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annotate roundup/backends/back_sqlite.py @ 2764:d3b3f1b3d59e

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sqlite database creation requires existing directory. create the database directory in sql_open_connection() if the directory does not exist.
author Alexander Smishlajev <a1s@users.sourceforge.net>
date Sat, 16 Oct 2004 12:52:53 +0000
parents 402d6d556558
children fddbbeb581bc
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1 # $Id: back_sqlite.py,v 1.35 2004-10-16 12:52:53 a1s Exp $
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2 '''Implements a backend for SQLite.
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3
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4 See https://pysqlite.sourceforge.net/ for pysqlite info
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5
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6
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7 NOTE: we use the rdbms_common table creation methods which define datatypes
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8 for the columns, but sqlite IGNORES these specifications.
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9 '''
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10 __docformat__ = 'restructuredtext'
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11
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12 import os, base64, marshal, shutil
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13
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14 from roundup import hyperdb, date, password
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15 from roundup.backends import locking
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16 from roundup.backends import rdbms_common
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17 import sqlite
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18
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19 def db_exists(config):
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20 return os.path.exists(os.path.join(config.DATABASE, 'db'))
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21
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22 def db_nuke(config):
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23 shutil.rmtree(config.DATABASE)
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24
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25 class Database(rdbms_common.Database):
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26 # char to use for positional arguments
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27 arg = '%s'
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28 hyperdb_to_sql_datatypes = {
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29 hyperdb.String : 'VARCHAR(255)',
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30 hyperdb.Date : 'VARCHAR(30)',
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31 hyperdb.Link : 'INTEGER',
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32 hyperdb.Interval : 'VARCHAR(255)',
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33 hyperdb.Password : 'VARCHAR(255)',
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34 hyperdb.Boolean : 'BOOLEAN',
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35 hyperdb.Number : 'REAL',
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36 }
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37 hyperdb_to_sql_value = {
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38 hyperdb.String : str,
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39 hyperdb.Date : lambda x: x.serialise(),
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40 hyperdb.Link : int,
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41 hyperdb.Interval : str,
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42 hyperdb.Password : str,
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43 hyperdb.Boolean : int,
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44 hyperdb.Number : lambda x: x,
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45 hyperdb.Multilink : lambda x: x, # used in journal marshalling
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46 }
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47 sql_to_hyperdb_value = {
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48 hyperdb.String : str,
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49 hyperdb.Date : lambda x: date.Date(str(x)),
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50 hyperdb.Link : str, # XXX numeric ids
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51 hyperdb.Interval : date.Interval,
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52 hyperdb.Password : lambda x: password.Password(encrypted=x),
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53 hyperdb.Boolean : int,
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54 hyperdb.Number : rdbms_common._num_cvt,
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55 hyperdb.Multilink : lambda x: x, # used in journal marshalling
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56 }
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57
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58 def sql_open_connection(self):
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59 '''Open a standard, non-autocommitting connection.
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60
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61 pysqlite will automatically BEGIN TRANSACTION for us.
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62 '''
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63 # make sure the database directory exists
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64 # database itself will be created by sqlite if needed
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65 if not os.path.isdir(self.config.DATABASE):
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66 os.makedirs(self.config.DATABASE)
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67
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68 db = os.path.join(self.config.DATABASE, 'db')
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69 self.config.logging.getLogger('hyperdb').info('open database %r'%db)
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70 conn = sqlite.connect(db=db)
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71 # set a 30 second timeout (extraordinarily generous) for handling
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72 # locked database
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73 conn.db.sqlite_busy_timeout(30 * 1000)
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74 cursor = conn.cursor()
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75 return (conn, cursor)
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76
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77 def open_connection(self):
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78 # ensure files are group readable and writable
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79 os.umask(0002)
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80
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81 (self.conn, self.cursor) = self.sql_open_connection()
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82
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83 try:
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84 self.load_dbschema()
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85 except sqlite.DatabaseError, error:
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86 if str(error) != 'no such table: schema':
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87 raise
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88 self.init_dbschema()
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89 self.sql('create table schema (schema varchar)')
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90 self.sql('create table ids (name varchar, num integer)')
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91 self.sql('create index ids_name_idx on ids(name)')
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92 self.create_version_2_tables()
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93
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94 def create_version_2_tables(self):
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95 self.sql('create table otks (otk_key varchar, '
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96 'otk_value varchar, otk_time integer)')
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97 self.sql('create index otks_key_idx on otks(otk_key)')
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98 self.sql('create table sessions (session_key varchar, '
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99 'session_time integer, session_value varchar)')
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100 self.sql('create index sessions_key_idx on '
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101 'sessions(session_key)')
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102
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103 # full-text indexing store
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104 self.sql('CREATE TABLE __textids (_class varchar, '
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105 '_itemid varchar, _prop varchar, _textid integer primary key) ')
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106 self.sql('CREATE TABLE __words (_word varchar, '
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107 '_textid integer)')
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108 self.sql('CREATE INDEX words_word_ids ON __words(_word)')
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109 sql = 'insert into ids (name, num) values (%s,%s)'%(self.arg, self.arg)
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110 self.sql(sql, ('__textids', 1))
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111
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112 def add_new_columns_v2(self):
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113 # update existing tables to have the new actor column
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114 tables = self.database_schema['tables']
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115 for classname, spec in self.classes.items():
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116 if tables.has_key(classname):
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117 dbspec = tables[classname]
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118 self.update_class(spec, dbspec, force=1, adding_v2=1)
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119 # we've updated - don't try again
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120 tables[classname] = spec.schema()
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121
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122 def fix_version_3_tables(self):
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123 # NOOP - no restriction on column length here
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124 pass
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125
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126 def update_class(self, spec, old_spec, force=0, adding_v2=0):
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127 ''' Determine the differences between the current spec and the
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128 database version of the spec, and update where necessary.
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129
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130 If 'force' is true, update the database anyway.
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131
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132 SQLite doesn't have ALTER TABLE, so we have to copy and
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diff changeset
133 regenerate the tables with the new schema.
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diff changeset
134 '''
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diff changeset
135 new_has = spec.properties.has_key
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diff changeset
136 new_spec = spec.schema()
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diff changeset
137 new_spec[1].sort()
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diff changeset
138 old_spec[1].sort()
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diff changeset
139 if not force and new_spec == old_spec:
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diff changeset
140 # no changes
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diff changeset
141 return 0
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diff changeset
142
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diff changeset
143 self.config.logging.getLogger('hyperdb').info('update_class %s'%spec.classname)
2077
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diff changeset
144
3e0961d6d44d Added the "actor" property.
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diff changeset
145 # detect multilinks that have been removed, and drop their table
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diff changeset
146 old_has = {}
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diff changeset
147 for name, prop in old_spec[1]:
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diff changeset
148 old_has[name] = 1
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diff changeset
149 if new_has(name) or not isinstance(prop, hyperdb.Multilink):
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diff changeset
150 continue
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diff changeset
151 # it's a multilink, and it's been removed - drop the old
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diff changeset
152 # table. First drop indexes.
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diff changeset
153 self.drop_multilink_table_indexes(spec.classname, ml)
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diff changeset
154 sql = 'drop table %s_%s'%(spec.classname, prop)
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diff changeset
155 self.sql(sql)
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diff changeset
156 old_has = old_has.has_key
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diff changeset
157
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diff changeset
158 # now figure how we populate the new table
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
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diff changeset
159 if adding_v2:
2077
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diff changeset
160 fetch = ['_activity', '_creation', '_creator']
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diff changeset
161 else:
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diff changeset
162 fetch = ['_actor', '_activity', '_creation', '_creator']
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diff changeset
163 properties = spec.getprops()
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diff changeset
164 for propname,x in new_spec[1]:
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diff changeset
165 prop = properties[propname]
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diff changeset
166 if isinstance(prop, hyperdb.Multilink):
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diff changeset
167 if not old_has(propname):
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diff changeset
168 # we need to create the new table
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diff changeset
169 self.create_multilink_table(spec, propname)
2137
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diff changeset
170 elif force:
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diff changeset
171 tn = '%s_%s'%(spec.classname, propname)
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diff changeset
172 # grabe the current values
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diff changeset
173 sql = 'select linkid, nodeid from %s'%tn
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diff changeset
174 self.sql(sql)
2137
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diff changeset
175 rows = self.cursor.fetchall()
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diff changeset
176
c49495585c44 Fix for sqlite backend migration. Change Cookie -> SimpleCookie
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diff changeset
177 # drop the old table
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diff changeset
178 self.drop_multilink_table_indexes(spec.classname, propname)
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diff changeset
179 sql = 'drop table %s'%tn
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diff changeset
180 self.sql(sql)
2137
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diff changeset
181
c49495585c44 Fix for sqlite backend migration. Change Cookie -> SimpleCookie
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diff changeset
182 # re-create and populate the new table
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diff changeset
183 self.create_multilink_table(spec, propname)
2645
8250c63c3963 remove space at EOL, add vim modeline
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2633
diff changeset
184 sql = '''insert into %s (linkid, nodeid) values
2137
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diff changeset
185 (%s, %s)'''%(tn, self.arg, self.arg)
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diff changeset
186 for linkid, nodeid in rows:
2514
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diff changeset
187 self.sql(sql, (int(linkid), int(nodeid)))
2077
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diff changeset
188 elif old_has(propname):
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diff changeset
189 # we copy this col over from the old table
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diff changeset
190 fetch.append('_'+propname)
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
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diff changeset
191
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
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diff changeset
192 # select the data out of the old table
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diff changeset
193 fetch.append('id')
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
194 fetch.append('__retired__')
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
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diff changeset
195 fetchcols = ','.join(fetch)
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diff changeset
196 cn = spec.classname
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diff changeset
197 sql = 'select %s from _%s'%(fetchcols, cn)
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diff changeset
198 self.sql(sql)
2077
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diff changeset
199 olddata = self.cursor.fetchall()
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
200
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
201 # TODO: update all the other index dropping code
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
202 self.drop_class_table_indexes(cn, old_spec[0])
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
203
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
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diff changeset
204 # drop the old table
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diff changeset
205 self.sql('drop table _%s'%cn)
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
206
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
207 # create the new table
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
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diff changeset
208 self.create_class_table(spec)
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
209
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
210 if olddata:
2273
c77483d2cda4 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 2244
diff changeset
211 inscols = ['id', '_actor', '_activity', '_creation', '_creator']
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
212 for propname,x in new_spec[1]:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
213 prop = properties[propname]
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
214 if isinstance(prop, hyperdb.Multilink):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
215 continue
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
216 elif isinstance(prop, hyperdb.Interval):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
217 inscols.append('_'+propname)
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
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diff changeset
218 inscols.append('__'+propname+'_int__')
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
219 elif old_has(propname):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
220 # we copy this col over from the old table
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
221 inscols.append('_'+propname)
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
222
2077
3e0961d6d44d Added the "actor" property.
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diff changeset
223 # do the insert of the old data - the new columns will have
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
224 # NULL values
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
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diff changeset
225 args = ','.join([self.arg for x in inscols])
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
226 cols = ','.join(inscols)
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
227 sql = 'insert into _%s (%s) values (%s)'%(cn, cols, args)
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
228 for entry in olddata:
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
229 d = []
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
230 for name in inscols:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
231 # generate the new value for the Interval int column
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
232 if name.endswith('_int__'):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
233 name = name[2:-6]
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
234 if entry.has_key(name):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
235 v = hyperdb.Interval(entry[name]).as_seconds()
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
236 else:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
237 v = None
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
238 elif entry.has_key(name):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
239 v = entry[name]
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
240 else:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
241 v = None
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
242 d.append(v)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
243 self.sql(sql, tuple(d))
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
244
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
245 return 1
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
246
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
247 def sql_close(self):
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
248 ''' Squash any error caused by us already having closed the
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
249 connection.
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
250 '''
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
251 try:
2374
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
252 self.conn.close()
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
253 except sqlite.ProgrammingError, value:
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
254 if str(value) != 'close failed - Connection is closed.':
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
255 raise
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
256
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
257 def sql_rollback(self):
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
258 ''' Squash any error caused by us having closed the connection (and
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
259 therefore not having anything to roll back)
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
260 '''
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
261 try:
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
262 self.conn.rollback()
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
263 except sqlite.ProgrammingError, value:
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
264 if str(value) != 'rollback failed - Connection is closed.':
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
265 raise
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
266
1165
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
267 def __repr__(self):
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
268 return '<roundlite 0x%x>'%id(self)
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
269
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
270 def sql_commit(self):
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
271 ''' Actually commit to the database.
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
272
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
273 Ignore errors if there's nothing to commit.
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
274 '''
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
275 try:
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
276 self.conn.commit()
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
277 except sqlite.DatabaseError, error:
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
278 if str(error) != 'cannot commit - no transaction is active':
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
279 raise
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280 # open a new cursor for subsequent work
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281 self.cursor = self.conn.cursor()
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282
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283 def sql_index_exists(self, table_name, index_name):
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284 self.sql('pragma index_list(%s)'%table_name)
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285 for entry in self.cursor.fetchall():
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286 if entry[1] == index_name:
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287 return 1
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288 return 0
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289
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290 # old-skool id generation
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291 def newid(self, classname):
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292 ''' Generate a new id for the given class
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293 '''
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294 # get the next ID
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295 sql = 'select num from ids where name=%s'%self.arg
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296 self.sql(sql, (classname, ))
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297 newid = int(self.cursor.fetchone()[0])
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298
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299 # update the counter
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300 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
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301 vals = (int(newid)+1, classname)
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302 self.sql(sql, vals)
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303
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304 # return as string
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305 return str(newid)
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306
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307 def setid(self, classname, setid):
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308 ''' Set the id counter: used during import of database
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309
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310 We add one to make it behave like the seqeunces in postgres.
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311 '''
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312 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
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313 vals = (int(setid)+1, classname)
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314 self.sql(sql, vals)
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315
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316 def create_class(self, spec):
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317 rdbms_common.Database.create_class(self, spec)
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318 sql = 'insert into ids (name, num) values (%s, %s)'
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319 vals = (spec.classname, 1)
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320 self.sql(sql, vals)
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321
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322 class sqliteClass:
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323 def filter(self, search_matches, filterspec, sort=(None,None),
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324 group=(None,None)):
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325 ''' If there's NO matches to a fetch, sqlite returns NULL
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326 instead of nothing
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327 '''
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328 return filter(None, rdbms_common.Class.filter(self, search_matches,
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329 filterspec, sort=sort, group=group))
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330
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331 class Class(sqliteClass, rdbms_common.Class):
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332 pass
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333
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334 class IssueClass(sqliteClass, rdbms_common.IssueClass):
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335 pass
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336
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337 class FileClass(sqliteClass, rdbms_common.FileClass):
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338 pass
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339
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340 # vim: set et sts=4 sw=4 :
Roundup Issue Tracker: http://roundup-tracker.org/