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stats:proc:signupgroup [2011/09/29 00:38] Patrick Michel |
stats:proc:signupgroup [2011/10/15 20:19] Patrick Michel |
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<code xcend> | <code xcend> | ||
- | signUpGroup(ident id, ident studentId, ident groupId) { | + | signUpGroup(ident uid, ident id, ident studentId, ident groupId) { |
+ | 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]; # implies the existence of the exercise | assume exists //exercises/exercise[id]/students/student[studentId]; # implies the existence of the exercise | ||
assume exists //exercises/exercise[id]/groups/group[groupId]; # also implies it, but once is really enough | assume exists //exercises/exercise[id]/groups/group[groupId]; # also implies it, but once is really enough | ||
| | ||
assume not exists //exercises/exercise[id]/students/student[studentId]/group; | assume not exists //exercises/exercise[id]/students/student[studentId]/group; | ||
- | assume count(groupId, //exercises/exercise[id]/students/student/group) < //exercises/exercise[id]/groups/group[groupId]/maxSize; | + | assume //exercises/exercise[id]/groups/group[groupId]/curSize < //exercises/exercise[id]/groups/group[groupId]/maxSize; |
| | ||
insert //exercises/exercise[id]/students/student[studentId]/group groupId; | insert //exercises/exercise[id]/students/student[studentId]/group groupId; | ||
- | } # roles: assistant[id], student[studentId] | + | update //exercises/exercise[id]/groups/group[groupId]/curSize (//exercises/exercise[id]/groups/group[groupId]/curSize + 1); |
+ | } | ||
</code> | </code> |