Source Code for Module occi.core_model

  1  # coding=utf-8 
  2  # 
  3  # Copyright (C) 2010-2012 Platform Computing 
  4  # 
  5  # This library is free software; you can redistribute it and/or 
  6  # modify it under the terms of the GNU Lesser General Public 
  7  # License as published by the Free Software Foundation; either 
  8  # version 2.1 of the License, or (at your option) any later version. 
  9  # 
 10  # This library is distributed in the hope that it will be useful, 
 11  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
 12  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
 13  # Lesser General Public License for more details. 
 14  # 
 15  # You should have received a copy of the GNU Lesser General Public 
 16  # License along with this library; if not, write to the Free Software 
 17  # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA 
 18  # 
 19  ''' 
 20  OCCI's core model. 
 21   
 22  Created on Jun 27, 2011 
 23   
 24  @author: tmetsch 
 25  ''' 
 26   
 27  # disabling 'Too few public methods' pylint check (It's a model...) 
 28  # disabling 'Too many arguments' pylint check (It's more elegant this way...) 
 29  # pylint: disable=R0903, R0913 
 30   
 31  #============================================================================== 
 32  # Categories 
 33  #============================================================================== 
 34   
 35   
 36 -class Category(object): 
 37      ''' 
 38      OCCI Category. 
 39      ''' 
 40   
 41 -    def __init__(self, scheme, term, title, attributes, location): 
 42          self.scheme = scheme 
 43          self.term = term 
 44          self.title = title 
 45          self.attributes = attributes 
 46   
 47          # location 
 48          self.location = location 
 49          self.extras = None 
 50   
 51 -    def __eq__(self, instance): 
 52          if instance is None or not isinstance(instance, Category): 
 53              return False 
 54          if self.term == instance.term and self.scheme == instance.scheme \ 
 55              and self.extras == instance.extras: 
 56              return True 
 57          else: 
 58              return False 
 59   
 60 -    def __hash__(self): 
 61          return hash(self.scheme) ^ hash(self.term) ^ hash(str(self.extras)) 
 62   
 63 -    def __str__(self): 
 64          return self.scheme + self.term 
 65   
 66   
 67 -class Kind(Category): 
 68      ''' 
 69      OCCI Kind. 
 70      ''' 
 71   
 72 -    def __init__(self, scheme, term, related=None, actions=None, title='', 
 73                   attributes=None, location=None): 
 74          super(Kind, self).__init__(scheme, term, title, attributes or {}, 
 75                                     location or '/' + term + '/') 
 76          self.related = related or [] 
 77          self.actions = actions or [] 
 78   
 79 -    def __repr__(self): 
 80          return 'kind' 
 81   
 82   
 83 -class Action(Category): 
 84      ''' 
 85      OCCI Action. 
 86      ''' 
 87   
 88 -    def __init__(self, scheme, term, title='', attributes=None): 
 89          super(Action, self).__init__(scheme, term, title, attributes or {}, 
 90                                       location=None) 
 91   
 92 -    def __repr__(self): 
 93          return 'action' 
 94   
 95   
 96 -class Mixin(Category): 
 97      ''' 
 98      OCCI Mixin. 
 99      ''' 
100   
101 -    def __init__(self, scheme, term, related=None, actions=None, title='', 
102                   attributes=None, location=None): 
103          super(Mixin, self).__init__(scheme, term, title, attributes or {}, 
104                                      location or '/' + term + '/') 
105          self.related = related or [] 
106          self.actions = actions or [] 
107   
108 -    def __repr__(self): 
109          return 'mixin' 
110   
111   
112  #============================================================================== 
113  # Entities 
114  #============================================================================== 
115   
116   
117 -class Entity(object): 
118      ''' 
119      OCCI Entity. 
120      ''' 
121   
122 -    def __init__(self, identifier, title, kind, mixins): 
123          self.identifier = identifier 
124          self.title = title 
125          self.kind = kind 
126          self.mixins = mixins 
127   
128          # Attributes of resource entities 
129          self.attributes = {} 
130          self.actions = [] 
131          self.extras = None 
132   
133   
134 -class Resource(Entity): 
135      ''' 
136      OCCI Resource. 
137      ''' 
138   
139      kind = Kind('http://schemas.ogf.org/occi/core#', 'resource') 
140   
141 -    def __init__(self, identifier, kind, mixins, links=None, summary=None, 
142                   title=None): 
143          super(Resource, self).__init__(identifier, title, kind, mixins) 
144          self.links = links or [] 
145          self.summary = summary 
146   
147   
148 -class Link(Entity): 
149      ''' 
150      OCCI Link. 
151      ''' 
152   
153      kind = Kind('http://schemas.ogf.org/occi/core#', 'link') 
154   
155 -    def __init__(self, identifier, kind, mixins, source, target, title=None): 
156          super(Link, self).__init__(identifier, title, kind, mixins) 
157          self.source = source 
158          self.target = target 
159