当前位置: 首页>>代码示例>>Python>>正文


Python indexable.index_property方法代码示例

本文整理汇总了Python中sqlalchemy.ext.indexable.index_property方法的典型用法代码示例。如果您正苦于以下问题:Python indexable.index_property方法的具体用法?Python indexable.index_property怎么用?Python indexable.index_property使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在sqlalchemy.ext.indexable的用法示例。


在下文中一共展示了indexable.index_property方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: is_index_property

# 需要导入模块: from sqlalchemy.ext import indexable [as 别名]
# 或者: from sqlalchemy.ext.indexable import index_property [as 别名]
def is_index_property(obj: object, name: str) -> bool:
    """Check if an object property is index_property like.

    This is needed to correctly generate Colander schema for index_property in SQLAlchemy models.
    """
    # http://docs.sqlalchemy.org/en/rel_1_1/changelog/migration_11.html#new-indexable-orm-extension
    attr = inspect.getattr_static(obj, name)
    return isinstance(attr, index_property) 
开发者ID:websauna,项目名称:websauna,代码行数:10,代码来源:jsonb.py

示例2: __init__

# 需要导入模块: from sqlalchemy.ext import indexable [as 别名]
# 或者: from sqlalchemy.ext.indexable import index_property [as 别名]
def __init__(
            self, attr_name, index, default=_NO_DEFAULT_ARGUMENT,
            datatype=None, mutable=True, onebased=True):
        """Create a new :class:`.index_property`.

        :param attr_name:
            An attribute name of an `Indexable` typed column, or other
            attribute that returns an indexable structure.
        :param index:
            The index to be used for getting and setting this value.  This
            should be the Python-side index value for integers.
        :param default:
            A value which will be returned instead of `AttributeError`
            when there is not a value at given index.
        :param datatype: default datatype to use when the field is empty.
            By default, this is derived from the type of index used; a
            Python list for an integer index, or a Python dictionary for
            any other style of index.   For a list, the list will be
            initialized to a list of None values that is at least
            ``index`` elements long.
        :param mutable: if False, writes and deletes to the attribute will
            be disallowed.
        :param onebased: assume the SQL representation of this value is
            one-based; that is, the first index in SQL is 1, not zero.
        """

        if mutable:
            super(index_property, self).__init__(
                self.fget, self.fset, self.fdel, self.expr
            )
        else:
            super(index_property, self).__init__(
                self.fget, None, None, self.expr
            )
        self.attr_name = attr_name
        self.index = index
        self.default = default
        is_numeric = isinstance(index, int)
        onebased = is_numeric and onebased

        if datatype is not None:
            self.datatype = datatype
        else:
            if is_numeric:
                self.datatype = lambda: [None for x in range(index + 1)]
            else:
                self.datatype = dict
        self.onebased = onebased 
开发者ID:Agentscreech,项目名称:ShelbySearch,代码行数:50,代码来源:indexable.py


注:本文中的sqlalchemy.ext.indexable.index_property方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。