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