Package ndg :: Package xacml :: Package core :: Package functions :: Package v1 :: Module one_and_only :: Class OneAndOnlyBase

Class OneAndOnlyBase

source code

      object --+    
               |    
AbstractFunction --+
                   |
                  OneAndOnlyBase

Base class for XACML <type>-one-and-only functions

Nested Classes

[hide private]

Inherited from AbstractFunction: __metaclass__

Instance Methods

[hide private]

dependent on bag type set in derived type

evaluate(self, bag)
Check a bag has one element only and return it

source code

Inherited from AbstractFunction: __init__

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables

[hide private]

NoneType TYPE = None
attribute type for the given implementation.

__abstractmethods__ = frozenset([])

Inherited from AbstractFunction: FUNCTION_NS, V1_0_FUNCTION_NS, V2_0_FUNCTION_NS

Inherited from AbstractFunction (private): _abc_cache, _abc_negative_cache, _abc_negative_cache_version, _abc_registry

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

evaluate(self, bag)

source code

Check a bag has one element only and return it

Parameters:

bag (ndg.xacml.utils.TypedList) - bag containing one element

Returns: dependent on bag type set in derived type

single item from bag

Overrides: AbstractFunction.evaluate

Class Variable Details

[hide private]

TYPE

attribute type for the given implementation. Derived classes should set appropriately

Type:: NoneType

Value:

None