dal.py 文件源码

def import_table_definitions(self, path, migrate=False,
                                 fake_migrate=False, tables=None):
        if tables:
            for table in tables:
                self.define_table(**table)
        else:
            pattern = pjoin(path, self._uri_hash+'_*.table')
            for filename in glob.glob(pattern):
                tfile = self._adapter.file_open(filename, 'r')
                try:
                    sql_fields = pickle.load(tfile)
                    name = filename[len(pattern)-7:-6]
                    mf = [(value['sortable'],
                           Field(key,
                                 type=value['type'],
                                 length=value.get('length', None),
                                 notnull=value.get('notnull', False),
                                 unique=value.get('unique', False))) \
                              for key, value in sql_fields.iteritems()]
                    mf.sort(lambda a, b: cmp(a[0], b[0]))
                    self.define_table(name, *[item[1] for item in mf],
                                      **dict(migrate=migrate,
                                             fake_migrate=fake_migrate))
                finally:
                    self._adapter.file_close(tfile)