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definition:
|
updateEntries :: EntityDescription a -> [ColVal] -> Constraint -> DBAction ()
updateEntries en (ColVal cl val : ys) const =
let query = "update '" ++ (getTable en) ++ "' set " ++
foldl
(\a (ColVal c v) ->
a ++ ", " ++ (getColumnSimple c)
++ " = " ++ (trValue v))
(getColumnSimple cl ++ " = " ++ trValue val)
ys ++
" " ++ trCriteria (Criteria const Nothing) ++ ";"
in execute query []
|
|
demand:
|
argument 2
|
|
deterministic:
|
deterministic operation
|
|
documentation:
|
--- Updates entries depending on wether they fulfill the criteria or not
--- @param en - The EntityDescription descriping the Entities that are to be
--- updated
--- @param xs - A list of ColVal that descripe the columns that should be
--- updated and which values are to be inserted into them
--- @param const - A Constraint can be be given as input which describes
--- which entities should be updated. Only entities fulfilling the constraint
--- will be updated. Nothing updates every entry.
--- @return A Result without parameter if everything went right,
--- an Error if something went wrong
|
|
failfree:
|
<FAILING>
|
|
indeterministic:
|
referentially transparent operation
|
|
infix:
|
no fixity defined
|
|
iotype:
|
{(_,{:},_) |-> _}
|
|
name:
|
updateEntries
|
|
precedence:
|
no precedence defined
|
|
result-values:
|
_
|
|
signature:
|
Database.CDBI.Description.EntityDescription a -> [Database.CDBI.Criteria.ColVal]
-> Database.CDBI.Criteria.Constraint -> 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
|