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stats:proc:unregisterstudent [2011/10/15 20:17] Patrick Michel |
stats:proc:unregisterstudent [2012/05/29 16:49] Patrick Michel |
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<code xcend> | <code xcend> | ||
unregisterStudent(ident uid, ident id, ident studentId) { | unregisterStudent(ident uid, ident id, ident studentId) { | ||
- | assume exists //exercises/exercise[id]/student[studentId]; # implies the exercise exists | + | 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 //exercises/exercise[id]/open && exists //accounts/account[uid]/student && //accounts/account[uid]/student/id = studentId || | + | assume exists //exercises/exercise[id]/students/student[studentId]; # implies the exercise exists |
- | exists //accounts/account[uid]/assistant[id]; # the right management can't come first here | + | |
assume size(//exercises/exercise[id]/students/student[studentId]/result) = 0; # don't allow unregistering if results are there | assume size(//exercises/exercise[id]/students/student[studentId]/result) = 0; # don't allow unregistering if results are there | ||
+ | assume not exists //exercises/exercise[id]/students/student[studentId]/group; # don't allow if signed in a group | ||
| | ||
remove //exercises/exercise[id]/students/student[studentId]; | remove //exercises/exercise[id]/students/student[studentId]; | ||
} | } | ||
</code> | </code> |