stats:proc:signupgroup
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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stats:proc:signupgroup [2011/09/29 19:37] Patrick Michel |
stats:proc:signupgroup [2013/07/10 12:34] (current) |
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| <code xcend> | <code xcend> | ||
| signUpGroup(ident uid, ident id, ident studentId, ident groupId) { | signUpGroup(ident uid, ident id, ident studentId, ident groupId) { | ||
| - | assume exists //accounts/account[uid]/assistant[id] || //accounts/account[uid]/student/id = studentId; | + | assume exists /exercise[id] && /exercise[id]/open && |
| + | exists /account[uid]/student && /account[uid]/student/id = studentId | ||
| + | || exists /account[uid]/assistant[id]; | ||
| + | |||
| + | assume exists /exercise[id]/student[studentId]; # implies the existence of the exercise | ||
| + | assume exists /exercise[id]/group[groupId]; # also implies it, but once is really enough | ||
| | | ||
| - | assume exists //exercises/exercise[id]/students/student[studentId]; # implies the existence of the exercise | + | assume not exists /exercise[id]/student[studentId]/group; |
| - | assume exists //exercises/exercise[id]/groups/group[groupId]; # also implies it, but once is really enough | + | assume /exercise[id]/group[groupId]/curSize < /exercise[id]/group[groupId]/maxSize; |
| | | ||
| - | assume not exists //exercises/exercise[id]/students/student[studentId]/group; | + | insert /exercise[id]/student[studentId]/group groupId; |
| - | assume //exercises/exercise[id]/groups/group[groupId]/curSize < //exercises/exercise[id]/groups/group[groupId]/maxSize; | + | update /exercise[id]/group[groupId]/curSize (/exercise[id]/group[groupId]/curSize + 1); |
| - | + | ||
| - | insert //exercises/exercise[id]/students/student[studentId]/group groupId; | + | |
| - | update //exercises/exercise[id]/groups/group[groupId]/curSize (//exercises/exercise[id]/groups/group[groupId]/curSize + 1); | + | |
| } | } | ||
| </code> | </code> | ||
stats/proc/signupgroup.1317317827.txt.gz · Last modified: 2011/09/29 19:37 by Patrick Michel
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