XiangpengHao commented on code in PR #6044:
URL: https://github.com/apache/arrow-rs/pull/6044#discussion_r1676864802
##########
arrow-row/src/variable.rs:
##########
@@ -243,6 +244,88 @@ pub fn decode_binary<I: OffsetSizeTrait>(
unsafe { GenericBinaryArray::from(builder.build_unchecked()) }
}
+fn decode_binary_view_inner(
+ rows: &mut [&[u8]],
+ options: SortOptions,
+ check_utf8: bool,
+) -> BinaryViewArray {
+ let len = rows.len();
+
+ let mut null_count = 0;
+
+ let nulls = MutableBuffer::collect_bool(len, |x| {
+ let valid = rows[x][0] != null_sentinel(options);
+ null_count += !valid as usize;
+ valid
+ });
+
+ let values_capacity: usize = rows.iter().map(|row| decoded_len(row,
options)).sum();
+ let mut values = MutableBuffer::new(values_capacity);
+ let mut views = BufferBuilder::<u128>::new(len);
+
+ for row in rows {
+ let start_offset = values.len();
+ let offset = decode_blocks(row, options, |b|
values.extend_from_slice(b));
+ if row[0] == null_sentinel(options) {
+ debug_assert_eq!(offset, 1);
+ debug_assert_eq!(start_offset, values.len());
+ views.append(0);
+ } else {
+ let view = make_view(
+ unsafe { values.get_unchecked(start_offset..) },
+ 0,
+ start_offset as u32,
+ );
+ views.append(view);
+ }
+ *row = &row[offset..];
+ }
+
+ if options.descending {
+ values.as_slice_mut().iter_mut().for_each(|o| *o = !*o);
+ for view in views.as_slice_mut() {
Review Comment:
done
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