"""wxoo.table adapter for DB-API databases"""
from basicproperty import propertied,common,basic
from wxoo.table import adapter
from wxoo import propertydescriptor
class DBAPIAdapter( adapter.Adapter ):
"""DBAPI2.0 adapter interface for SQL databases
This is the base class for DBAPI 2.0 adapters
it provides only the most basic insert, update and
property support (with no data type information
available, and hence no specialized editors).
The values edited by a DBAPI adapter are "DBTables",
which are specialized collections providing
sequence semantics for a query-result set
(though at the moment, this must be an actual table).
"""
def CalculateProperties(self, value = None):
"""Return property set for the given or current value
value -- if not None, a value other than the current value
for which properties should be retrieved.
This implementation uses the propertyset module to
create a set of property definitions for the value.
"""
if value is None:
value = self.GetValue()
if value and value.properties:
return value.properties
else:
return []
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