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From: Ivan Sergio Borgonovo on 28 Jan 2010 19:00
I'm trying to return a set of record as:
(text, int[]),
(text, int[]),
....
row from C
and I really would like to avoid to use BuildTupleFromCString

So this is how I think my function should end...

char *curout; /* cstring */
int4 *pos;

....

get_typlenbyvalalign(INT4OID, &typlen, &typbyval, &typalign);
v_pos = construct_array(
pos,
npos,
INT4OID, typlen, typbyval, typalign
);

values[0] = GET_TEXT(curout); /* correct? */
values[1] = PointerGetDatum(v_pos); /* ???? */

resultTuple = heap_form_tuple(inter_call_data->tupd, values, nulls);
result = HeapTupleGetDatum(resultTuple);

SRF_RETURN_NEXT(fctx, result);

....

I've seen that GET_TEXT(curout) just call textin.
I wonder if other GET_ macro aren't really converting to text
representation and then back to Datum... so there is no real
difference with using BuildTupleFromCString.

BTW could I pass static values to construct_array since they are
"basic type" array so the size etc... should be known at compile
time, inspite of having to call get_typlenbyvalalign?

thanks

--
Ivan Sergio Borgonovo
http://www.webthatworks.it


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