make sure role does not already exist
+ conflicts = Roles(self.api, [role_id])
+ if conflicts:
+ raise PLCInvalidArgument, "Role ID already in use"
+
+ return role_id
+
+ def validate_name(self, name):
+ # Make sure name is not blank
+ if not len(name):
+ raise PLCInvalidArgument, "Role must be specified"
+
+ # Make sure role does not already exist
+ conflicts = Roles(self.api, [name])
+ if conflicts:
+ raise PLCInvalidArgument, "Role name already in use"
+
+ return name
+
+class Roles(Table):
"""
Representation of the roles table in the database.
"""
- # Role IDs equal to or lower than this number are for use by real
- # accounts. Other role IDs are used internally.
- role_max = 500
+ def __init__(self, api, role_filter = None):
+ Table.__init__(self, api, Role)
- def __init__(self, api):
- sql = "SELECT * FROM roles" \
- " WHERE role_id <= %d" % self.role_max
+ sql = "SELECT %s FROM roles WHERE True" % \
+ ", ".join(Role.fields)
+
+ if role_filter is not None:
+ if isinstance(role_filter, (list, tuple, set)):
+ # Separate the list into integers and strings
+ ints = filter(lambda x: isinstance(x, (int, long)), role_filter)
+ strs = filter(lambda x: isinstance(x, StringTypes), role_filter)
+ role_filter = Filter(Role.fields, {'role_id': ints, 'name': strs})
+ sql += " AND (%s)" % role_filter.sql(api, "OR")
+ elif isinstance(role_filter, dict):
+ role_filter = Filter(Role.fields, role_filter)
+ sql += " AND (%s)" % role_filter.sql(api, "AND")
- for row in api.db.selectall(sql):
- self[row['role_id']] = row['name']
- self[row['name']] = row['role_id']
+ self.selectall(sql)