felipecrv commented on code in PR #35149:
URL: https://github.com/apache/arrow/pull/35149#discussion_r1169112534
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cpp/src/arrow/array/data.h:
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@@ -434,16 +455,36 @@ struct ARROW_EXPORT ArraySpan {
inline bool IsValid(int64_t i) const {
if (this->buffers[0].data != NULLPTR) {
return bit_util::GetBit(this->buffers[0].data, i + this->offset);
+ }
+ const auto type = this->type->id();
+ if (type == Type::SPARSE_UNION) {
+ return !IsNullSparseUnion(i);
+ } else if (type == Type::DENSE_UNION) {
+ return !IsNullDenseUnion(i);
+ } else if (type == Type::RUN_END_ENCODED) {
+ return !IsNullRunEndEncoded(i);
+ }
+ return this->null_count != this->length;
+ }
+
+ template <typename ArrowType>
+ inline bool IsNullFast(int64_t i) const {
+ return !IsValidFast<ArrowType>(i);
+ }
+
+ template <typename ArrowType>
+ inline bool IsValidFast(int64_t i) const {
+ if constexpr (ArrowType::type_id == Type::NA) {
Review Comment:
I was tempted, but it adds too high of an overhead for this function as it's
used from tight loops and is expected to be fully inlined. Even considering
that it would be affecting only debug builds.
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