mapleFU commented on issue #46555:
URL: https://github.com/apache/arrow/issues/46555#issuecomment-2904893130
@zeroshade This builder api sounds ok to me for primitive api, though I
found maybe only integer will use smallest ( can float/double cannot distinct
it fits the smallest type? Perhaps not? )
I also wonder what the decimal value in builder api would be like, since
arrow doesn't have Java's `BigDecimal` type. I draft a
```
template<typename ArrowDecimalType>
struct DecimalValue {
ArrowDecimalType decimal;
uint8_t scale;
};
```
What would here better being?
Also, I've list a part for output and internal buffer handling. Arena like
data structure would be used here. Previously I've think how to do think of
reusing buffer and making build array of Variant vectorization. But now I found
it's complex to vectorize building a so complex type. So maybe I should focous
on reuse buffer and decrease dynamic buffer allocation
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