- added caching to world calculation

git-svn-id: http://svn.sabayonlinux.org/projects/entropy/trunk@1014 cd1c1023-2f26-0410-ae45-c471fc1f0318

libraries/databaseTools.py

@@ -2313,9 +2313,6 @@ class etpDatabase(TextInterface):
 
     def retrieveNeeded(self, idpackage):
 
-	cache = self.fetchInfoCache(idpackage,'retrieveNeeded')
-	if cache != None: return cache
-
         try:
             self.cursor.execute('SELECT library FROM needed,neededreference WHERE needed.idpackage = (?) and needed.idneeded = neededreference.idneeded', (idpackage,))
         except:
@@ -2323,7 +2320,6 @@ class etpDatabase(TextInterface):
             self.cursor.execute('SELECT library FROM needed,neededreference WHERE needed.idpackage = (?) and needed.idneeded = neededreference.idneeded', (idpackage,))
         needed = self.fetchall2set(self.cursor.fetchall())
 
-	self.storeInfoCache(idpackage,'retrieveNeeded',needed)
 	return needed
 
     def retrieveConflicts(self, idpackage):
@@ -3202,6 +3198,17 @@ class etpDatabase(TextInterface):
         if rslt == None:
             raise exceptionTools.SystemDatabaseError("SystemDatabaseError: table extrainfo not found. Either does not exist or corrupted.")
 
+    def tablesChecksum(self):
+        import md5
+        self.cursor.execute('select * from baseinfo')
+        m = md5.new()
+        for row in self.cursor:
+            m.update(str(row))
+        self.cursor.execute('select * from dependenciesreference')
+        for row in self.cursor:
+            m.update(str(row))
+        return m.hexdigest()
+
 
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