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Code Releases Wiki Activity

move meta class initialization to metaclass in ItemAdaptor

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--HG--
extra : convert_revision : svn%3Ab85faa78-f9eb-468e-a121-7cced6da292c%40974
This commit is contained in:
Ismael Carnales 2009-03-10 16:15:49 +00:00
parent f105359666
commit 06e049e551
1 changed files with 15 additions and 15 deletions
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30
scrapy/trunk/scrapy/contrib_exp/newitem/adaptors.py
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@ -13,9 +13,23 @@ def adaptize(func):
class ItemAdaptorMeta(type):
def __new__(meta, class_name, bases, attrs):
cls = type.__new__(meta, class_name, bases, attrs)
cls.__classinit__.im_func(cls, attrs)
if 'default_adaptor' in attrs:
default_adaptor = adaptize(attrs['default_adaptor'])
cls.default_adaptor = staticmethod(default_adaptor)
cls.field_adaptors = cls.field_adaptors.copy()
if cls.item_class:
for item_field in cls.item_class.fields.keys():
if item_field in attrs:
adaptor = adaptize(attrs[item_field])
cls.field_adaptors[item_field] = adaptor
setattr(cls, item_field, staticmethod(adaptor))
return cls
def __getattr__(cls, name):
@ -34,20 +48,6 @@ class ItemAdaptor(object):
default_adaptor = IDENTITY
field_adaptors = {}
def __classinit__(cls, attrs):
if 'default_adaptor' in attrs:
setattr(cls, 'default_adaptor',
staticmethod(adaptize(attrs['default_adaptor'])))
cls.field_adaptors = cls.field_adaptors.copy()
if cls.item_class:
for item_field in cls.item_class.fields.keys():
if item_field in attrs:
adaptor = adaptize(attrs[item_field])
cls.field_adaptors[item_field] = adaptor
setattr(cls, item_field, staticmethod(adaptor))
def __init__(self, response=None, item=None):
self.item_instance = item if item else self.item_class()
self._response = response