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--- stats:proc:revoketutorrights [2011/09/27 20:48] – created Patrick Michel
+++ stats:proc:revoketutorrights [2013/07/10 12:33] (current) – external edit 127.0.0.1
@@ Line 2: / Line 2: @@
 <code xcend>
-revokeTutorRights(ident username, ident exerciseId, ident groupId) {
+revokeTutorRights(ident uid, ident username, ident exerciseId, ident groupId) {
-  assume exists //accounts/account[username]/tutor[exerciseId]/group[groupId]; # implies the account exists, which is implicitly true anyway
+  assume exists /account[uid]/assistant[exerciseId];
-  assume exists //exercises/exercise[exerciseId]/groups/group[groupId]/tutor[account]; # implied by integrity and the assumption before
+  assume exists /account[username]/tutor[exerciseId]/group[groupId];
+  assume exists /exercise[exerciseId]/group[groupId]/tutor[username];
+    # implied by integrity and the assumption before
-  remove //accounts/account[username]/tutor[exerciseId]/group[groupId];
+  remove /account[username]/tutor[exerciseId]/group[groupId];
-  if size(//accounts/account[username]/tutor[exerciseId]/group) = 0 then # should this be an additional procedure?
+  if size(/account[username]/tutor[exerciseId]/group) = 0 then # should this be an additional procedure?
-    remove //accounts/account[username]/tutor[exerciseId];
+    remove /account[username]/tutor[exerciseId];
   fi
-  remove //exercises/exercise[exerciseId]/groups/group[groupId]/tutor[account];
+  remove /exercise[exerciseId]/group[groupId]/tutor[username];
 }
 </code>