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annotate roundup/backends/back_mysql.py @ 5075:04a8022ae0de

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Remove 'import *' statement from dist/backends/back_mysql.py There are various 'import *' statements scattered through the code which are generally not a good thing. These should be fairly safe changes, but I'll commit them one file at a time to make it easier to track down issues with a bisect if they crop up later.
author John Kristensen <john@jerrykan.com>
date Fri, 10 Jun 2016 18:14:36 +1000
parents e424987d294a
children e74c3611b138
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #
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2 # Copyright (c) 2003 Martynas Sklyzmantas, Andrey Lebedev <andrey@micro.lt>
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3 #
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4 # This module is free software, and you may redistribute it and/or modify
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5 # under the same terms as Python, so long as this copyright message and
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6 # disclaimer are retained in their original form.
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7 #
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8
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9 '''This module defines a backend implementation for MySQL.
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10
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11
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12 How to implement AUTO_INCREMENT:
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13
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14 mysql> create table foo (num integer auto_increment primary key, name
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15 varchar(255)) AUTO_INCREMENT=1 ENGINE=InnoDB;
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16
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17 ql> insert into foo (name) values ('foo5');
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18 Query OK, 1 row affected (0.00 sec)
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19
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20 mysql> SELECT num FROM foo WHERE num IS NULL;
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21 +-----+
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22 | num |
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23 +-----+
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24 | 4 |
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25 +-----+
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26 1 row in set (0.00 sec)
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27
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28 mysql> SELECT num FROM foo WHERE num IS NULL;
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29 Empty set (0.00 sec)
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30
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31 NOTE: we don't need an index on the id column if it's PRIMARY KEY
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32
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33 '''
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34 __docformat__ = 'restructuredtext'
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35
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36 from roundup import date, hyperdb, password
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37 from roundup.backends import rdbms_common
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38 import MySQLdb
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39 import os, shutil
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40 from MySQLdb.constants import ER
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41 import logging
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42
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43 isolation_levels = \
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44 { 'read uncommitted': 'READ UNCOMMITTED'
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45 , 'read committed': 'READ COMMITTED'
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46 , 'repeatable read': 'REPEATABLE READ'
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47 , 'serializable': 'SERIALIZABLE'
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48 }
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49
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50 def connection_dict(config, dbnamestr=None):
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51 d = rdbms_common.connection_dict(config, dbnamestr)
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52 if d.has_key('password'):
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53 d['passwd'] = d['password']
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54 del d['password']
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55 if d.has_key('port'):
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56 d['port'] = int(d['port'])
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57 return d
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58
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59 def db_nuke(config):
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60 """Clear all database contents and drop database itself"""
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61 if db_exists(config):
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62 kwargs = connection_dict(config)
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63 conn = MySQLdb.connect(**kwargs)
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64 try:
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65 conn.select_db(config.RDBMS_NAME)
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66 except:
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67 # no, it doesn't exist
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68 pass
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69 else:
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70 cursor = conn.cursor()
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71 cursor.execute("SHOW TABLES")
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72 tables = cursor.fetchall()
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73 # stupid MySQL bug requires us to drop all the tables first
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74 for table in tables:
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75 command = 'DROP TABLE `%s`'%table[0]
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76 logging.debug(command)
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77 cursor.execute(command)
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78 command = "DROP DATABASE %s"%config.RDBMS_NAME
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79 logging.info(command)
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80 cursor.execute(command)
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81 conn.commit()
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82 conn.close()
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83
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84 if os.path.exists(config.DATABASE):
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85 shutil.rmtree(config.DATABASE)
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86
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87 def db_create(config):
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88 """Create the database."""
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89 kwargs = connection_dict(config)
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90 conn = MySQLdb.connect(**kwargs)
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91 cursor = conn.cursor()
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92 command = "CREATE DATABASE %s"%config.RDBMS_NAME
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93 logging.info(command)
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94 cursor.execute(command)
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95 conn.commit()
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96 conn.close()
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97
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98 def db_exists(config):
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99 """Check if database already exists."""
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100 kwargs = connection_dict(config)
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101 conn = MySQLdb.connect(**kwargs)
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102 try:
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103 try:
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104 conn.select_db(config.RDBMS_NAME)
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105 except MySQLdb.OperationalError:
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106 return 0
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107 finally:
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108 conn.close()
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109 return 1
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110
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111
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112 class Database(rdbms_common.Database):
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113 arg = '%s'
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114
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115 # used by some code to switch styles of query
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116 implements_intersect = 0
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117
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118 # Backend for MySQL to use.
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119 # InnoDB is faster, but if you're running <4.0.16 then you'll need to
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120 # use BDB to pass all unit tests.
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121 mysql_backend = 'InnoDB'
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122 #mysql_backend = 'BDB'
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123
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124 hyperdb_to_sql_datatypes = {
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125 hyperdb.String : 'TEXT',
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126 hyperdb.Date : 'DATETIME',
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127 hyperdb.Link : 'INTEGER',
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128 hyperdb.Interval : 'VARCHAR(255)',
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129 hyperdb.Password : 'VARCHAR(255)',
2166
cd42c3c7173a MySQL and Postgresql use BOOL/BOOLEAN for Boolean types
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
130 hyperdb.Boolean : 'BOOL',
2099
3837257ca9a5 *** empty log message ***
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
131 hyperdb.Number : 'REAL',
5067
e424987d294a Add support for an integer type to join the existing number type.
John Rouillard <rouilj@ieee.org>
parents: 4887
diff changeset
132 hyperdb.Integer : 'INTEGER',
2099
3837257ca9a5 *** empty log message ***
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
133 }
3837257ca9a5 *** empty log message ***
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
134
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
135 hyperdb_to_sql_value = {
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
136 hyperdb.String : str,
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
137 # no fractional seconds for MySQL
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
138 hyperdb.Date : lambda x: x.formal(sep=' '),
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
139 hyperdb.Link : int,
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2166
diff changeset
140 hyperdb.Interval : str,
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
141 hyperdb.Password : str,
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
142 hyperdb.Boolean : int,
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
143 hyperdb.Number : lambda x: x,
5067
e424987d294a Add support for an integer type to join the existing number type.
John Rouillard <rouilj@ieee.org>
parents: 4887
diff changeset
144 hyperdb.Integer : int,
2244
ac4f295499a4 fixed journal marshalling in RDBMS backends [SF#943627]
Richard Jones <richard@users.sourceforge.net>
parents: 2240
diff changeset
145 hyperdb.Multilink : lambda x: x, # used in journal marshalling
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
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parents: 2093
diff changeset
146 }
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
147
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c091cacdc505 Finished implementation of session and one-time-key stores for RDBMS backends.
Richard Jones <richard@users.sourceforge.net>
parents: 2077
diff changeset
148 def sql_open_connection(self):
2693
59ea85d47d34 add dbnamestr argument to connection_dict...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2679
diff changeset
149 kwargs = connection_dict(self.config, 'db')
4059
ef0b4396888a Enhance and simplify logging.
Stefan Seefeld <stefan@seefeld.name>
parents: 3969
diff changeset
150 self.log_info('open database %r'%(kwargs['db'],))
2082
c091cacdc505 Finished implementation of session and one-time-key stores for RDBMS backends.
Richard Jones <richard@users.sourceforge.net>
parents: 2077
diff changeset
151 try:
2634
f47ca4541770 Both RDBMS backends now use the same config.ini section, [rdbms].
Richard Jones <richard@users.sourceforge.net>
parents: 2617
diff changeset
152 conn = MySQLdb.connect(**kwargs)
2082
c091cacdc505 Finished implementation of session and one-time-key stores for RDBMS backends.
Richard Jones <richard@users.sourceforge.net>
parents: 2077
diff changeset
153 except MySQLdb.OperationalError, message:
5075
04a8022ae0de Remove 'import *' statement from dist/backends/back_mysql.py
John Kristensen <john@jerrykan.com>
parents: 5067
diff changeset
154 raise hyperdb.DatabaseError, message
2082
c091cacdc505 Finished implementation of session and one-time-key stores for RDBMS backends.
Richard Jones <richard@users.sourceforge.net>
parents: 2077
diff changeset
155 cursor = conn.cursor()
3216
27aba1d8fccc merge from maint-0-8
Richard Jones <richard@users.sourceforge.net>
parents: 3155
diff changeset
156 cursor.execute("SET AUTOCOMMIT=0")
4887
05c857e5dbed New rdbms configuration option 'isolation_level'
Ralf Schlatterbeck <rsc@runtux.com>
parents: 4466
diff changeset
157 lvl = isolation_levels [self.config.RDBMS_ISOLATION_LEVEL]
05c857e5dbed New rdbms configuration option 'isolation_level'
Ralf Schlatterbeck <rsc@runtux.com>
parents: 4466
diff changeset
158 cursor.execute("SET SESSION TRANSACTION ISOLATION LEVEL %s" % lvl)
2456
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
159 cursor.execute("START TRANSACTION")
2082
c091cacdc505 Finished implementation of session and one-time-key stores for RDBMS backends.
Richard Jones <richard@users.sourceforge.net>
parents: 2077
diff changeset
160 return (conn, cursor)
2679
b3f0b7b9d20d for MySQL connection, password argument is called 'passwd'.
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2634
diff changeset
161
2082
c091cacdc505 Finished implementation of session and one-time-key stores for RDBMS backends.
Richard Jones <richard@users.sourceforge.net>
parents: 2077
diff changeset
162 def open_connection(self):
2075
b1704ba7be41 make mysql / postgresql work again. beginnings of otk/session store in rdbmses
Richard Jones <richard@users.sourceforge.net>
parents: 2073
diff changeset
163 # make sure the database actually exists
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Richard Jones <richard@users.sourceforge.net>
parents: 2073
diff changeset
164 if not db_exists(self.config):
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Richard Jones <richard@users.sourceforge.net>
parents: 2073
diff changeset
165 db_create(self.config)
b1704ba7be41 make mysql / postgresql work again. beginnings of otk/session store in rdbmses
Richard Jones <richard@users.sourceforge.net>
parents: 2073
diff changeset
166
2082
c091cacdc505 Finished implementation of session and one-time-key stores for RDBMS backends.
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parents: 2077
diff changeset
167 self.conn, self.cursor = self.sql_open_connection()
1375
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
168
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
169 try:
2073
261c2e6ceb1e *** empty log message ***
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
170 self.load_dbschema()
1433
8429095241d7 mysql tests will not be run if there is no chance of passing.
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1415
diff changeset
171 except MySQLdb.OperationalError, message:
8429095241d7 mysql tests will not be run if there is no chance of passing.
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1415
diff changeset
172 if message[0] != ER.NO_DB_ERROR:
8429095241d7 mysql tests will not be run if there is no chance of passing.
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1415
diff changeset
173 raise
1375
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
174 except MySQLdb.ProgrammingError, message:
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
175 if message[0] != ER.NO_SUCH_TABLE:
5075
04a8022ae0de Remove 'import *' statement from dist/backends/back_mysql.py
John Kristensen <john@jerrykan.com>
parents: 5067
diff changeset
176 raise hyperdb.DatabaseError, message
2075
b1704ba7be41 make mysql / postgresql work again. beginnings of otk/session store in rdbmses
Richard Jones <richard@users.sourceforge.net>
parents: 2073
diff changeset
177 self.init_dbschema()
3929
a472391156ae mysql table creation syntax change
Justus Pendleton <jpend@users.sourceforge.net>
parents: 3858
diff changeset
178 self.sql("CREATE TABLE `schema` (`schema` TEXT) ENGINE=%s"%
1839
06f5b36b201b Fix a couple of failures in mysql backend unit tests.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
179 self.mysql_backend)
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diff changeset
180 self.sql('''CREATE TABLE ids (name VARCHAR(255),
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a472391156ae mysql table creation syntax change
Justus Pendleton <jpend@users.sourceforge.net>
parents: 3858
diff changeset
181 num INTEGER) ENGINE=%s'''%self.mysql_backend)
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parents: 2508
diff changeset
182 self.sql('create index ids_name_idx on ids(name)')
2073
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Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
183 self.create_version_2_tables()
261c2e6ceb1e *** empty log message ***
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
184
3458
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
185 def load_dbschema(self):
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parents: 3457
diff changeset
186 ''' Load the schema definition that the database currently implements
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parents: 3457
diff changeset
187 '''
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
188 self.cursor.execute('select `schema` from `schema`')
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
189 schema = self.cursor.fetchone()
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
190 if schema:
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
191 self.database_schema = eval(schema[0])
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
192 else:
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
193 self.database_schema = {}
931dc7ed25c7 handle "schema" being reserved word in MySQL 5+ [SF#1397569]
Richard Jones <richard@users.sourceforge.net>
parents: 3457
diff changeset
194
3603
f7399e2aa610 escape *all* uses of "schema" in mysql backend [SF#1472120]
Richard Jones <richard@users.sourceforge.net>
parents: 3585
diff changeset
195 def save_dbschema(self):
f7399e2aa610 escape *all* uses of "schema" in mysql backend [SF#1472120]
Richard Jones <richard@users.sourceforge.net>
parents: 3585
diff changeset
196 ''' Save the schema definition that the database currently implements
f7399e2aa610 escape *all* uses of "schema" in mysql backend [SF#1472120]
Richard Jones <richard@users.sourceforge.net>
parents: 3585
diff changeset
197 '''
f7399e2aa610 escape *all* uses of "schema" in mysql backend [SF#1472120]
Richard Jones <richard@users.sourceforge.net>
parents: 3585
diff changeset
198 s = repr(self.database_schema)
f7399e2aa610 escape *all* uses of "schema" in mysql backend [SF#1472120]
Richard Jones <richard@users.sourceforge.net>
parents: 3585
diff changeset
199 self.sql('delete from `schema`')
f7399e2aa610 escape *all* uses of "schema" in mysql backend [SF#1472120]
Richard Jones <richard@users.sourceforge.net>
parents: 3585
diff changeset
200 self.sql('insert into `schema` values (%s)', (s,))
f7399e2aa610 escape *all* uses of "schema" in mysql backend [SF#1472120]
Richard Jones <richard@users.sourceforge.net>
parents: 3585
diff changeset
201
2073
261c2e6ceb1e *** empty log message ***
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
202 def create_version_2_tables(self):
2093
3f6024ab2c7a That's the last of the RDBMS migration steps done! Yay!
Richard Jones <richard@users.sourceforge.net>
parents: 2089
diff changeset
203 # OTK store
2514
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Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
204 self.sql('''CREATE TABLE otks (otk_key VARCHAR(255),
2721
1cd01cf106e1 extend OTK and session table value cols to TEXT [SF#1031271]
Richard Jones <richard@users.sourceforge.net>
parents: 2720
diff changeset
205 otk_value TEXT, otk_time FLOAT(20))
3929
a472391156ae mysql table creation syntax change
Justus Pendleton <jpend@users.sourceforge.net>
parents: 3858
diff changeset
206 ENGINE=%s'''%self.mysql_backend)
2514
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Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
207 self.sql('CREATE INDEX otks_key_idx ON otks(otk_key)')
2093
3f6024ab2c7a That's the last of the RDBMS migration steps done! Yay!
Richard Jones <richard@users.sourceforge.net>
parents: 2089
diff changeset
208
3f6024ab2c7a That's the last of the RDBMS migration steps done! Yay!
Richard Jones <richard@users.sourceforge.net>
parents: 2089
diff changeset
209 # Sessions store
2727
93e2e5b55a3c new Interval props weren't created properly in rdbms
Richard Jones <richard@users.sourceforge.net>
parents: 2721
diff changeset
210 self.sql('''CREATE TABLE sessions (session_key VARCHAR(255),
93e2e5b55a3c new Interval props weren't created properly in rdbms
Richard Jones <richard@users.sourceforge.net>
parents: 2721
diff changeset
211 session_time FLOAT(20), session_value TEXT)
3929
a472391156ae mysql table creation syntax change
Justus Pendleton <jpend@users.sourceforge.net>
parents: 3858
diff changeset
212 ENGINE=%s'''%self.mysql_backend)
2514
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Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
213 self.sql('''CREATE INDEX sessions_key_idx ON
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
214 sessions(session_key)''')
1839
06f5b36b201b Fix a couple of failures in mysql backend unit tests.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
215
2093
3f6024ab2c7a That's the last of the RDBMS migration steps done! Yay!
Richard Jones <richard@users.sourceforge.net>
parents: 2089
diff changeset
216 # full-text indexing store
2514
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Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
217 self.sql('''CREATE TABLE __textids (_class VARCHAR(255),
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
218 _itemid VARCHAR(255), _prop VARCHAR(255), _textid INT)
3929
a472391156ae mysql table creation syntax change
Justus Pendleton <jpend@users.sourceforge.net>
parents: 3858
diff changeset
219 ENGINE=%s'''%self.mysql_backend)
2514
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Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
220 self.sql('''CREATE TABLE __words (_word VARCHAR(30),
3929
a472391156ae mysql table creation syntax change
Justus Pendleton <jpend@users.sourceforge.net>
parents: 3858
diff changeset
221 _textid INT) ENGINE=%s'''%self.mysql_backend)
2514
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Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
222 self.sql('CREATE INDEX words_word_ids ON __words(_word)')
3858
bb30bbfc7cdd Indexing fixes.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3687
diff changeset
223 self.sql('CREATE INDEX words_by_id ON __words (_textid)')
bb30bbfc7cdd Indexing fixes.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3687
diff changeset
224 self.sql('CREATE UNIQUE INDEX __textids_by_props ON '
bb30bbfc7cdd Indexing fixes.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3687
diff changeset
225 '__textids (_class, _itemid, _prop)')
2093
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Richard Jones <richard@users.sourceforge.net>
parents: 2089
diff changeset
226 sql = 'insert into ids (name, num) values (%s,%s)'%(self.arg, self.arg)
2514
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parents: 2508
diff changeset
227 self.sql(sql, ('__textids', 1))
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Richard Jones <richard@users.sourceforge.net>
parents: 2089
diff changeset
228
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2166
diff changeset
229 def add_new_columns_v2(self):
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
230 '''While we're adding the actor column, we need to update the
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
231 tables to have the correct datatypes.'''
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
232 for klass in self.classes.values():
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
233 cn = klass.classname
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
234 properties = klass.getprops()
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
235 old_spec = self.database_schema['tables'][cn]
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
236
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
237 # figure the non-Multilink properties to copy over
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
238 propnames = ['activity', 'creation', 'creator']
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
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parents: 2093
diff changeset
239
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
240 # figure actions based on data type
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
241 for name, s_prop in old_spec[1]:
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
242 # s_prop is a repr() string of a hyperdb type object
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
243 if s_prop.find('Multilink') == -1:
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
244 if properties.has_key(name):
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
245 propnames.append(name)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
246 continue
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
247 tn = '%s_%s'%(cn, name)
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
248
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
249 if properties.has_key(name):
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
250 # grabe the current values
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
251 sql = 'select linkid, nodeid from %s'%tn
2514
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Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
252 self.sql(sql)
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
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parents: 2099
diff changeset
253 rows = self.cursor.fetchall()
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
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parents: 2093
diff changeset
254
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
255 # drop the old table
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
256 self.drop_multilink_table_indexes(cn, name)
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
257 sql = 'drop table %s'%tn
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258 self.sql(sql)
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259
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diff changeset
260 if properties.has_key(name):
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diff changeset
261 # re-create and populate the new table
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262 self.create_multilink_table(klass, name)
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263 sql = '''insert into %s (linkid, nodeid) values
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264 (%s, %s)'''%(tn, self.arg, self.arg)
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265 for linkid, nodeid in rows:
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266 self.sql(sql, (int(linkid), int(nodeid)))
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267
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diff changeset
268 # figure the column names to fetch
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269 fetch = ['_%s'%name for name in propnames]
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270
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271 # select the data out of the old table
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272 fetch.append('id')
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273 fetch.append('__retired__')
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274 fetchcols = ','.join(fetch)
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275 sql = 'select %s from _%s'%(fetchcols, cn)
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276 self.sql(sql)
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277
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diff changeset
278 # unserialise the old data
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279 olddata = []
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280 propnames = propnames + ['id', '__retired__']
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diff changeset
281 cols = []
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282 first = 1
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diff changeset
283 for entry in self.cursor.fetchall():
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284 l = []
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285 olddata.append(l)
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diff changeset
286 for i in range(len(propnames)):
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287 name = propnames[i]
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diff changeset
288 v = entry[i]
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289
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290 if name in ('id', '__retired__'):
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diff changeset
291 if first:
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diff changeset
292 cols.append(name)
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293 l.append(int(v))
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294 continue
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diff changeset
295 if first:
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296 cols.append('_' + name)
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diff changeset
297 prop = properties[name]
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diff changeset
298 if isinstance(prop, hyperdb.Date) and v is not None:
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299 v = date.Date(v)
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diff changeset
300 elif isinstance(prop, hyperdb.Interval) and v is not None:
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diff changeset
301 v = date.Interval(v)
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diff changeset
302 elif isinstance(prop, hyperdb.Password) and v is not None:
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303 v = password.Password(encrypted=v)
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diff changeset
304 elif isinstance(prop, hyperdb.Integer) and v is not None:
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John Rouillard <rouilj@ieee.org>
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diff changeset
305 v = int(v)
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diff changeset
306 elif (isinstance(prop, hyperdb.Boolean) or
04a8022ae0de Remove 'import *' statement from dist/backends/back_mysql.py
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diff changeset
307 isinstance(prop, hyperdb.Number)) and v is not None:
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diff changeset
308 v = float(v)
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309
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diff changeset
310 # convert to new MySQL data type
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diff changeset
311 prop = properties[name]
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diff changeset
312 if v is not None:
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diff changeset
313 e = self.to_sql_value(prop.__class__)(v)
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diff changeset
314 else:
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diff changeset
315 e = None
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diff changeset
316 l.append(e)
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317
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diff changeset
318 # Intervals store the seconds value too
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diff changeset
319 if isinstance(prop, hyperdb.Interval):
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diff changeset
320 if first:
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
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diff changeset
321 cols.append('__' + name + '_int__')
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diff changeset
322 if v is not None:
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diff changeset
323 l.append(v.as_seconds())
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diff changeset
324 else:
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diff changeset
325 l.append(e)
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diff changeset
326 first = 0
2100
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diff changeset
327
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diff changeset
328 self.drop_class_table_indexes(cn, old_spec[0])
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diff changeset
329
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330 # drop the old table
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diff changeset
331 self.sql('drop table _%s'%cn)
2098
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diff changeset
332
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diff changeset
333 # create the new table
2100
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diff changeset
334 self.create_class_table(klass)
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diff changeset
335
2100
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diff changeset
336 # do the insert of the old data
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diff changeset
337 args = ','.join([self.arg for x in cols])
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diff changeset
338 cols = ','.join(cols)
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diff changeset
339 sql = 'insert into _%s (%s) values (%s)'%(cn, cols, args)
2098
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diff changeset
340 for entry in olddata:
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diff changeset
341 self.sql(sql, tuple(entry))
2100
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diff changeset
342
2244
ac4f295499a4 fixed journal marshalling in RDBMS backends [SF#943627]
Richard Jones <richard@users.sourceforge.net>
parents: 2240
diff changeset
343 # now load up the old journal data to migrate it
2100
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diff changeset
344 cols = ','.join('nodeid date tag action params'.split())
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diff changeset
345 sql = 'select %s from %s__journal'%(cols, cn)
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diff changeset
346 self.sql(sql)
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diff changeset
347
2244
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diff changeset
348 # data conversions
2100
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diff changeset
349 olddata = []
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diff changeset
350 for nodeid, journaldate, journaltag, action, params in \
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diff changeset
351 self.cursor.fetchall():
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diff changeset
352 #nodeid = int(nodeid)
3140
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Richard Jones <richard@users.sourceforge.net>
parents: 3088
diff changeset
353 journaldate = date.Date(journaldate)
2431
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Richard Jones <richard@users.sourceforge.net>
parents: 2424
diff changeset
354 #params = eval(params)
2100
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diff changeset
355 olddata.append((nodeid, journaldate, journaltag, action,
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diff changeset
356 params))
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diff changeset
357
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diff changeset
358 # drop journal table and indexes
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diff changeset
359 self.drop_journal_table_indexes(cn)
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
360 sql = 'drop table %s__journal'%cn
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diff changeset
361 self.sql(sql)
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diff changeset
362
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
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diff changeset
363 # re-create journal table
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
364 self.create_journal_table(klass)
4060
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Stefan Seefeld <stefan@seefeld.name>
parents: 4059
diff changeset
365 dc = self.to_sql_value(hyperdb.Date)
2100
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Richard Jones <richard@users.sourceforge.net>
parents: 2099
diff changeset
366 for nodeid, journaldate, journaltag, action, params in olddata:
3140
2487b070043b slightly better fix
Richard Jones <richard@users.sourceforge.net>
parents: 3088
diff changeset
367 self.save_journal(cn, cols, nodeid, dc(journaldate),
2100
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parents: 2099
diff changeset
368 journaltag, action, params)
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diff changeset
369
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diff changeset
370 # make sure the normal schema update code doesn't try to
2679
b3f0b7b9d20d for MySQL connection, password argument is called 'passwd'.
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2634
diff changeset
371 # change things
2100
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
372 self.database_schema['tables'][cn] = klass.schema()
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
373
2413
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Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
374 def fix_version_2_tables(self):
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
375 # Convert journal date column to TIMESTAMP, params column to TEXT
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
376 self._convert_journal_tables()
7d0bb6601809 fix some column datatypes in postgresql and mysql
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parents: 2379
diff changeset
377
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
378 # Convert all String properties to TEXT
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
379 self._convert_string_properties()
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
380
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parents:
diff changeset
381 def __repr__(self):
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
382 return '<myroundsql 0x%x>'%id(self)
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
383
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
384 def sql_fetchone(self):
faf93d3fbf2f added mysql backend
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parents:
diff changeset
385 return self.cursor.fetchone()
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
386
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
387 def sql_fetchall(self):
faf93d3fbf2f added mysql backend
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parents:
diff changeset
388 return self.cursor.fetchall()
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
389
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
390 def sql_index_exists(self, table_name, index_name):
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
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parents: 2508
diff changeset
391 self.sql('show index from %s'%table_name)
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
392 for index in self.cursor.fetchall():
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
393 if index[2] == index_name:
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
394 return 1
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
395 return 0
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
396
2424
74474ec41050 argh! backwards compat
Richard Jones <richard@users.sourceforge.net>
parents: 2413
diff changeset
397 def create_class_table(self, spec, create_sequence=1):
1375
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
398 cols, mls = self.determine_columns(spec.properties.items())
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
399
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
400 # add on our special columns
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
401 cols.append(('id', 'INTEGER PRIMARY KEY'))
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
402 cols.append(('__retired__', 'INTEGER DEFAULT 0'))
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
403
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
404 # create the base table
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
405 scols = ','.join(['%s %s'%x for x in cols])
3934
8c75e8fce5dc Fix a couple more old instances of "type" instead of "ENGINE" for mysql backend.
Richard Jones <richard@users.sourceforge.net>
parents: 3929
diff changeset
406 sql = 'create table _%s (%s) ENGINE=%s'%(spec.classname, scols,
1839
06f5b36b201b Fix a couple of failures in mysql backend unit tests.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
407 self.mysql_backend)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
408 self.sql(sql)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
409
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
410 self.create_class_table_indexes(spec)
1375
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
411 return cols, mls
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
412
3457
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
413 def create_class_table_indexes(self, spec):
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
414 ''' create the class table for the given spec
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
415 '''
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
416 # create __retired__ index
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
417 index_sql2 = 'create index _%s_retired_idx on _%s(__retired__)'%(
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
418 spec.classname, spec.classname)
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
419 self.sql(index_sql2)
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
420
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
421 # create index for key property
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
422 if spec.key:
5075
04a8022ae0de Remove 'import *' statement from dist/backends/back_mysql.py
John Kristensen <john@jerrykan.com>
parents: 5067
diff changeset
423 if isinstance(spec.properties[spec.key], hyperdb.String):
3457
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
424 idx = spec.key + '(255)'
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
425 else:
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
426 idx = spec.key
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
427 index_sql3 = 'create index _%s_%s_idx on _%s(_%s)'%(
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
428 spec.classname, spec.key,
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
429 spec.classname, idx)
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
430 self.sql(index_sql3)
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
431
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
432 # TODO: create indexes on (selected?) Link property columns, as
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
433 # they're more likely to be used for lookup
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
434
3969
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
435 def add_class_key_required_unique_constraint(self, cn, key):
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
436 # mysql requires sizes on TEXT indexes
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
437 prop = self.classes[cn].getprops()[key]
5075
04a8022ae0de Remove 'import *' statement from dist/backends/back_mysql.py
John Kristensen <john@jerrykan.com>
parents: 5067
diff changeset
438 if isinstance(prop, hyperdb.String):
3969
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
439 sql = '''create unique index _%s_key_retired_idx
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
440 on _%s(__retired__, _%s(255))'''%(cn, cn, key)
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
441 else:
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
442 sql = '''create unique index _%s_key_retired_idx
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
443 on _%s(__retired__, _%s)'''%(cn, cn, key)
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
444 self.sql(sql)
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
445
3457
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
446 def create_class_table_key_index(self, cn, key):
3969
905faf52a51f fix mysql breakage in 1.4.2
Richard Jones <richard@users.sourceforge.net>
parents: 3934
diff changeset
447 # mysql requires sizes on TEXT indexes
3457
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
448 prop = self.classes[cn].getprops()[key]
5075
04a8022ae0de Remove 'import *' statement from dist/backends/back_mysql.py
John Kristensen <john@jerrykan.com>
parents: 5067
diff changeset
449 if isinstance(prop, hyperdb.String):
3457
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
450 sql = 'create index _%s_%s_idx on _%s(_%s(255))'%(cn, key, cn, key)
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
451 else:
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
452 sql = 'create index _%s_%s_idx on _%s(_%s)'%(cn, key, cn, key)
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
453 self.sql(sql)
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
454
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
455 def drop_class_table_indexes(self, cn, key):
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
456 # drop the old table indexes first
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
457 l = ['_%s_id_idx'%cn, '_%s_retired_idx'%cn]
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
458 if key:
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
459 l.append('_%s_%s_idx'%(cn, key))
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
460
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
461 table_name = '_%s'%cn
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
462 for index_name in l:
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
463 if not self.sql_index_exists(table_name, index_name):
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
464 continue
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
465 index_sql = 'drop index %s on %s'%(index_name, table_name)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
466 self.sql(index_sql)
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
467
1375
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
468 def create_journal_table(self, spec):
2679
b3f0b7b9d20d for MySQL connection, password argument is called 'passwd'.
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2634
diff changeset
469 ''' create the journal table for a class given the spec and
2413
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
470 already-determined cols
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
471 '''
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
472 # journal table
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
473 cols = ','.join(['%s varchar'%x
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
474 for x in 'nodeid date tag action params'.split()])
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
475 sql = '''create table %s__journal (
2413
7d0bb6601809 fix some column datatypes in postgresql and mysql
Richard Jones <richard@users.sourceforge.net>
parents: 2379
diff changeset
476 nodeid integer, date datetime, tag varchar(255),
3934
8c75e8fce5dc Fix a couple more old instances of "type" instead of "ENGINE" for mysql backend.
Richard Jones <richard@users.sourceforge.net>
parents: 3929
diff changeset
477 action varchar(255), params text) ENGINE=%s'''%(
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
478 spec.classname, self.mysql_backend)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
479 self.sql(sql)
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
480 self.create_journal_table_indexes(spec)
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
481
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
482 def drop_journal_table_indexes(self, classname):
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
483 index_name = '%s_journ_idx'%classname
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
484 if not self.sql_index_exists('%s__journal'%classname, index_name):
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
485 return
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
486 index_sql = 'drop index %s on %s__journal'%(index_name, classname)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
487 self.sql(index_sql)
1375
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
488
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
489 def create_multilink_table(self, spec, ml):
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
490 sql = '''CREATE TABLE `%s_%s` (linkid VARCHAR(255),
3929
a472391156ae mysql table creation syntax change
Justus Pendleton <jpend@users.sourceforge.net>
parents: 3858
diff changeset
491 nodeid VARCHAR(255)) ENGINE=%s'''%(spec.classname, ml,
1839
06f5b36b201b Fix a couple of failures in mysql backend unit tests.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
492 self.mysql_backend)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
493 self.sql(sql)
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
494 self.create_multilink_table_indexes(spec, ml)
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
495
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
496 def drop_multilink_table_indexes(self, classname, ml):
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
497 l = [
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
498 '%s_%s_l_idx'%(classname, ml),
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
499 '%s_%s_n_idx'%(classname, ml)
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
500 ]
2089
93f03c6714d8 A few big changes in this commit:
Richard Jones <richard@users.sourceforge.net>
parents: 2082
diff changeset
501 table_name = '%s_%s'%(classname, ml)
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
502 for index_name in l:
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
503 if not self.sql_index_exists(table_name, index_name):
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1873
diff changeset
504 continue
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
505 sql = 'drop index %s on %s'%(index_name, table_name)
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
506 self.sql(sql)
1375
faf93d3fbf2f added mysql backend
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
507
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
508 def drop_class_table_key_index(self, cn, key):
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
509 table_name = '_%s'%cn
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
510 index_name = '_%s_%s_idx'%(cn, key)
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
511 if not self.sql_index_exists(table_name, index_name):
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
512 return
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
513 sql = 'drop index %s on %s'%(index_name, table_name)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
514 self.sql(sql)
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
515
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
516 # old-skool id generation
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
517 def newid(self, classname):
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
518 ''' Generate a new id for the given class
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
519 '''
2717
ca2ee58c8310 use row locking in MySQL newid() [SF#1034211]
Richard Jones <richard@users.sourceforge.net>
parents: 2693
diff changeset
520 # get the next ID - "FOR UPDATE" will lock the row for us
ca2ee58c8310 use row locking in MySQL newid() [SF#1034211]
Richard Jones <richard@users.sourceforge.net>
parents: 2693
diff changeset
521 sql = 'select num from ids where name=%s FOR UPDATE'%self.arg
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
522 self.sql(sql, (classname, ))
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
523 newid = int(self.cursor.fetchone()[0])
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
524
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
525 # update the counter
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
526 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
527 vals = (int(newid)+1, classname)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
528 self.sql(sql, vals)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
529
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
530 # return as string
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
531 return str(newid)
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
532
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
533 def setid(self, classname, setid):
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
534 ''' Set the id counter: used during import of database
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
535
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
536 We add one to make it behave like the seqeunces in postgres.
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
537 '''
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
538 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
539 vals = (int(setid)+1, classname)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
540 self.sql(sql, vals)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
541
3310
3518d1ffd940 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3216
diff changeset
542 def clear(self):
3518d1ffd940 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3216
diff changeset
543 rdbms_common.Database.clear(self)
3518d1ffd940 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3216
diff changeset
544
3518d1ffd940 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3216
diff changeset
545 # set the id counters to 0 (setid adds one) so we start at 1
3518d1ffd940 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3216
diff changeset
546 for cn in self.classes.keys():
3518d1ffd940 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3216
diff changeset
547 self.setid(cn, 0)
3518d1ffd940 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3216
diff changeset
548
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
549 def create_class(self, spec):
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
550 rdbms_common.Database.create_class(self, spec)
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
551 sql = 'insert into ids (name, num) values (%s, %s)'
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
552 vals = (spec.classname, 1)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
553 self.sql(sql, vals)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2093
diff changeset
554
3687
ff9f4ca42454 Postgres backend allows transaction collisions to be ignored when...
Richard Jones <richard@users.sourceforge.net>
parents: 3635
diff changeset
555 def sql_commit(self, fail_ok=False):
2456
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
556 ''' Actually commit to the database.
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
557 '''
4059
ef0b4396888a Enhance and simplify logging.
Stefan Seefeld <stefan@seefeld.name>
parents: 3969
diff changeset
558 self.log_info('commit')
3687
ff9f4ca42454 Postgres backend allows transaction collisions to be ignored when...
Richard Jones <richard@users.sourceforge.net>
parents: 3635
diff changeset
559
ff9f4ca42454 Postgres backend allows transaction collisions to be ignored when...
Richard Jones <richard@users.sourceforge.net>
parents: 3635
diff changeset
560 # MySQL commits don't seem to ever fail, the latest update winning.
ff9f4ca42454 Postgres backend allows transaction collisions to be ignored when...
Richard Jones <richard@users.sourceforge.net>
parents: 3635
diff changeset
561 # makes you wonder why they have transactions...
2456
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
562 self.conn.commit()
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
563
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
564 # open a new cursor for subsequent work
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
565 self.cursor = self.conn.cursor()
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
566
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
567 # make sure we're in a new transaction and not autocommitting
3216
27aba1d8fccc merge from maint-0-8
Richard Jones <richard@users.sourceforge.net>
parents: 3155
diff changeset
568 self.sql("SET AUTOCOMMIT=0")
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2508
diff changeset
569 self.sql("START TRANSACTION")
2456
1cd69db95b23 fixed some more mysql 0.6->0.7 upgrade bugs [SF#950410]
Richard Jones <richard@users.sourceforge.net>
parents: 2431
diff changeset
570
3457
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
571 def sql_close(self):
4059
ef0b4396888a Enhance and simplify logging.
Stefan Seefeld <stefan@seefeld.name>
parents: 3969
diff changeset
572 self.log_info('close')
3457
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
573 try:
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
574 self.conn.close()
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
575 except MySQLdb.ProgrammingError, message:
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
576 if str(message) != 'closing a closed connection':
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
577 raise
88f0a5030404 Fix invalid date spec in db tests
Richard Jones <richard@users.sourceforge.net>
parents: 3455
diff changeset
578
1415
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
579 class MysqlClass:
4466
f1fe6fd0aa61 Multilinks can be filtered by combining elements with AND, OR and NOT now.
Bernhard Reiter <Bernhard.Reiter@intevation.de>
parents: 4285
diff changeset
580
f1fe6fd0aa61 Multilinks can be filtered by combining elements with AND, OR and NOT now.
Bernhard Reiter <Bernhard.Reiter@intevation.de>
parents: 4285
diff changeset
581 def supports_subselects(self):
f1fe6fd0aa61 Multilinks can be filtered by combining elements with AND, OR and NOT now.
Bernhard Reiter <Bernhard.Reiter@intevation.de>
parents: 4285
diff changeset
582 # TODO: AFAIK its version dependent for MySQL
f1fe6fd0aa61 Multilinks can be filtered by combining elements with AND, OR and NOT now.
Bernhard Reiter <Bernhard.Reiter@intevation.de>
parents: 4285
diff changeset
583 return False
f1fe6fd0aa61 Multilinks can be filtered by combining elements with AND, OR and NOT now.
Bernhard Reiter <Bernhard.Reiter@intevation.de>
parents: 4285
diff changeset
584
3635
53987aa153d2 Transitive-property support.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3633
diff changeset
585 def _subselect(self, classname, multilink_table):
3633
a292054b4393 The whole filter method was replicated in back_mysql.py from rdbms_common.py
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3603
diff changeset
586 ''' "I can't believe it's not a toy RDBMS"
a292054b4393 The whole filter method was replicated in back_mysql.py from rdbms_common.py
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3603
diff changeset
587 see, even toy RDBMSes like gadfly and sqlite can do sub-selects...
1415
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
588 '''
3635
53987aa153d2 Transitive-property support.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3633
diff changeset
589 self.db.sql('select nodeid from %s'%multilink_table)
3633
a292054b4393 The whole filter method was replicated in back_mysql.py from rdbms_common.py
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3603
diff changeset
590 s = ','.join([x[0] for x in self.db.sql_fetchall()])
3635
53987aa153d2 Transitive-property support.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3633
diff changeset
591 return '_%s.id not in (%s)'%(classname, s)
1415
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
592
4285
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
593 def create_inner(self, **propvalues):
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
594 try:
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
595 return rdbms_common.Class.create_inner(self, **propvalues)
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
596 except MySQLdb.IntegrityError, e:
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
597 self._handle_integrity_error(e, propvalues)
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
598
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
599 def set_inner(self, nodeid, **propvalues):
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
600 try:
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
601 return rdbms_common.Class.set_inner(self, nodeid,
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
602 **propvalues)
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
603 except MySQLdb.IntegrityError, e:
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
604 self._handle_integrity_error(e, propvalues)
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
605
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
606 def _handle_integrity_error(self, e, propvalues):
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
607 ''' Handle a MySQL IntegrityError.
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
608
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
609 If the error is recognized, then it may be converted into an
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
610 alternative exception. Otherwise, it is raised unchanged from
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
611 this function.'''
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
612
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
613 # There are checks in create_inner/set_inner to see if a node
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
614 # is being created with the same key as an existing node.
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
615 # But, there is a race condition -- we may pass those checks,
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
616 # only to find out that a parallel session has created the
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
617 # node by by the time we actually issue the SQL command to
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
618 # create the node. Fortunately, MySQL gives us a unique error
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
619 # code for this situation, so we can detect it here and handle
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
620 # it appropriately.
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
621 #
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
622 # The details of the race condition are as follows, where
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
623 # "X" is a classname, and the term "thread" is meant to
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
624 # refer generically to both threads and processes:
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
625 #
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
626 # Thread A Thread B
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
627 # -------- --------
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
628 # read table for X
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
629 # create new X object
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
630 # commit
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
631 # create new X object
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
632 #
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
633 # In Thread B, the check in create_inner does not notice that
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
634 # the new X object is a duplicate of that committed in Thread
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
635 # A because MySQL's default "consistent nonlocking read"
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
636 # behavior means that Thread B sees a snapshot of the database
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
637 # at the point at which its transaction began -- which was
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
638 # before Thread A created the object. However, the attempt
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
639 # to *write* to the table for X, creating a duplicate entry,
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
640 # triggers an error at the point of the write.
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
641 #
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
642 # If both A and B's transaction begins with creating a new X
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
643 # object, then this bug cannot occur because creating the
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
644 # object requires getting a new ID, and newid() locks the id
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
645 # table until the transaction is committed or rolledback. So,
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
646 # B will block until A's commit is complete, and will not
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
647 # actually get its snapshot until A's transaction completes.
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
648 # But, if the transaction has begun prior to calling newid,
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
649 # then the snapshot has already been established.
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
650 if e[0] == ER.DUP_ENTRY:
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
651 key = propvalues[self.key]
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
652 raise ValueError, 'node with key "%s" exists' % key
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
653 # We don't know what this exception is; reraise it.
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
654 raise
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
655
783053bd466c Fix race condition.
Stefan Seefeld <stefan@seefeld.name>
parents: 4085
diff changeset
656
1415
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
657 class Class(MysqlClass, rdbms_common.Class):
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
658 pass
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
659 class IssueClass(MysqlClass, rdbms_common.IssueClass):
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
660 pass
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
661 class FileClass(MysqlClass, rdbms_common.FileClass):
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
662 pass
6883852e9b15 mysql backend passes all tests (at last!)
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1375
diff changeset
663
2679
b3f0b7b9d20d for MySQL connection, password argument is called 'passwd'.
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2634
diff changeset
664 # vim: set et sts=4 sw=4 :
Roundup Issue Tracker: http://roundup-tracker.org/