Taepper commented on code in PR #46926:
URL: https://github.com/apache/arrow/pull/46926#discussion_r2726555077
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ruby/red-arrow/lib/arrow/sort-key.rb:
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@@ -156,32 +157,49 @@ def initialize(target, order=nil)
#
# @since 4.0.0
def to_s
- if order == SortOrder::ASCENDING
+ result = if order == SortOrder::ASCENDING
"+#{target}"
else
"-#{target}"
end
+ if null_placement == NullPlacement::AT_START
+ result += "_at_start"
+ else
+ result += "_at_end"
+ end
+ return result
end
# For backward compatibility
alias_method :name, :target
private
- def normalize_target(target, order)
+ def normalize_target(target, order, null_placement)
+ # for recreatable, we should remove suffix
+ if target.end_with?("_at_start")
+ suffix_length = "_at_start".length
+ target = target[0..-(suffix_length + 1)]
+ elsif target.end_with?("_at_end")
+ suffix_length = "_at_end".length
+ target = target[0..-(suffix_length + 1)]
+ end
Review Comment:
In this example, the `^` is part of the target name. (sort order and
null-placement are only parsed from the beginning of the target if not
explicitly given)
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