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annotate roundup/backends/back_bsddb.py @ 519:2dd8571ca738

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fixes to migration text
author Richard Jones <richard@users.sourceforge.net>
date Fri, 11 Jan 2002 03:34:52 +0000
parents de5bf4191f11
children e346a9792335 c242455d9b46
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1 #
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2 # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
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3 # This module is free software, and you may redistribute it and/or modify
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4 # under the same terms as Python, so long as this copyright message and
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5 # disclaimer are retained in their original form.
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6 #
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7 # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
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8 # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
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9 # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
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10 # POSSIBILITY OF SUCH DAMAGE.
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11 #
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12 # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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13 # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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14 # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
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15 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
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16 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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17 #
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18 #$Id: back_bsddb.py,v 1.13 2001-12-10 22:20:01 richard Exp $
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19 '''
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20 This module defines a backend that saves the hyperdatabase in BSDDB.
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21 '''
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23 import bsddb, os, marshal
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24 from roundup import hyperdb, date, password
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26 # these classes are so similar, we just use the anydbm methods
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27 import back_anydbm
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29 #
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30 # Now the database
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31 #
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32 class Database(back_anydbm.Database):
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33 """A database for storing records containing flexible data types."""
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34 #
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35 # Class DBs
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36 #
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37 def clear(self):
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38 for cn in self.classes.keys():
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39 db = os.path.join(self.dir, 'nodes.%s'%cn)
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40 bsddb.btopen(db, 'n')
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41 db = os.path.join(self.dir, 'journals.%s'%cn)
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42 bsddb.btopen(db, 'n')
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43
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44 def getclassdb(self, classname, mode='r'):
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45 ''' grab a connection to the class db that will be used for
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46 multiple actions
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47 '''
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48 path = os.path.join(os.getcwd(), self.dir, 'nodes.%s'%classname)
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49 if os.path.exists(path):
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50 return bsddb.btopen(path, mode)
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51 else:
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52 return bsddb.btopen(path, 'n')
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54 #
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55 # Journal
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56 #
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57 def getjournal(self, classname, nodeid):
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58 ''' get the journal for id
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59 '''
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60 # attempt to open the journal - in some rare cases, the journal may
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61 # not exist
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62 try:
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63 db = bsddb.btopen(os.path.join(self.dir, 'journals.%s'%classname),
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64 'r')
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65 except bsddb.error, error:
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66 if error.args[0] != 2: raise
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67 return []
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68 # mor handling of bad journals
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69 if not db.has_key(nodeid): return []
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70 journal = marshal.loads(db[nodeid])
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71 res = []
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72 for entry in journal:
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73 (nodeid, date_stamp, self.journaltag, action, params) = entry
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74 date_obj = date.Date(date_stamp)
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75 res.append((nodeid, date_obj, self.journaltag, action, params))
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76 db.close()
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77 return res
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78
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79 def _doSaveJournal(self, classname, nodeid, action, params):
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80 entry = (nodeid, date.Date().get_tuple(), self.journaltag, action,
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81 params)
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82 db = bsddb.btopen(os.path.join(self.dir, 'journals.%s'%classname), 'c')
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83 if db.has_key(nodeid):
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84 s = db[nodeid]
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85 l = marshal.loads(db[nodeid])
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86 l.append(entry)
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87 else:
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88 l = [entry]
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89 db[nodeid] = marshal.dumps(l)
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90 db.close()
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91
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92 #
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93 #$Log: not supported by cvs2svn $
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94 #Revision 1.12 2001/11/21 02:34:18 richard
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95 #Added a target version field to the extended issue schema
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96 #
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97 #Revision 1.11 2001/10/09 23:58:10 richard
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98 #Moved the data stringification up into the hyperdb.Class class' get, set
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99 #and create methods. This means that the data is also stringified for the
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100 #journal call, and removes duplication of code from the backends. The
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101 #backend code now only sees strings.
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102 #
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103 #Revision 1.10 2001/10/09 07:25:59 richard
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104 #Added the Password property type. See "pydoc roundup.password" for
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105 #implementation details. Have updated some of the documentation too.
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106 #
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107 #Revision 1.9 2001/08/12 06:32:36 richard
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108 #using isinstance(blah, Foo) now instead of isFooType
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109 #
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110 #Revision 1.8 2001/08/07 00:24:42 richard
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111 #stupid typo
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112 #
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113 #Revision 1.7 2001/08/07 00:15:51 richard
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114 #Added the copyright/license notice to (nearly) all files at request of
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115 #Bizar Software.
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116 #
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117 #Revision 1.6 2001/07/30 02:36:23 richard
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118 #Handle non-existence of db files in the other backends (code from anydbm).
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119 #
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120 #Revision 1.5 2001/07/30 01:41:36 richard
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121 #Makes schema changes mucho easier.
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122 #
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123 #Revision 1.4 2001/07/23 08:25:33 richard
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124 #more handling of bad journals
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125 #
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126 #Revision 1.3 2001/07/23 08:20:44 richard
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127 #Moved over to using marshal in the bsddb and anydbm backends.
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128 #roundup-admin now has a "freshen" command that'll load/save all nodes (not
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129 # retired - mod hyperdb.Class.list() so it lists retired nodes)
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130 #
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131 #Revision 1.2 2001/07/23 07:56:05 richard
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132 #Storing only marshallable data in the db - no nasty pickled class references.
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133 #
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134 #Revision 1.1 2001/07/23 07:22:13 richard
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135 #*sigh* some databases have _foo.so as their underlying implementation.
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136 #This time for sure, Rocky.
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137 #
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138 #Revision 1.1 2001/07/23 07:15:57 richard
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139 #Moved the backends into the backends package. Anydbm hasn't been tested at all.
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140 #
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141 #Revision 1.1 2001/07/23 06:23:41 richard
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142 #moved hyper_bsddb.py to the new backends package as bsddb.py
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143 #
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144 #Revision 1.2 2001/07/22 12:09:32 richard
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145 #Final commit of Grande Splite
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146 #
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147 #Revision 1.1 2001/07/22 11:58:35 richard
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148 #More Grande Splite
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149 #
Roundup Issue Tracker: http://roundup-tracker.org/