# Mark Huang <mlhuang@cs.princeton.edu>
# Copyright (C) 2006 The Trustees of Princeton University
#
-# $Id: NetworkMethods.py,v 1.2 2006/10/06 18:19:41 mlhuang Exp $
-#
from PLC.Faults import *
from PLC.Parameter import Parameter
table_name = 'network_methods'
primary_key = 'method'
+ join_tables = ['interfaces']
fields = {
'method': Parameter(str, "Network method", max = 20),
}
- def __init__(self, api, fields = {}):
- Row.__init__(self, fields)
- self.api = api
-
def validate_method(self, name):
- # Remove leading and trailing spaces
- name = name.strip()
+ # Make sure name is not blank
+ if not len(name):
+ raise PLCInvalidArgument("Network method must be specified")
- # Make sure name is not blank after we removed the spaces
- if not name:
- raise PLCInvalidArgument, "Network method must be specified"
-
- # Make sure network method does not alredy exist
- conflicts = NetworkMethods(self.api, [name])
+ # Make sure network method does not alredy exist
+ conflicts = NetworkMethods(self.api, [name])
if conflicts:
- raise PLCInvalidArgument, "Network method name already in use"
-
- return name
+ raise PLCInvalidArgument("Network method name already in use")
- def delete(self, commit = True):
- assert 'method' in self
+ return name
- # Clean up miscellaneous join tables
- for table in ['nodenetworks', 'network_methods']:
- self.api.db.do("DELETE FROM " + table + \
- " WHERE method = %(method)s",
- self)
-
- if commit:
- self.api.db.commit()
-
class NetworkMethods(Table):
"""
Representation of the network_methods table in the database.
"""
- def __init__(self, api, names = None):
+ def __init__(self, api, methods = None):
+ Table.__init__(self, api, NetworkMethod)
+
sql = "SELECT %s FROM network_methods" % \
", ".join(NetworkMethod.fields)
-
- if names:
- # Separate the list into integers and strings
- sql += " WHERE method IN (%s)" % ", ".join(api.db.quote(names))
- rows = api.db.selectall(sql)
+ if methods:
+ sql += " WHERE method IN (%s)" % ", ".join( [ api.db.quote (m) for m in methods ] )
- for row in rows:
- self[row['method']] = NetworkMethod(api, row)
+ self.selectall(sql)