Python mapper.with_polymorphic_mappers方法代码示例

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __init__(self, entity, mapper, selectable, name,
                 with_polymorphic_mappers, polymorphic_on,
                 _base_alias, _use_mapper_path, adapt_on_names):
        self.entity = entity
        self.mapper = mapper
        self.selectable = selectable
        self.name = name
        self.with_polymorphic_mappers = with_polymorphic_mappers
        self.polymorphic_on = polymorphic_on
        self._base_alias = _base_alias or self
        self._use_mapper_path = _use_mapper_path

        self._adapter = sql_util.ColumnAdapter(
            selectable, equivalents=mapper._equivalent_columns,
            adapt_on_names=adapt_on_names, anonymize_labels=True)

        self._adapt_on_names = adapt_on_names
        self._target = mapper.class_

        for poly in self.with_polymorphic_mappers:
            if poly is not mapper:
                setattr(self.entity, poly.class_.__name__,
                        AliasedClass(poly.class_, selectable, base_alias=self,
                                     adapt_on_names=adapt_on_names,
                                     use_mapper_path=_use_mapper_path)) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def _entity_corresponds_to(given, entity):
    """determine if 'given' corresponds to 'entity', in terms
    of an entity passed to Query that would match the same entity
    being referred to elsewhere in the query.

    """
    if entity.is_aliased_class:
        if given.is_aliased_class:
            if entity._base_alias is given._base_alias:
                return True
        return False
    elif given.is_aliased_class:
        if given._use_mapper_path:
            return entity in given.with_polymorphic_mappers
        else:
            return entity is given

    return entity.common_parent(given) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __init__(self, entity, mapper, selectable, name,
                 with_polymorphic_mappers, polymorphic_on,
                 _base_alias, _use_mapper_path, adapt_on_names):
        self.entity = entity
        self.mapper = mapper
        self.selectable = selectable
        self.name = name
        self.with_polymorphic_mappers = with_polymorphic_mappers
        self.polymorphic_on = polymorphic_on
        self._base_alias = _base_alias or self
        self._use_mapper_path = _use_mapper_path

        self._adapter = sql_util.ClauseAdapter(
            selectable, equivalents=mapper._equivalent_columns,
            adapt_on_names=adapt_on_names)

        self._adapt_on_names = adapt_on_names
        self._target = mapper.class_

        for poly in self.with_polymorphic_mappers:
            if poly is not mapper:
                setattr(self.entity, poly.class_.__name__,
                        AliasedClass(poly.class_, selectable, base_alias=self,
                                     adapt_on_names=adapt_on_names,
                                     use_mapper_path=_use_mapper_path)) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def _entity_corresponds_to(given, entity):
    """determine if 'given' corresponds to 'entity', in terms
    of an entity passed to Query that would match the same entity
    being referred to elsewhere in the query.

    """
    if entity.is_aliased_class:
        if given.is_aliased_class:
            if entity._base_alias() is given._base_alias():
                return True
        return False
    elif given.is_aliased_class:
        if given._use_mapper_path:
            return entity in given.with_polymorphic_mappers
        else:
            return entity is given

    return entity.common_parent(given) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __init__(self, entity, mapper, selectable, name,
                    with_polymorphic_mappers, polymorphic_on,
                    _base_alias, _use_mapper_path, adapt_on_names):
        self.entity = entity
        self.mapper = mapper
        self.selectable = selectable
        self.name = name
        self.with_polymorphic_mappers = with_polymorphic_mappers
        self.polymorphic_on = polymorphic_on
        self._base_alias = _base_alias or self
        self._use_mapper_path = _use_mapper_path

        self._adapter = sql_util.ClauseAdapter(selectable,
                            equivalents=mapper._equivalent_columns,
                            adapt_on_names=adapt_on_names)

        self._adapt_on_names = adapt_on_names
        self._target = mapper.class_

        for poly in self.with_polymorphic_mappers:
            if poly is not mapper:
                setattr(self.entity, poly.class_.__name__,
                    AliasedClass(poly.class_, selectable, base_alias=self,
                            adapt_on_names=adapt_on_names,
                            use_mapper_path=_use_mapper_path)) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __getstate__(self):
        return {
            'entity': self.entity,
            'mapper': self.mapper,
            'alias': self.selectable,
            'name': self.name,
            'adapt_on_names': self._adapt_on_names,
            'with_polymorphic_mappers':
                self.with_polymorphic_mappers,
            'with_polymorphic_discriminator':
                self.polymorphic_on,
            'base_alias': self._base_alias,
            'use_mapper_path': self._use_mapper_path
        } 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __setstate__(self, state):
        self.__init__(
            state['entity'],
            state['mapper'],
            state['alias'],
            state['name'],
            state['with_polymorphic_mappers'],
            state['with_polymorphic_discriminator'],
            state['base_alias'],
            state['use_mapper_path'],
            state['adapt_on_names']
        ) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def _entity_for_mapper(self, mapper):
        self_poly = self.with_polymorphic_mappers
        if mapper in self_poly:
            if mapper is self.mapper:
                return self
            else:
                return getattr(
                    self.entity, mapper.class_.__name__)._aliased_insp
        elif mapper.isa(self.mapper):
            return self
        else:
            assert False, "mapper %s doesn't correspond to %s" % (
                mapper, self) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __init__(self, cls, alias=None,
                 name=None,
                 flat=False,
                 adapt_on_names=False,
                 #  TODO: None for default here?
                 with_polymorphic_mappers=(),
                 with_polymorphic_discriminator=None,
                 base_alias=None,
                 use_mapper_path=False,
                 represents_outer_join=False):
        mapper = _class_to_mapper(cls)
        if alias is None:
            alias = mapper._with_polymorphic_selectable.alias(
                name=name, flat=flat)

        self._aliased_insp = AliasedInsp(
            self,
            mapper,
            alias,
            name,
            with_polymorphic_mappers
            if with_polymorphic_mappers
            else mapper.with_polymorphic_mappers,
            with_polymorphic_discriminator
            if with_polymorphic_discriminator is not None
            else mapper.polymorphic_on,
            base_alias,
            use_mapper_path,
            adapt_on_names,
            represents_outer_join
        )

        self.__name__ = 'AliasedClass_%s' % mapper.class_.__name__ 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __getstate__(self):
        return {
            'entity': self.entity,
            'mapper': self.mapper,
            'alias': self.selectable,
            'name': self.name,
            'adapt_on_names': self._adapt_on_names,
            'with_polymorphic_mappers':
                self.with_polymorphic_mappers,
            'with_polymorphic_discriminator':
                self.polymorphic_on,
            'base_alias': self._base_alias,
            'use_mapper_path': self._use_mapper_path,
            'represents_outer_join': self.represents_outer_join
        } 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def __setstate__(self, state):
        self.__init__(
            state['entity'],
            state['mapper'],
            state['alias'],
            state['name'],
            state['with_polymorphic_mappers'],
            state['with_polymorphic_discriminator'],
            state['base_alias'],
            state['use_mapper_path'],
            state['adapt_on_names'],
            state['represents_outer_join']
        ) 

# 需要导入模块: from sqlalchemy.orm import mapper [as 别名]
# 或者: from sqlalchemy.orm.mapper import with_polymorphic_mappers [as 别名]
def _entity_isa(given, mapper):
    """determine if 'given' "is a" mapper, in terms of the given
    would load rows of type 'mapper'.

    """
    if given.is_aliased_class:
        return mapper in given.with_polymorphic_mappers or \
            given.mapper.isa(mapper)
    elif given.with_polymorphic_mappers:
        return mapper in given.with_polymorphic_mappers
    else:
        return given.isa(mapper)