[devtools] change the way we start/stop postgresql
Instead of having the test db handler start a cluster on demand, use the
test module's setUp/tearDown callbacks to do it. This allows to have
one data directory (and thus cluster) per test module, allowing
different test modules to run in parallel, each using its own database
cluster whose path is based on the test module.
def migrate_varchar_to_nvarchar():
dbdriver = config.system_source_config['db-driver']
if dbdriver != "sqlserver2005":
return
introspection_sql = """\
SELECT table_schema, table_name, column_name, is_nullable, character_maximum_length
FROM information_schema.columns
WHERE data_type = 'VARCHAR' and table_name <> 'SYSDIAGRAMS'
"""
has_index_sql = """\
SELECT i.name AS index_name,
i.type_desc,
i.is_unique,
i.is_unique_constraint
FROM sys.indexes AS i, sys.index_columns as j, sys.columns as k
WHERE is_hypothetical = 0 AND i.index_id <> 0
AND i.object_id = j.object_id
AND i.index_id = j.index_id
AND i.object_id = OBJECT_ID('%(table)s')
AND k.name = '%(col)s'
AND k.object_id=i.object_id
AND j.column_id = k.column_id;"""
generated_statements = []
for schema, table, column, is_nullable, length in sql(introspection_sql, ask_confirm=False):
qualified_table = '[%s].[%s]' % (schema, table)
rset = sql(has_index_sql % {'table': qualified_table, 'col':column},
ask_confirm = False)
drops = []
creates = []
for idx_name, idx_type, idx_unique, is_unique_constraint in rset:
if is_unique_constraint:
drops.append('ALTER TABLE %s DROP CONSTRAINT %s' % (qualified_table, idx_name))
creates.append('ALTER TABLE %s ADD CONSTRAINT %s UNIQUE (%s)' % (qualified_table, idx_name, column))
else:
drops.append('DROP INDEX %s ON %s' % (idx_name, qualified_table))
if idx_unique:
unique = 'UNIQUE'
else:
unique = ''
creates.append('CREATE %s %s INDEX %s ON %s(%s)' % (unique, idx_type, idx_name, qualified_table, column))
if length == -1:
length = 'max'
if is_nullable == 'YES':
not_null = 'NULL'
else:
not_null = 'NOT NULL'
alter_sql = 'ALTER TABLE %s ALTER COLUMN %s NVARCHAR(%s) %s' % (qualified_table, column, length, not_null)
generated_statements+= drops + [alter_sql] + creates
for statement in generated_statements:
print statement
sql(statement, ask_confirm=False)
commit()
migrate_varchar_to_nvarchar()