Mercurial > p > roundup > code
annotate roundup/backends/back_bsddb3.py @ 1631:8a908bbad1ef
A couple of form value handling changes:
- multilink properties may hhave multiple form values "1", "2,4", "5", ...
- string search properties are split on whitespace and match any of the
values
| author | Richard Jones <richard@users.sourceforge.net> |
|---|---|
| date | Fri, 09 May 2003 01:47:51 +0000 |
| parents | 8dd4f736370b |
| children | a3b1b1dcf639 4ad75ca452d9 |
| rev | line source |
|---|---|
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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 # |
| 214 | 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_bsddb3.py,v 1.19 2003-05-09 01:47:50 richard Exp $ |
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19 ''' |
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20 This module defines a backend that saves the hyperdatabase in BSDDB3. |
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21 ''' |
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22 |
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23 import bsddb3, os, marshal |
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24 from roundup import hyperdb, date |
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25 |
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26 # these classes are so similar, we just use the anydbm methods |
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27 from back_anydbm import Database, Class, FileClass, IssueClass |
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28 |
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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(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 bsddb3.btopen(db, 'n') |
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41 db = os.path.join(self.dir, 'journals.%s'%cn) |
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42 bsddb3.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 bsddb3.btopen(path, mode) |
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51 else: |
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52 return bsddb3.btopen(path, 'c') |
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53 |
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54 def opendb(self, name, mode): |
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55 '''Low-level database opener that gets around anydbm/dbm |
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56 eccentricities. |
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57 ''' |
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58 if __debug__: |
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59 print >>hyperdb.DEBUG, self, 'opendb', (self, name, mode) |
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60 # determine which DB wrote the class file |
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61 path = os.path.join(os.getcwd(), self.dir, name) |
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62 if not os.path.exists(path): |
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63 if __debug__: |
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64 print >>hyperdb.DEBUG, "opendb bsddb3.open(%r, 'c')"%path |
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65 return bsddb3.btopen(path, 'c') |
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66 |
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67 # open the database with the correct module |
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68 if __debug__: |
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69 print >>hyperdb.DEBUG, "opendb bsddb3.open(%r, %r)"%(path, mode) |
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70 return bsddb3.btopen(path, mode) |
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71 |
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72 # |
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73 # Journal |
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74 # |
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75 def getjournal(self, classname, nodeid): |
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76 ''' get the journal for id |
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77 |
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78 Raise IndexError if the node doesn't exist (as per history()'s |
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79 API) |
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80 ''' |
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81 if __debug__: |
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82 print >>hyperdb.DEBUG, 'getjournal', (self, classname, nodeid) |
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83 |
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84 # our journal result |
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85 res = [] |
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86 |
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87 # add any journal entries for transactions not committed to the |
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88 # database |
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89 for method, args in self.transactions: |
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90 if method != self.doSaveJournal: |
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91 continue |
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92 (cache_classname, cache_nodeid, cache_action, cache_params, |
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93 cache_creator, cache_creation) = args |
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94 if cache_classname == classname and cache_nodeid == nodeid: |
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95 if not cache_creator: |
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96 cache_creator = self.curuserid |
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97 if not cache_creation: |
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98 cache_creation = date.Date() |
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99 res.append((cache_nodeid, cache_creation, cache_creator, |
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100 cache_action, cache_params)) |
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101 |
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102 # attempt to open the journal - in some rare cases, the journal may |
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103 # not exist |
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104 try: |
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105 db = bsddb3.btopen(os.path.join(self.dir, 'journals.%s'%classname), |
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106 'r') |
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107 except bsddb3._db.DBNoSuchFileError: |
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108 raise IndexError, 'no such %s %s'%(classname, nodeid) |
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109 # more handling of bad journals |
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110 if not db.has_key(nodeid): |
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111 db.close() |
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112 if res: |
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113 # we have some unsaved journal entries, be happy! |
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114 return res |
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115 raise IndexError, 'no such %s %s'%(classname, nodeid) |
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116 journal = marshal.loads(db[nodeid]) |
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117 db.close() |
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118 |
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119 # add all the saved journal entries for this node |
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120 for nodeid, date_stamp, user, action, params in journal: |
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121 res.append((nodeid, date.Date(date_stamp), user, action, params)) |
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122 return res |
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123 |
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124 def getCachedJournalDB(self, classname): |
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125 ''' get the journal db, looking in our cache of databases for commit |
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126 ''' |
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127 # get the database handle |
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128 db_name = 'journals.%s'%classname |
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129 if self.databases.has_key(db_name): |
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130 return self.databases[db_name] |
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131 else: |
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132 db = bsddb3.btopen(os.path.join(self.dir, db_name), 'c') |
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133 self.databases[db_name] = db |
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134 return db |
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135 |
