|
definition:
|
deleteEntry :: EntityDescription a -> Column k -> (a -> Value k) -> a
-> DBAction ()
deleteEntry endescr keycolumn keyval entity =
deleteEntries endescr (Just (equal (colNum keycolumn 0) (keyval entity)))
|
|
demand:
|
no demanded arguments
|
|
deterministic:
|
deterministic operation
|
|
documentation:
|
--- Deletes an existing entry from the database.
--- @param endescr - the EntityDescription describing the entities to be deleted
--- @param keycolumn - the column containing the primary key
--- @param keyval - the mapping from entities to their primary keys as SQL vals
--- @param entity - the entity to be deleted
--- @return a DB result without a value if everything went right, or an
--- error if something went wrong
|
|
failfree:
|
<FAILING>
|
|
indeterministic:
|
referentially transparent operation
|
|
infix:
|
no fixity defined
|
|
iotype:
|
{(_,_,_,_) |-> _}
|
|
name:
|
deleteEntry
|
|
precedence:
|
no precedence defined
|
|
result-values:
|
_
|
|
signature:
|
Database.CDBI.Description.EntityDescription a
-> Database.CDBI.Description.Column b -> (a -> Database.CDBI.Criteria.Value b)
-> a -> Database.CDBI.Connection.DBAction ()
|
|
solution-complete:
|
operation might suspend on free variables
|
|
terminating:
|
possibly non-terminating
|
|
totally-defined:
|
possibly non-reducible on same data term
|