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Fixes and changes since PyProtocols 0.9.2 |
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- The 'factory' parameter to 'adapt()' was REMOVED. An informal survey of |
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PyProtocols' users indicated that nobody was using it to any significant |
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degree, and its removal was unopposed. This feature was an extension to |
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PEP 246, so this brings PyProtocols into closer conformance with the PEP. |
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- Raise 'AdaptationFailure' instead of 'NotImplementedError' when adaptation |
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is unsuccessful. 'AdaptationFailure' is a subclass of both 'TypeError' and |
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'NotImplementedError', so code written according to either PEP 246 or older |
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versions of PyProtocols will still catch the error. |
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- There is now an 'AbstractBase' class, similar to 'Interface', that can be |
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used for the "ABC" (Abstract Base Class) style of interface usage, where the |
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interface may contain implementation code, and can be subclassed to create |
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concrete implementations. In previous versions, you could use 'Interface' |
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as such a base class, but now calling an 'Interface' object performs |
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adaptation, rather than instantiation. |
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- 'Protocol' instances (except for 'AbstractBase' subclasses) are now callable |
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with a signature similar to 'adapt()'. E.g. 'ISomething(foo,*args)' is |
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equivalent to 'adapt(foo,ISomething,*args)'. This convenient API, pioneered |
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by Twisted and later adopted by Zope X3, is now available in PyProtocols as |
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well. (Note that as a result of this change, the PyProtocols test suite now |
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requires a Zope X3 alpha release or better.) |
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- 'setup.py' now accepts a '--without-speedups' global option to disable |
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the C speedups module. |
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- We now support the latest 'adapter_hooks' protocol provided by Zope X3 |
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interfaces, allowing multiple interface registry systems to participate |
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in Zope interfaces' '__adapt__()' implementation. |
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- Declaring an adapter from an instance to a protocol that was part |
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of a circular implication path resulted in infinite recursion. |
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Correcting the problem required a change in the return signature |
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of the 'declareProvides()' method in the 'IOpenProvider' interface. |
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Please see the docstring or the updated reference manual for details. |
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Thanks to Bob Ippolito for discovering the problem and bringing it to my |
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attention. |
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- Defining an adapter from one protocol to another, when that adapter does not |
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shorten the adaptation path, would produce a spurious 'KeyError'. |
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| Fixes since PyProtocols 0.9.1 |
Fixes since PyProtocols 0.9.1 |
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| - Fixed missing unit tests for 'Variation' class, and the two bugs in |
- Fixed missing unit tests for 'Variation' class, and the two bugs in |
Diff of /PyProtocols/CHANGES.txt
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