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This commit is contained in:
Daniel Hutzel
2025-07-16 17:25:32 +02:00
parent 4fc324c7fb
commit 04d659c9c2
1 changed files with 5 additions and 3 deletions
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8
bookshop/srv/x-validation.cds
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@@ -28,9 +28,9 @@ view Books.constraints as select from Books { ID,
null as genre, null as genre,
// multiple constraints: mandatory + assert target + special // multiple constraints: mandatory + assert target + special
author.ID is null ? 'is missing' : // FIXME: 1) // TODO: 2)
not exists author ? 'Author does not exist: ' || author.ID : not exists author ? 'Author does not exist: ' || author.ID :
author.ID is null ? 'is missing' : // FIXME: 1) count(author.books.ID) -1 > 1 ? author.name || ' already wrote too many books' : // TODO: 3)
count(author.books.ID) -1 > 1 ? author.name || ' already wrote too many books' : // TODO: 2)
null as author, null as author,
} group by ID; } group by ID;
@@ -39,7 +39,9 @@ view Books.constraints as select from Books { ID,
// apparently that is not the case -> move one line up // apparently that is not the case -> move one line up
// and run test to see the erroneous impact. // and run test to see the erroneous impact.
// 2) TODO: we should support count(author.books) // 2) TODO: we should allow to write author is null instead of author.ID is null
// 3) TODO: we should support count(author.books)
/** /**