ECHO_content/ECHO_collection.py - diff

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-version 1.185, 2004/10/27 16:05:55
+version 1.186, 2004/10/28 10:57:05
  Line 3109  class ECHO_root(Folder,Persistent,Implic
      #return "http://enlil.museum.upenn.edu/cgi-bin/cdlget.plx?item=%s&project=ncdl"
      ###END CDLI add
+     def checkResource(self,id):
+         """checks if a resource is in the tree, gives back none or list of resources"""
+         if hasattr(self,"_v_checkResource") and self._v_checkResource.has_key(id): #existiert ein cache und id ist bereits drin?
+                 return self._v_checkResource[id]
+         else:
+             resources=self.ZopeFind(self,obj_metatypes=['ECHO_resource'],obj_ids=[id],search_sub=1)
+             if not hasattr(self,"_v_checkResource"): self._v_checkResource={}#lege cache an falls nicht existent
+             if resources:
+                 self._v_checkResource[id]=resources[0:] # slicing to be sure that data is stabil
+             else:
+                 self._v_checkResource[id]=None
+             return self._v_checkResource[id]
      def sendForm(self,fromaddr,content,server='mail.mpiwg-berlin.mpg.de'):
          """sendform"""
          toaddrs=["dwinter@mpiwg-berlin.mpg.de"]