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Only Vacuum changed databases

This commit is contained in:
Tim Bentley 2010-10-28 18:02:28 +01:00
parent 7dcd7f3011
commit 5d9ef61e2c
1 changed files with 7 additions and 2 deletions
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9
openlp/core/lib/db.py
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@ -117,6 +117,7 @@ class Manager(object):
settings = QtCore.QSettings()
settings.beginGroup(plugin_name)
self.db_url = u''
self.is_dirty = False
db_type = unicode(
settings.value(u'db type', QtCore.QVariant(u'sqlite')).toString())
if db_type == u'sqlite':
@ -150,6 +151,7 @@ class Manager(object):
self.session.add(object_instance)
if commit:
self.session.commit()
self.is_dirty = True
return True
except InvalidRequestError:
self.session.rollback()
@ -220,6 +222,7 @@ class Manager(object):
try:
self.session.delete(object_instance)
self.session.commit()
self.is_dirty = True
return True
except InvalidRequestError:
self.session.rollback()
@ -241,6 +244,7 @@ class Manager(object):
query = query.filter(filter_clause)
query.delete(synchronize_session=False)
self.session.commit()
self.is_dirty = True
return True
except InvalidRequestError:
self.session.rollback()
@ -251,5 +255,6 @@ class Manager(object):
"""
VACUUM the database on exit.
"""
engine = create_engine(self.db_url)
engine.execute("vacuum")
if self.is_dirty:
engine = create_engine(self.db_url)
engine.execute("vacuum")