2012/2/1 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
>> I looked to sources and I found a some useful routines for people who
>> write extensions and probably PL too.
>> There are datum_compute_size and datum_write from range_types.c. These
>> routines can be used in PL libs and maybe in other places.
>> Should be these routines moved to varlena.c and be public?
> Why? It is not common for types to contain other types, and it
> certainly isn't likely to happen without needing lots of other
> infrastructure --- the existing examples are arrays, records, and
> rangetypes, and all of those come with lots of baggage. And there
> are a number of choices in those functions that are pretty specific to
> rangetypes, as illustrated by the fact that they're not already sharing
> code with either arrays or records.
For example I can use this code in my implementation of set of enum
(enumset datatype) because I have to wrap a array sometimes (I reuse a
In orafce I can use this code for serialisation and deserialisation
Datums - it is used more times there
> regards, tom lane
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