diff options
Diffstat (limited to 'lib/ur/basis.urs')
| -rw-r--r-- | lib/ur/basis.urs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/ur/basis.urs b/lib/ur/basis.urs index 997495b1..d69ddfcb 100644 --- a/lib/ur/basis.urs +++ b/lib/ur/basis.urs @@ -161,10 +161,37 @@ val join_constraints : fs ::: {Type} => sql_constraints fs uniques1 -> sql_constraints fs uniques2 -> sql_constraints fs (uniques1 ++ uniques2) + val unique : rest ::: {Type} -> t ::: Type -> unique1 :: Name -> unique :: {Type} -> [[unique1] ~ unique] => [[unique1 = t] ++ unique ~ rest] => sql_constraint ([unique1 = t] ++ unique ++ rest) ([unique1] ++ map (fn _ => ()) unique) +con matching :: {Type} -> {Type} -> Type +val mat_nil : matching [] [] +val mat_cons : t ::: Type -> rest1 ::: {Type} -> rest2 ::: {Type} + -> nm1 :: Name -> nm2 :: Name + -> [[nm1] ~ rest1] => [[nm2] ~ rest2] + => matching rest1 rest2 + -> matching ([nm1 = t] ++ rest1) ([nm2 = t] ++ rest2) + +con propagation_mode :: {Type} -> Type +val restrict : fs ::: {Type} -> propagation_mode fs +val cascade : fs ::: {Type} -> propagation_mode fs +val no_action : fs ::: {Type} -> propagation_mode fs +val set_null : fs ::: {Type} -> propagation_mode (map option fs) + + +val foreign_key : mine1 ::: Name -> t ::: Type -> mine ::: {Type} -> munused ::: {Type} + -> foreign ::: {Type} -> funused ::: {Type} + -> nm ::: Name -> uniques ::: {{Unit}} + -> [[mine1] ~ mine] => [[mine1 = t] ++ mine ~ munused] + => [foreign ~ funused] => [[nm] ~ uniques] + => matching ([mine1 = t] ++ mine) foreign + -> sql_table (foreign ++ funused) ([nm = map (fn _ => ()) foreign] ++ uniques) + -> {OnDelete : propagation_mode ([mine1 = t] ++ mine), + OnUpdate : propagation_mode ([mine1 = t] ++ mine)} + -> sql_constraint ([mine1 = t] ++ mine ++ munused) [] + (*** Queries *) |