Create a backup of the current database to an sqlite database stored in
filename.
The backupmechanism always considers the schema of the backed up database
as the master, and never that of the backup. This means that when a backup
is made, the backup file is first removed, and then filled with the tables
from the the database to backup. When a restore is done, the schema of the
database is not touched, but the tables are emptied and the data from the
backup is copied into the existing schema.
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__init__(self,
filename)
Backup and restore to a local file using it as an sqlite database |
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backup_table_filter(self,
from_table)
Method used to filter which tables should be backed up, overwrite this method
for taking into account specific schema issues. |
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restore_table_filter(self,
from_table)
Method used to filter which tables should be restored, overwrite this method
for taking into account specific schema issues. restore_table_filter is different
from backup_table_filter, since we might want to store data in the backup that
should not be restored, like schema version information. |
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prepare_schema_for_restore(self,
from_engine,
to_engine)
This method will be called before the actual restore starts. It allows bringing
the schema at the same revision as the backed up data. |
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update_schema_after_restore(self,
from_engine,
to_engine)
This method will be called after the restore has been done. It allows bringing
the schema at the revision the application expects. |
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backup(self)
Generator function that yields tuples :
(numer_of_steps_completed, total_number_of_steps, description_of_current_step)
while performing a backup. |
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restore(self)
Generator function that yields tuples :
(numer_of_steps_completed, total_number_of_steps, description_of_current_step)
while performing a restore. |
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delete_table_data(self,
to_table)
This method might be subclassed to turn off/on foreign key checks |
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copy_table_data(self,
from_table,
to_table) |
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Inherited from object :
__delattr__ ,
__format__ ,
__getattribute__ ,
__hash__ ,
__new__ ,
__reduce__ ,
__reduce_ex__ ,
__repr__ ,
__setattr__ ,
__sizeof__ ,
__str__ ,
__subclasshook__
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