Source Code for Module ZenRelations.RelSchema

 1  ########################################################################### 
 2  # 
 3  # This program is part of Zenoss Core, an open source monitoring platform. 
 4  # Copyright (C) 2007, Zenoss Inc. 
 5  # 
 6  # This program is free software; you can redistribute it and/or modify it 
 7  # under the terms of the GNU General Public License version 2 as published by 
 8  # the Free Software Foundation. 
 9  # 
10  # For complete information please visit: http://www.zenoss.com/oss/ 
11  # 
12  ########################################################################### 
13   
14  __doc__="""$Id: ToManyRelationship.py,v 1.48 2003/11/12 22:05:48 edahl Exp $""" 
15   
16  __version__ = "$Revision: 1.48 $"[11:-2] 
17   
18   
19  RELMETATYPES = ( 
20      'ToOneRelationship', 'ToManyContRelationship', 'ToManyRelationship') 
21   
22 -class RelSchema: 
23   
24 -    def __init__(self, remoteType, remoteClass, remoteName): 
25          self.remoteType = remoteType 
26          self.remoteClass = remoteClass 
27          self.remoteName = remoteName  
28       
29 -    def createRelation(self, name): 
30          return self._relationClass(name) 
31   
32 -    def checkType(self, relationship): 
33          """Check that a relationship instance is of correct type""" 
34          return isinstance(relationship, self._relationClass) 
35   
36   
37 -class ToOne(RelSchema): 
38      from ToOneRelationship import ToOneRelationship 
39      _relationClass = ToOneRelationship     
40   
41 -class ToMany(RelSchema): 
42      from ToManyRelationship import ToManyRelationship 
43      _relationClass = ToManyRelationship 
44   
45 -class ToManyCont(RelSchema): 
46      from ToManyContRelationship import ToManyContRelationship 
47      _relationClass = ToManyContRelationship 
48