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Handle missing tables and set the meta data to the correct value

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bzr-revno: 1727
This commit is contained in:
Tim Bentley 2011-08-28 06:56:09 +01:00
commit b0584ccd09
1 changed files with 20 additions and 12 deletions
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32
openlp/core/lib/db.py
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@ -79,8 +79,11 @@ def upgrade_db(url, upgrade):
Provides a class for the metadata table.
"""
pass
tables = upgrade.upgrade_setup(metadata)
load_changes = True
try:
tables = upgrade.upgrade_setup(metadata)
except SQLAlchemyError, DBAPIError:
load_changes = False
metadata_table = Table(u'metadata', metadata,
Column(u'key', types.Unicode(64), primary_key=True),
Column(u'value', types.UnicodeText(), default=None)
@ -96,16 +99,21 @@ def upgrade_db(url, upgrade):
if version > upgrade.__version__:
return version, upgrade.__version__
version += 1
while hasattr(upgrade, u'upgrade_%d' % version):
log.debug(u'Running upgrade_%d', version)
try:
getattr(upgrade, u'upgrade_%d' % version)(session, metadata, tables)
version_meta.value = unicode(version)
except SQLAlchemyError, DBAPIError:
log.exception(u'Could not run database upgrade script "upgrade_%s"'\
', upgrade process has been halted.', version)
break
version += 1
if load_changes:
while hasattr(upgrade, u'upgrade_%d' % version):
log.debug(u'Running upgrade_%d', version)
try:
getattr(upgrade, u'upgrade_%d' % version) \
(session, metadata, tables)
version_meta.value = unicode(version)
except SQLAlchemyError, DBAPIError:
log.exception(u'Could not run database upgrade script '
'"upgrade_%s", upgrade process has been halted.', version)
break
version += 1
else:
version_meta = Metadata.populate(key=u'version',
value=int(upgrade.__version__))
session.add(version_meta)
session.commit()
return int(version_meta.value), upgrade.__version__