import schevo.error
from schevo import field
from schevo.fieldspec import FieldMap, FieldSpecMap
from schevo.label import label, plural
from schevo.lib.odict import odict
from schevo.meta import schema_metaclass
import schevo.namespace
from schevo.namespace import namespaceproperty
from schevo import queryns
from schevo.trace import log
# --------------------------------------------------------------------
QueryMeta = schema_metaclass('Q')
# --------------------------------------------------------------------
class Query(base.Query):
"""Simplest query possible, returning no results."""
__metaclass__ = QueryMeta
def __call__(self):
"""Shortcut to get to `_query_results` method."""
return self._results()
def _results(self):
TransactionExecuteRedefinitionRestricted,
TransactionExpired,
TransactionFieldsNotChanged,
TransactionNotExecuted,
)
from schevo.field import Entity, _EntityBase, not_fget
from schevo.fieldspec import FieldMap, FieldSpecMap
from schevo.label import label
from schevo.meta import schema_metaclass
import schevo.namespace
from schevo.namespace import namespaceproperty
from schevo.trace import log
from schevo import transactionns
T_metaclass = schema_metaclass('T')
class TransactionMeta(T_metaclass):
def __init__(cls, class_name, bases, class_dict):
T_metaclass.__init__(cls, class_name, bases, class_dict)
if (cls._restrict_subclasses
and '_restrict_subclasses' not in class_dict
):
# Base class is restricting its subclasses.
if '__init__' in class_dict or '_execute' in class_dict:
raise TransactionExecuteRedefinitionRestricted(
class_name, bases)
cls._h_names = cls.get_method_names('h_')
cls._x_names = cls.get_method_names('x_')
def get_method_names(cls, prefix):