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author | Matthew Draper <matthew@trebex.net> | 2018-02-24 17:04:15 +1030 |
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committer | Matthew Draper <matthew@trebex.net> | 2018-02-24 17:15:32 +1030 |
commit | 17ca17072dcdff11b3702a6b45f2fb0c8f8fe9a4 (patch) | |
tree | 38afd3ed74f8afda1c2959fefbc13f70b2e448e2 /activerecord/lib/arel/nodes/select_core.rb | |
parent | 5ecbeda0e225e4961977b5c516088cf12d92319f (diff) | |
parent | eb3f968b5ffdd3b343e7d190f1aa0b36864f56a2 (diff) | |
download | rails-17ca17072dcdff11b3702a6b45f2fb0c8f8fe9a4.tar.gz rails-17ca17072dcdff11b3702a6b45f2fb0c8f8fe9a4.tar.bz2 rails-17ca17072dcdff11b3702a6b45f2fb0c8f8fe9a4.zip |
Merge Arel into Active Record
Diffstat (limited to 'activerecord/lib/arel/nodes/select_core.rb')
-rw-r--r-- | activerecord/lib/arel/nodes/select_core.rb | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/activerecord/lib/arel/nodes/select_core.rb b/activerecord/lib/arel/nodes/select_core.rb new file mode 100644 index 0000000000..fa1c026107 --- /dev/null +++ b/activerecord/lib/arel/nodes/select_core.rb @@ -0,0 +1,64 @@ +# frozen_string_literal: true +module Arel + module Nodes + class SelectCore < Arel::Nodes::Node + attr_accessor :top, :projections, :wheres, :groups, :windows + attr_accessor :havings, :source, :set_quantifier + + def initialize + super() + @source = JoinSource.new nil + @top = nil + + # https://ronsavage.github.io/SQL/sql-92.bnf.html#set%20quantifier + @set_quantifier = nil + @projections = [] + @wheres = [] + @groups = [] + @havings = [] + @windows = [] + end + + def from + @source.left + end + + def from= value + @source.left = value + end + + alias :froms= :from= + alias :froms :from + + def initialize_copy other + super + @source = @source.clone if @source + @projections = @projections.clone + @wheres = @wheres.clone + @groups = @groups.clone + @havings = @havings.clone + @windows = @windows.clone + end + + def hash + [ + @source, @top, @set_quantifier, @projections, + @wheres, @groups, @havings, @windows + ].hash + end + + def eql? other + self.class == other.class && + self.source == other.source && + self.top == other.top && + self.set_quantifier == other.set_quantifier && + self.projections == other.projections && + self.wheres == other.wheres && + self.groups == other.groups && + self.havings == other.havings && + self.windows == other.windows + end + alias :== :eql? + end + end +end |