author | Brendan Donegan <brendand@symbian.org> |
Thu, 01 Jul 2010 14:51:21 +0100 | |
branch | nvmemory |
changeset 81 | 0f0bbe5dfe4b |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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#!/bin/env python |
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#------------------------------------------------------------------------ |
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# Copyright (c) 1997-2001 by Total Control Software |
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# All Rights Reserved |
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#------------------------------------------------------------------------ |
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# |
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# Module Name: dbShelve.py |
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# |
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# Description: A reimplementation of the standard shelve.py that |
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# forces the use of cPickle, and DB. |
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# |
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# Creation Date: 11/3/97 3:39:04PM |
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# |
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# License: This is free software. You may use this software for any |
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# purpose including modification/redistribution, so long as |
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# this header remains intact and that you do not claim any |
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# rights of ownership or authorship of this software. This |
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# software has been tested, but no warranty is expressed or |
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# implied. |
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# |
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# 13-Dec-2000: Updated to be used with the new bsddb3 package. |
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# Added DBShelfCursor class. |
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# |
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#------------------------------------------------------------------------ |
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|
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"""Manage shelves of pickled objects using bsddb database files for the |
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storage. |
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""" |
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#------------------------------------------------------------------------ |
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import cPickle |
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import sys |
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|
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import sys |
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absolute_import = (sys.version_info[0] >= 3) |
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if absolute_import : |
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# Because this syntaxis is not valid before Python 2.5 |
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exec("from . import db") |
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else : |
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import db |
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|
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#At version 2.3 cPickle switched to using protocol instead of bin |
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if sys.version_info[:3] >= (2, 3, 0): |
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HIGHEST_PROTOCOL = cPickle.HIGHEST_PROTOCOL |
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# In python 2.3.*, "cPickle.dumps" accepts no |
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# named parameters. "pickle.dumps" accepts them, |
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# so this seems a bug. |
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if sys.version_info[:3] < (2, 4, 0): |
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def _dumps(object, protocol): |
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return cPickle.dumps(object, protocol) |
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else : |
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def _dumps(object, protocol): |
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return cPickle.dumps(object, protocol=protocol) |
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else: |
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HIGHEST_PROTOCOL = None |
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def _dumps(object, protocol): |
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return cPickle.dumps(object, bin=protocol) |
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if sys.version_info[0:2] <= (2, 5) : |
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try: |
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from UserDict import DictMixin |
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except ImportError: |
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# DictMixin is new in Python 2.3 |
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class DictMixin: pass |
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MutableMapping = DictMixin |
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else : |
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import collections |
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MutableMapping = collections.MutableMapping |
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|
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#------------------------------------------------------------------------ |
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|
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def open(filename, flags=db.DB_CREATE, mode=0660, filetype=db.DB_HASH, |
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dbenv=None, dbname=None): |
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""" |
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A simple factory function for compatibility with the standard |
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shleve.py module. It can be used like this, where key is a string |
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and data is a pickleable object: |
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|
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from bsddb import dbshelve |
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db = dbshelve.open(filename) |
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|
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db[key] = data |
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|
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db.close() |
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""" |
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if type(flags) == type(''): |
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sflag = flags |
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if sflag == 'r': |
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flags = db.DB_RDONLY |
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elif sflag == 'rw': |
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flags = 0 |
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elif sflag == 'w': |
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flags = db.DB_CREATE |
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elif sflag == 'c': |
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flags = db.DB_CREATE |
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elif sflag == 'n': |
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flags = db.DB_TRUNCATE | db.DB_CREATE |
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else: |
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raise db.DBError, "flags should be one of 'r', 'w', 'c' or 'n' or use the bsddb.db.DB_* flags" |
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|
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d = DBShelf(dbenv) |
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d.open(filename, dbname, filetype, flags, mode) |
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return d |
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|
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#--------------------------------------------------------------------------- |
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110 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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class DBShelveError(db.DBError): pass |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
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|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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113 |
|
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class DBShelf(MutableMapping): |
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"""A shelf to hold pickled objects, built upon a bsddb DB object. It |
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automatically pickles/unpickles data objects going to/from the DB. |
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117 |
""" |
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def __init__(self, dbenv=None): |
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self.db = db.DB(dbenv) |
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self._closed = True |
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if HIGHEST_PROTOCOL: |
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self.protocol = HIGHEST_PROTOCOL |
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else: |
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self.protocol = 1 |
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|
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126 |
|
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def __del__(self): |
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self.close() |
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|
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|
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def __getattr__(self, name): |
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"""Many methods we can just pass through to the DB object. |
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133 |
(See below) |
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""" |
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return getattr(self.db, name) |
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|
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|
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#----------------------------------- |
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# Dictionary access methods |
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140 |
|
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141 |
def __len__(self): |
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return len(self.db) |
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143 |
|
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144 |
|
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145 |
def __getitem__(self, key): |
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data = self.db[key] |
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return cPickle.loads(data) |
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|
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149 |
|
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150 |
def __setitem__(self, key, value): |
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data = _dumps(value, self.protocol) |
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self.db[key] = data |
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153 |
|
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154 |
|
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155 |
def __delitem__(self, key): |
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|
156 |
del self.db[key] |
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parents:
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|
157 |
|
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|
158 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
159 |
def keys(self, txn=None): |
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|
160 |
if txn != None: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
161 |
return self.db.keys(txn) |
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162 |
else: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
163 |
return self.db.keys() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
164 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
165 |
if sys.version_info[0:2] >= (2, 6) : |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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166 |
def __iter__(self) : |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
167 |
return self.db.__iter__() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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168 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
169 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
170 |
def open(self, *args, **kwargs): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
171 |
self.db.open(*args, **kwargs) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
172 |
self._closed = False |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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173 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
174 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
175 |
def close(self, *args, **kwargs): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
176 |
self.db.close(*args, **kwargs) |
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parents:
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|
177 |
self._closed = True |
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|
178 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
179 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
180 |
def __repr__(self): |
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parents:
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|
181 |
if self._closed: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
182 |
return '<DBShelf @ 0x%x - closed>' % (id(self)) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
183 |
else: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
184 |
return repr(dict(self.iteritems())) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
185 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
186 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
187 |
def items(self, txn=None): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
188 |
if txn != None: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
189 |
items = self.db.items(txn) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
190 |
else: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
191 |
items = self.db.items() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
192 |
newitems = [] |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
193 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
194 |
for k, v in items: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
195 |
newitems.append( (k, cPickle.loads(v)) ) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
196 |
return newitems |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
197 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
198 |
def values(self, txn=None): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
199 |
if txn != None: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
200 |
values = self.db.values(txn) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
201 |
else: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
202 |
values = self.db.values() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
203 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
204 |
return map(cPickle.loads, values) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
205 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
206 |
#----------------------------------- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
207 |
# Other methods |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
208 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
209 |
def __append(self, value, txn=None): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
210 |
data = _dumps(value, self.protocol) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
211 |
return self.db.append(data, txn) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
212 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
213 |
def append(self, value, txn=None): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
214 |
if self.get_type() == db.DB_RECNO: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
215 |
return self.__append(value, txn=txn) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
216 |
raise DBShelveError, "append() only supported when dbshelve opened with filetype=dbshelve.db.DB_RECNO" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
217 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
218 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
219 |
def associate(self, secondaryDB, callback, flags=0): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
220 |
def _shelf_callback(priKey, priData, realCallback=callback): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
221 |
# Safe in Python 2.x because expresion short circuit |
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|
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if sys.version_info[0] < 3 or isinstance(priData, bytes) : |
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|
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data = cPickle.loads(priData) |
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|
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else : |
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|
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data = cPickle.loads(bytes(priData, "iso8859-1")) # 8 bits |
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|
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return realCallback(priKey, data) |
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|
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|
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|
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return self.db.associate(secondaryDB, _shelf_callback, flags) |
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|
229 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
230 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
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#def get(self, key, default=None, txn=None, flags=0): |
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|
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def get(self, *args, **kw): |
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|
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# We do it with *args and **kw so if the default value wasn't |
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|
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# given nothing is passed to the extension module. That way |
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|
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# an exception can be raised if set_get_returns_none is turned |
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|
236 |
# off. |
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|
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data = apply(self.db.get, args, kw) |
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|
238 |
try: |
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|
239 |
return cPickle.loads(data) |
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|
240 |
except (EOFError, TypeError, cPickle.UnpicklingError): |
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parents:
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|
241 |
return data # we may be getting the default value, or None, |
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|
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# so it doesn't need unpickled. |
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|
243 |
|
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|
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def get_both(self, key, value, txn=None, flags=0): |
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parents:
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|
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data = _dumps(value, self.protocol) |
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parents:
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|
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data = self.db.get(key, data, txn, flags) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
247 |
return cPickle.loads(data) |
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|
248 |
|
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|
249 |
|
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|
250 |
def cursor(self, txn=None, flags=0): |
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|
251 |
c = DBShelfCursor(self.db.cursor(txn, flags)) |
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|
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c.protocol = self.protocol |
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|
253 |
return c |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
254 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
255 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
256 |
def put(self, key, value, txn=None, flags=0): |
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parents:
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|
257 |
data = _dumps(value, self.protocol) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
258 |
return self.db.put(key, data, txn, flags) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
259 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
260 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
261 |
def join(self, cursorList, flags=0): |
2fb8b9db1c86
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parents:
diff
changeset
|
262 |
raise NotImplementedError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
263 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
264 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
265 |
#---------------------------------------------- |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
266 |
# Methods allowed to pass-through to self.db |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
267 |
# |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
268 |
# close, delete, fd, get_byteswapped, get_type, has_key, |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
269 |
# key_range, open, remove, rename, stat, sync, |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
270 |
# upgrade, verify, and all set_* methods. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
271 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
272 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
273 |
#--------------------------------------------------------------------------- |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
274 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
275 |
class DBShelfCursor: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
276 |
""" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
277 |
""" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
278 |
def __init__(self, cursor): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
279 |
self.dbc = cursor |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
280 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
281 |
def __del__(self): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
282 |
self.close() |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
283 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
284 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
285 |
def __getattr__(self, name): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
286 |
"""Some methods we can just pass through to the cursor object. (See below)""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
287 |
return getattr(self.dbc, name) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
288 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
289 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
290 |
#---------------------------------------------- |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
291 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
292 |
def dup(self, flags=0): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
293 |
c = DBShelfCursor(self.dbc.dup(flags)) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
294 |
c.protocol = self.protocol |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
295 |
return c |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
296 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
297 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
298 |
def put(self, key, value, flags=0): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
299 |
data = _dumps(value, self.protocol) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
300 |
return self.dbc.put(key, data, flags) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
301 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
302 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
303 |
def get(self, *args): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
304 |
count = len(args) # a method overloading hack |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
305 |
method = getattr(self, 'get_%d' % count) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
306 |
apply(method, args) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
307 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
308 |
def get_1(self, flags): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
309 |
rec = self.dbc.get(flags) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
310 |
return self._extract(rec) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
311 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
312 |
def get_2(self, key, flags): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
313 |
rec = self.dbc.get(key, flags) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
314 |
return self._extract(rec) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
315 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
316 |
def get_3(self, key, value, flags): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
317 |
data = _dumps(value, self.protocol) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
318 |
rec = self.dbc.get(key, flags) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
319 |
return self._extract(rec) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
320 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
321 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
322 |
def current(self, flags=0): return self.get_1(flags|db.DB_CURRENT) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
323 |
def first(self, flags=0): return self.get_1(flags|db.DB_FIRST) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
324 |
def last(self, flags=0): return self.get_1(flags|db.DB_LAST) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
325 |
def next(self, flags=0): return self.get_1(flags|db.DB_NEXT) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
326 |
def prev(self, flags=0): return self.get_1(flags|db.DB_PREV) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
327 |
def consume(self, flags=0): return self.get_1(flags|db.DB_CONSUME) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
328 |
def next_dup(self, flags=0): return self.get_1(flags|db.DB_NEXT_DUP) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
329 |
def next_nodup(self, flags=0): return self.get_1(flags|db.DB_NEXT_NODUP) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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def prev_nodup(self, flags=0): return self.get_1(flags|db.DB_PREV_NODUP) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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332 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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def get_both(self, key, value, flags=0): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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data = _dumps(value, self.protocol) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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rec = self.dbc.get_both(key, flags) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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return self._extract(rec) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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337 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
338 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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339 |
def set(self, key, flags=0): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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rec = self.dbc.set(key, flags) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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return self._extract(rec) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
342 |
|
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def set_range(self, key, flags=0): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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rec = self.dbc.set_range(key, flags) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
345 |
return self._extract(rec) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
346 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
347 |
def set_recno(self, recno, flags=0): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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rec = self.dbc.set_recno(recno, flags) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
349 |
return self._extract(rec) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
350 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
351 |
set_both = get_both |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
352 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
353 |
def _extract(self, rec): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
354 |
if rec is None: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
355 |
return None |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
356 |
else: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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changeset
|
357 |
key, data = rec |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
358 |
# Safe in Python 2.x because expresion short circuit |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
359 |
if sys.version_info[0] < 3 or isinstance(data, bytes) : |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
360 |
return key, cPickle.loads(data) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
361 |
else : |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
362 |
return key, cPickle.loads(bytes(data, "iso8859-1")) # 8 bits |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
363 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
364 |
#---------------------------------------------- |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
365 |
# Methods allowed to pass-through to self.dbc |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
366 |
# |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
367 |
# close, count, delete, get_recno, join_item |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
368 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
369 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
370 |
#--------------------------------------------------------------------------- |