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| author | Rolf Timmermans <r.timmermans@voormedia.com> | 2010-11-17 22:23:33 +0800 |
|---|---|---|
| committer | Aaron Patterson <aaron.patterson@gmail.com> | 2010-11-18 00:37:16 +0800 |
| commit | 9244e2ddbd5dbfb32f892bdfc23a928aa06999a5 (patch) | |
| tree | 5588197d71722fd93430d1f0fbb027e0f4c45724 /lib/arel | |
| parent | 35f25f643cca00c192d971234942d5a0d0e07cc0 (diff) | |
| download | rails-9244e2ddbd5dbfb32f892bdfc23a928aa06999a5.tar.gz rails-9244e2ddbd5dbfb32f892bdfc23a928aa06999a5.tar.bz2 rails-9244e2ddbd5dbfb32f892bdfc23a928aa06999a5.zip | |
Fixed Ruby 1.8 performance regression for Nodes::In and Nodes::NotIn queries with very wide ranges that was caused by using Range#min and Range#max rather than Range#begin and Range#end. Ruby 1.8 uses Enumerable#min and Enumerable#max in Ranges, which calls to_a internally. It is not necessary to enumerate the range in order to construct the predicates. At the same time, an off-by-one error (failing test) with exclusive-end Ranges in Nodes::NotIn queries was fixed.
Diffstat (limited to 'lib/arel')
| -rw-r--r-- | lib/arel/predications.rb | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/lib/arel/predications.rb b/lib/arel/predications.rb index 8a8960f0b1..03cbb7aa3f 100644 --- a/lib/arel/predications.rb +++ b/lib/arel/predications.rb @@ -30,11 +30,11 @@ module Arel Nodes::In.new self, other.to_a.map { |x| x.id } when Range if other.exclude_end? - left = Nodes::GreaterThanOrEqual.new(self, other.min) - right = Nodes::LessThan.new(self, other.max + 1) + left = Nodes::GreaterThanOrEqual.new(self, other.begin) + right = Nodes::LessThan.new(self, other.end) Nodes::And.new left, right else - Nodes::Between.new(self, Nodes::And.new(other.min, other.max)) + Nodes::Between.new(self, Nodes::And.new(other.begin, other.end)) end else Nodes::In.new self, other @@ -55,12 +55,12 @@ module Arel Nodes::NotIn.new self, other.to_a.map { |x| x.id } when Range if other.exclude_end? - left = Nodes::LessThan.new(self, other.min) - right = Nodes::GreaterThanOrEqual.new(self, other.max) + left = Nodes::LessThan.new(self, other.begin) + right = Nodes::GreaterThanOrEqual.new(self, other.end) Nodes::Or.new left, right else - left = Nodes::LessThan.new(self, other.min) - right = Nodes::GreaterThan.new(self, other.max) + left = Nodes::LessThan.new(self, other.begin) + right = Nodes::GreaterThan.new(self, other.end) Nodes::Or.new left, right end else |