tseaver at palladion
May 25, 2009, 9:37 AM
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RFC: zope.app.pagetemplate.engine dependencies
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Resolution #1
=============
Whereas:
- - The 'zope.app.pagetemplate.engine' module pulls in nothing from
'zope.app' packages except some antique testing support in doctest;
- - that module is potentially useful outside the scope of the Zope3 ZMI;
therefore be it resolved:
- - that we move the 'engine' module to 'zope.pagetemplate', along with
its supporting scaffolding, and clean up the tests.
Resolution #2
=============
Whereas:
- - The 'evaluateInlineCode' support in the 'engine' module has
no tests;
- - its comments indicate that it exists to support 'zope.app.pythonpage',
which doesn't even import the module;
- - third-party consumers of the feature have a recently-released version
of the egg which they can continue using indefinitely;
therefore be it resolved:
- - that we remove the code entirely, documenting the backward
incompatibility in a new feature release.
Resolution #3
=============
Whereas:
- - In Zope2, the 'Products.PageTemplates.Expressions' module depends
on the 'zope.app.pagetemplates.engine' module, but only uses its
'ZopeEngine' class;
- - Zope2 further supplies its own context class (to avoid using the Zope3
security model);
- - one remaining bit of non-overridden functionality is the Zope3-
proxified 'getFunctionNamespace' wrapper, which probably won't work
at all as intended;
- - the other bit is the use of the AdapterNamespaces bit, which feeds
into the 'getFunctionNamespace' bit;
therefore be it resolved:
- - that we forego using the 'ZopeEngine' class completely in Zope2,
providing instead a forked / simplified implementation.
Debate, anyone?
Tres.
- --
===================================================================
Tres Seaver +1 540-429-0999 tseaver[at]palladion.com
Palladion Software "Excellence by Design" http://palladion.com
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RFC: zope.app.pagetemplate.engine dependencies
