| definition: |
hasForeignKey :: String -> Entity -> Bool
hasForeignKey ename (Entity _ attrs) = any isForeignKeyWithName attrs
where
isForeignKeyWithName (Attribute _ d _ _) = case d of KeyDom n -> n==ename
_ -> False
|
| demand: |
argument 2 |
| deterministic: |
deterministic operation |
| documentation: |
--- Has the entity an attribute with a foreign key for a given entity name? |
| failfree: |
(_, _) |
| indeterministic: |
referentially transparent operation |
| infix: |
no fixity defined |
| iotype: |
{(_,{Entity}) |-> _}
|
| name: |
hasForeignKey |
| precedence: |
no precedence defined |
| result-values: |
_ |
| signature: |
String -> Database.ERD.Entity -> Prelude.Bool |
| solution-complete: |
operation might suspend on free variables |
| terminating: |
possibly non-terminating |
| totally-defined: |
reducible on all ground data terms |