Re: plperl vs. bytea

Andrew Dunstan schrieb:
> 
> 
> Tino Wildenhain wrote:
>> Martijn van Oosterhout schrieb:
>> ...
>> > I do have one problem though: for bytea/integers/floats Perl has
>> > appropriate internel representations. But what about other user-defined
>> > types? Say the user-defined UUID type, it should probably also passed
>> > by a byte string, yet how could Perl know that. That would imply that
>> > user-defined types need to be able to specify how they are passed to
>> > PLs, to *any* PL.
>> >
>> Yes exactly. One way could be to pass the type binary and provide
>> a hull class for the PL/languages which then call the input/output
>> routines on the string boundaries of the type unless overridden by
>> user implementation. So default handling could be done in string
>> representation of the type whatever that is and for a defined set
>> of types every pl/language could implement special treatment like
>> mapping to natural types.
>>
>> This handling can be done independently for every pl implementation
>> since it would for the most types just move the current type treatment
>> just a bit closer to the user code instead of doing all of it
>> in the call handler.
>>
>> 2nd problem is language interface for outside of the database scripting.
>> Efficient and lossless type handling there would improve some
>> situations - maybe a similar approach could be taken here.
>>
>>
> 
> This seems like an elaborate piece of scaffolding for a relatively small 
> problem.
> 
> This does not need to be over-engineered, IMNSHO.

Well could you explain where it would appear over-engineered?
All I was proposing is to move the rather hard-coded
type mapping to a softer approach where the language
is able to support it.

Is there any insufficience in perl which makes it harder to
do in a clean way?

Regards
Tino