annotate sat/memory/persistent.py @ 2734:9702025f6dff

core (memory/persistent): new LazyPersistentBinaryDict.remove method
author Goffi <goffi@goffi.org>
date Wed, 02 Jan 2019 18:24:14 +0100
parents e107089d6640
children 378188abe941
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
609
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _
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21 from sat.core.log import getLogger
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22 log = getLogger(__name__)
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23 from twisted.python import failure
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26 class MemoryNotInitializedError(Exception):
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27 pass
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29
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30 class PersistentDict(object):
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31 r"""A dictionary which save persistently each value assigned
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32
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33 /!\ be careful, each assignment means a database write
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34 /!\ Memory must be initialised before loading/setting value with instances of this class"""
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35 storage = None
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36 binary = False
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37
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38 def __init__(self, namespace, profile=None):
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39 """
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40
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41 @param namespace: unique namespace for this dictionary
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42 @param profile(unicode, None): profile which *MUST* exists, or None for general values
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43 """
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44 if not self.storage:
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45 log.error(_("PersistentDict can't be used before memory initialisation"))
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46 raise MemoryNotInitializedError
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47 self._cache = None
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48 self.namespace = namespace
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49 self.profile = profile
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50
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51 def _setCache(self, data):
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52 self._cache = data
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53
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54 def load(self):
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55 """Load persistent data from storage.
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56
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57 need to be called before any other operation
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58 @return: defers the PersistentDict instance itself
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59 """
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60 d = self.storage.getPrivates(self.namespace, binary=self.binary, profile=self.profile)
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61 d.addCallback(self._setCache)
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62 d.addCallback(lambda dummy: self)
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63 return d
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64
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65 def iteritems(self):
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66 return self._cache.iteritems()
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67
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68 def items(self):
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69 return self._cache.items()
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71 def __repr__(self):
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72 return self._cache.__repr__()
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73
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74 def __str__(self):
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75 return self._cache.__str__()
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76
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77 def __lt__(self, other):
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78 return self._cache.__lt__(other)
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79
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80 def __le__(self, other):
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81 return self._cache.__le__(other)
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83 def __eq__(self, other):
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84 return self._cache.__eq__(other)
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85
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86 def __ne__(self, other):
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87 return self._cache.__ne__(other)
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88
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89 def __gt__(self, other):
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90 return self._cache.__gt__(other)
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92 def __ge__(self, other):
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93 return self._cache.__ge__(other)
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95 def __cmp__(self, other):
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96 return self._cache.__cmp__(other)
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97
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98 def __hash__(self):
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99 return self._cache.__hash__()
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100
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101 def __nonzero__(self):
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102 return self._cache.__len__()
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103
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104 def __contains__(self, key):
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105 return self._cache.__contains__(key)
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106
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107 def __iter__(self):
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108 return self._cache.__iter__()
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109
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110 def __getitem__(self, key):
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111 return self._cache.__getitem__(key)
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112
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113 def __setitem__(self, key, value):
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114 self.storage.setPrivateValue(self.namespace, key, value, self.binary, self.profile)
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115 return self._cache.__setitem__(key, value)
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116
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117 def __delitem__(self, key):
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118 self.storage.delPrivateValue(self.namespace, key, self.binary, self.profile)
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119 return self._cache.__delitem__(key)
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120
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121 def get(self, key, default=None):
ab9ddf6c7eaf core: added get method to PersistentDictionary
Goffi <goffi@goffi.org>
parents: 439
diff changeset
122 return self._cache.get(key, default)
ab9ddf6c7eaf core: added get method to PersistentDictionary
Goffi <goffi@goffi.org>
parents: 439
diff changeset
123
1340
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
124 def setdefault(self, key, default):
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
125 try:
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
126 return self._cache[key]
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
127 except:
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
128 self.__setitem__(key, default)
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
129 return default
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
130
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
131 def force(self, name):
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
132 """Force saving of an attribute to storage
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
133
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
134 @return: deferred fired when data is actually saved
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
135 """
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
136 return self.storage.setPrivateValue(self.namespace, name, self._cache[name], self.binary, self.profile)
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
137
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
138
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
139 class PersistentBinaryDict(PersistentDict):
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
140 """Persistent dict where value can be any python data (instead of string only)"""
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
141 binary = True
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
142
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
143
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
144 class LazyPersistentBinaryDict(PersistentBinaryDict):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
145 ur"""PersistentBinaryDict which get key/value when needed
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
146
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
147 This Persistent need more database access, it is suitable for largest data,
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
148 to save memory.
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
149 /!\ most of methods return a Deferred
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
150 """
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
151 # TODO: missing methods should be implemented using database access
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
152 # TODO: a cache would be useful (which is deleted after a timeout)
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 585
diff changeset
153
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
154 def load(self):
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
155 # we show a warning as calling load on LazyPersistentBinaryDict sounds like a code mistake
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
156 log.warning(_(u"Calling load on LazyPersistentBinaryDict while it's not needed"))
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
157
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
158 def iteritems(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
159 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
160
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
161 def items(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
162 return self.storage.getPrivates(self.namespace, binary=self.binary, profile=self.profile)
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
163
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
164 def __repr__(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
165 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
166
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
167 def __str__(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
168 return "LazyPersistentBinaryDict (namespace: {})".format(self.namespace)
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
169
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
170 def __lt__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
171 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
172
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
173 def __le__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
174 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
175
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
176 def __eq__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
177 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
178
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
179 def __ne__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
180 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
181
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
182 def __gt__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
183 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
184
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
185 def __ge__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
186 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
187
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
188 def __cmp__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
189 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
190
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
191 def __hash__(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
192 return hash(unicode(self.__class__) + self.namespace + (self.profile or u''))
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
193
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
194 def __nonzero__(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
195 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
196
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
197 def __contains__(self, key):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
198 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
199
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
200 def __iter__(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
201 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
202
2644
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
203 def _data2value(self, data, key):
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
204 try:
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
205 return data[key]
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
206 except KeyError as e:
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
207 # we return a Failure here to avoid the jump
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
208 # into debugger in debug mode.
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
209 raise failure.Failure(e)
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
210
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
211 def __getitem__(self, key):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
212 """get the value as a Deferred"""
2644
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
213 d = self.storage.getPrivates(self.namespace, keys=[key], binary=self.binary,
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
214 profile=self.profile)
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
215 d.addCallback(self._data2value, key)
2209
ea41cf1e6d29 memory (persistent, sqlite): fixed getPrivates bug with keys arguments and its use in LazyPersistentBinaryDict
Goffi <goffi@goffi.org>
parents: 2182
diff changeset
216 return d
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
217
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
218 def __setitem__(self, key, value):
2644
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
219 self.storage.setPrivateValue(self.namespace, key, value, self.binary,
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
220 self.profile)
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
221
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
222 def __delitem__(self, key):
2302
f824b6026b73 core (memory/persistent): fixed calls to delPrivateValue
Goffi <goffi@goffi.org>
parents: 2209
diff changeset
223 self.storage.delPrivateValue(self.namespace, key, self.binary, self.profile)
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
224
2644
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
225 def _defaultOrException(self, failure_, default):
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
226 failure_.trap(KeyError)
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
227 return default
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
228
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
229 def get(self, key, default=None):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
230 d = self.__getitem__(key)
2644
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
231 d.addErrback(self._defaultOrException, default=default)
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
232 return d
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
233
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
234 def setdefault(self, key, default):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
235 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
236
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
237 def force(self, name, value):
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
238 """Force saving of an attribute to storage
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
239
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
240 @param value(object): value is needed for LazyPersistentBinaryDict
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
241 @return: deferred fired when data is actually saved
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
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242 """
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243 return self.storage.setPrivateValue(self.namespace, name, value, self.binary, self.profile)
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244
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245 def remove(self, key):
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246 """Delete a key from sotrage, and return a deferred called when it's done
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247
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248 @param key(unicode): key to delete
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249 @return (D): A deferred fired when delete is done
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250 """
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251 return self.storage.delPrivateValue(self.namespace, key, self.binary, self.profile)