work in progress: sub-elements, e.g. for annotations and state information - export OK

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2478 fd906abe-77d9-0310-91a1-e0d9ade77398

external/annotation.py

@@ -23,6 +23,7 @@ $Id$
 """
 
 from zope.component import adapts
+from zope.dublincore.interfaces import IZopeDublinCore
 from zope.interface import implements
 
 from loops.external.element import Element, elementTypes
@@ -47,8 +48,26 @@ class AnnotationsExtractor(object):
     implements(ISubExtractor)
     adapts(ILoopsObject)
 
+    dcAttributes = ('title', 'description', 'creators', 'created', 'modified')
+
+    def __init__(self, context):
+        self.context = context
+
     def extract(self):
-        return []
+        dc = IZopeDublinCore(self.context, None)
+        if dc is not None:
+            result = {}
+            for attr in self.dcAttributes:
+                value = getattr(dc, attr, None)
+                if attr in ('title',):
+                    if value == getattr(self.context, attr):
+                        value = None
+                if value:
+                    if attr in ('created', 'modified'):
+                        value = value.strftime('%Y-%m-%dT%H:%M')
+                    result[attr] = value
+            if result:
+                yield AnnotationsElement(**result)
 
 
 elementTypes.update(dict(

external/base.py

@@ -176,7 +176,7 @@ class Extractor(Base):
             yield elem
             childPath = path and '/'.join((path, name)) or name
             for elem in self.extractNodes(obj, childPath):
-                self.provideSubElements(obj, elem)
+                #self.provideSubElements(obj, elem)
                 yield elem
 
     # helper methods

external/configure.zcml

@@ -9,17 +9,18 @@
 
   <zope:utility factory="loops.external.pyfunc.PyWriter" />
 
+  <zope:adapter factory="loops.external.annotation.AnnotationsExtractor" />
+
+  <!-- views -->
+
   <browser:pages for="loops.interfaces.ILoops"
          class="loops.external.browser.ExportImport"
          permission="zope.ManageSite">
-
     <browser:page name="exportimport.html"
           template="exportimport.pt"
           menu="zmi_views" title="Export/Import"  />
-
     <browser:page name="export_loops.html"
           attribute="export" />
-
   </browser:pages>
 
 </configure>