bazaar.cache.ListReferenceBuffer

Package bazaar :: Module cache :: Class ListReferenceBuffer

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Class ListReferenceBuffer

     UserDict --+        
                |        
WeakKeyDictionary --+    
                    |    
      ReferenceBuffer --+
                        |
                       ListReferenceBuffer

Reference buffer for set of objects.

It is dictionary with application objects as keys and set of referenced objects as value.

See Also: bazaar.cache.ReferenceBuffer

Method Summary
	`__contains__(self, item)` Check if object is in reference buffer.
	`__delitem__(self, (obj, value))` Remove referenced object from application object's set of referenced objects.
	`__setitem__(self, obj, value)` Add referenced object to the aplication object's set of referenced objects.
Inherited from WeakKeyDictionary
	`__init__(self, dict)`
	`__getitem__(self, key)`
	`__iter__(self)`
	`__repr__(self)`
	`copy(self)`
	`get(self, key, default)`
	`has_key(self, key)`
	`items(self)`
	`iteritems(self)`
	`iterkeys(self)`
	`itervalues(self)`
	`keys(self)`
	`pop(self, key, *args)`
	`popitem(self)`
	`setdefault(self, key, default)`
	`update(self, dict, **kwargs)`
Inherited from UserDict
	`__cmp__(self, dict)`
	`__len__(self)`
	`clear(self)`
	`fromkeys(cls, iterable, value)` (Class method)
	`values(self)`

Instance Method Details

contains(self, item)
(In operator)

Check if object is in reference buffer. Operator in can be used in two ways:

   # buffer contains minimum one referenced value by application
   # object obj (len(ref_buf[obj]) > 0):
   obj in ref_buf
   # or
   (obj, None) in ref_buf

   # referenced object value is referenced by obj and exists in
   # buffer:
   (obj, value) in ref_buf