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stats:proc:signoutgroup [2011/09/29 00:08] Patrick Michel |
stats:proc:signoutgroup [2013/06/20 11:02] Mathias Weber |
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<code xcend> | <code xcend> | ||
- | signOutGroup(ident id, ident studentId) { | + | signOutGroup(ident uid, ident id, ident studentId) { |
- | assume exists //exercises/exercise[id]/students/student[studentId]/group; # implies existence of the exercise and student, even the group | + | assume exists //exercises/exercise[id] && //exercises/exercise[id]/open && |
+ | exists //accounts/account[uid]/student && //accounts/account[uid]/student/id = studentId | ||
+ | || exists //accounts/account[uid]/assistant[id]; | ||
+ | |||
+ | assume exists //exercises/exercise[id]/students/student[studentId]/group; | ||
+ | # implies existence of the exercise and student, even the group | ||
| | ||
+ | | ||
+ | update //exercises/exercise[id]/groups/group[//exercises/exercise[id]/students/student[studentId]/group]/curSize | ||
+ | (//exercises/exercise[id]/groups/group[//exercises/exercise[id]/students/student[studentId]/group]/curSize - 1) | ||
remove //exercises/exercise[id]/students/student[studentId]/group; | remove //exercises/exercise[id]/students/student[studentId]/group; | ||
- | } # roles: assistant[id] | + | } |
</code> | </code> |