Python collection.removes_return方法代碼示例

本文整理匯總了Python中sqlalchemy.orm.collections.collection.removes_return方法的典型用法代碼示例。如果您正苦於以下問題：Python collection.removes_return方法的具體用法？Python collection.removes_return怎麽用？Python collection.removes_return使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類sqlalchemy.orm.collections.collection的用法示例。

在下文中一共展示了collection.removes_return方法的9個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。

示例1: remover

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def remover(fn):
        """Tag the method as the collection remover.

        The remover method is called with one positional argument: the value
        to remove. The method will be automatically decorated with
        :meth:`removes_return` if not already decorated::

            @collection.remover
            def zap(self, entity): ...

            # or, equivalently
            @collection.remover
            @collection.removes_return()
            def zap(self, ): ...

        If the value to remove is not present in the collection, you may
        raise an exception or return None to ignore the error.

        If the remove method is internally instrumented, you must also
        receive the keyword argument '_sa_initiator' and ensure its
        promulgation to collection events.

        """
        fn._sa_instrument_role = 'remover'
        return fn

開發者ID:jpush，項目名稱:jbox，代碼行數:27，代碼來源:collections.py

示例2: removes

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def removes(arg):
        """Mark the method as removing an entity in the collection.

        Adds "remove from collection" handling to the method.  The decorator
        argument indicates which method argument holds the SQLAlchemy-relevant
        value to be removed. Arguments can be specified positionally (i.e.
        integer) or by name::

            @collection.removes(1)
            def zap(self, item): ...

        For methods where the value to remove is not known at call-time, use
        collection.removes_return.

        """
        def decorator(fn):
            fn._sa_instrument_before = ('fire_remove_event', arg)
            return fn
        return decorator

開發者ID:jpush，項目名稱:jbox，代碼行數:21，代碼來源:collections.py

示例3: removes_return

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def removes_return():
        """Mark the method as removing an entity in the collection.

        Adds "remove from collection" handling to the method.  The return
        value of the method, if any, is considered the value to remove.  The
        method arguments are not inspected::

            @collection.removes_return()
            def pop(self): ...

        For methods where the value to remove is known at call-time, use
        collection.remove.

        """
        def decorator(fn):
            fn._sa_instrument_after = 'fire_remove_event'
            return fn
        return decorator

開發者ID:jpush，項目名稱:jbox，代碼行數:20，代碼來源:collections.py

示例4: remover

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def remover(fn):
        """Tag the method as the collection remover.

        The remover method is called with one positional argument: the value
        to remove. The method will be automatically decorated with
        :meth:`removes_return` if not already decorated::

            @collection.remover
            def zap(self, entity): ...

            # or, equivalently
            @collection.remover
            @collection.removes_return()
            def zap(self, ): ...

        If the value to remove is not present in the collection, you may
        raise an exception or return None to ignore the error.

        If the remove method is internally instrumented, you must also
        receive the keyword argument '_sa_initiator' and ensure its
        promulgation to collection events.

        """
        fn._sa_instrument_role = "remover"
        return fn

開發者ID:sqlalchemy，項目名稱:sqlalchemy，代碼行數:27，代碼來源:collections.py

示例5: removes

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def removes(arg):
        """Mark the method as removing an entity in the collection.

        Adds "remove from collection" handling to the method.  The decorator
        argument indicates which method argument holds the SQLAlchemy-relevant
        value to be removed. Arguments can be specified positionally (i.e.
        integer) or by name::

            @collection.removes(1)
            def zap(self, item): ...

        For methods where the value to remove is not known at call-time, use
        collection.removes_return.

        """

        def decorator(fn):
            fn._sa_instrument_before = ("fire_remove_event", arg)
            return fn

        return decorator

開發者ID:sqlalchemy，項目名稱:sqlalchemy，代碼行數:23，代碼來源:collections.py

示例6: removes_return

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def removes_return():
        """Mark the method as removing an entity in the collection.

        Adds "remove from collection" handling to the method.  The return
        value of the method, if any, is considered the value to remove.  The
        method arguments are not inspected::

            @collection.removes_return()
            def pop(self): ...

        For methods where the value to remove is known at call-time, use
        collection.remove.

        """

        def decorator(fn):
            fn._sa_instrument_after = "fire_remove_event"
            return fn

        return decorator

開發者ID:sqlalchemy，項目名稱:sqlalchemy，代碼行數:22，代碼來源:collections.py

示例7: removes_return

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def removes_return():
        """Mark the method as removing an entity in the collection.

        Adds "remove from collection" handling to the method.  The return value
        of the method, if any, is considered the value to remove.  The method
        arguments are not inspected::

            @collection.removes_return()
            def pop(self): ...

        For methods where the value to remove is known at call-time, use
        collection.remove.

        """
        def decorator(fn):
            fn._sa_instrument_after = 'fire_remove_event'
            return fn
        return decorator

開發者ID:binhex，項目名稱:moviegrabber，代碼行數:20，代碼來源:collections.py

示例8: test_object_duck

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def test_object_duck(self):
        class MyCollection(object):
            def __init__(self):
                self.data = set()

            @collection.appender
            def push(self, item):
                self.data.add(item)

            @collection.remover
            def zark(self, item):
                self.data.remove(item)

            @collection.removes_return()
            def maybe_zark(self, item):
                if item in self.data:
                    self.data.remove(item)
                    return item

            @collection.iterator
            def __iter__(self):
                return iter(self.data)

            __hash__ = object.__hash__

            def __eq__(self, other):
                return self.data == other

        self._test_adapter(MyCollection)
        self._test_object(MyCollection)
        self.assert_(
            getattr(MyCollection, "_sa_instrumented") == id(MyCollection)
        )

開發者ID:sqlalchemy，項目名稱:sqlalchemy，代碼行數:35，代碼來源:test_collection.py

示例9: test_object_emulates

# 需要導入模塊: from sqlalchemy.orm.collections import collection [as 別名]
# 或者: from sqlalchemy.orm.collections.collection import removes_return [as 別名]
def test_object_emulates(self):
        class MyCollection2(object):
            __emulates__ = None

            def __init__(self):
                self.data = set()

            # looks like a list

            def append(self, item):
                assert False

            @collection.appender
            def push(self, item):
                self.data.add(item)

            @collection.remover
            def zark(self, item):
                self.data.remove(item)

            @collection.removes_return()
            def maybe_zark(self, item):
                if item in self.data:
                    self.data.remove(item)
                    return item

            @collection.iterator
            def __iter__(self):
                return iter(self.data)

            __hash__ = object.__hash__

            def __eq__(self, other):
                return self.data == other

        self._test_adapter(MyCollection2)
        self._test_object(MyCollection2)
        self.assert_(
            getattr(MyCollection2, "_sa_instrumented") == id(MyCollection2)
        )

開發者ID:sqlalchemy，項目名稱:sqlalchemy，代碼行數:42，代碼來源:test_collection.py

注：本文中的sqlalchemy.orm.collections.collection.removes_return方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。