provide Archetypes-only fallback if plone.uuid is not available, re…

…storing compatibility with Plone 4.0.x

svn path=/plone.app.linkintegrity/trunk/; revision=52087

CHANGES.txt

@@ -4,6 +4,10 @@ Changelog
 1.4.4 - unreleased
 ------------------
 
+- Provide Archetypes-only fallback if `plone.uuid` is not available,
+  restoring compatibility with Plone 4.0.x.
+  [witsch]
+
 
 1.4.3 - 2011-09-14
 ------------------
@@ -45,7 +49,7 @@ Changelog
 1.4.0 - 2011-01-03
 ------------------
 
-- Use plone.uuid to look up content UUIDs.
+- Use `plone.uuid` to look up content UUIDs.
   [toutpt, davisagli]
 
 

plone/app/linkintegrity/info.py

@@ -1,8 +1,19 @@
 from plone.app.linkintegrity.interfaces import ILinkIntegrityInfo
 from zope.interface import implements
 from zope.component import queryUtility
+from Acquisition import aq_base
 from Products.CMFCore.interfaces import IPropertiesTool
-from plone.uuid.interfaces import IUUID
+
+try:
+    from plone.uuid.interfaces import IUUID
+    IUUID       # make pyflakes happy
+except ImportError:
+    # Archetypes-only fallback for Plone < 4.1
+    def IUUID(obj, default=None):
+        if hasattr(aq_base(obj), 'UID'):
+            return obj.UID()
+        else:
+            return default
 
 
 class LinkIntegrityInfo(object):

setup.py

@@ -29,7 +29,6 @@
       include_package_data=True,
       install_requires=[
         'setuptools',
-        'plone.uuid',
       ],
       extras_require={'test': [
         'collective.testcaselayer',