Ejemplo n.º 1
0
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):
Ejemplo n.º 2
0
    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):