there's no "registry" of tables to mappers. You'd need to track that yourself, or otherwise scan through all mappers (non-public attribute sqlalchemy.orm._mapper_registry) looking for tables (each mapper has a .local_table attribute). Note that many mappers can be created against a single table.
To track yourself: from sqlalchemy.orm import mapper as _mapper import collections my_registry_of_tables = collections.defaultdict(set) def mapper(cls, table=None, *arg, **kw): my_registry_of_tables[table].add(cls) return _mapper(cls, table, *arg, **kw) from sqlalchemy.ext.declarative import declarative_base Base = declarative_base(mapper=mapper) On Mar 7, 2011, at 11:51 PM, James Mills wrote: > Hello, > > Given a scenario where you're using declarative_base(...) and defining classes > > Is there a way to ask SA what the mapper class (declarative) is for a given > table > by inspecting something in metadata["table_name"] ? > > cheers > James > > > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To post to this group, send email to sqlalchemy@googlegroups.com. > To unsubscribe from this group, send email to > sqlalchemy+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.