1 files changed, 0 insertions, 66 deletions
diff --git a/lib/arel/algebra/header.rb b/lib/arel/algebra/header.rb
deleted file mode 100644
index dc779d53c3..0000000000
--- a/lib/arel/algebra/header.rb
+++ /dev/null
@@ -1,66 +0,0 @@
-module Arel
-  class Header
-    include Enumerable
-
-    def initialize(attrs = [])
-      @attributes = attrs.to_ary
-      @names      = {}
-    end
-
-    def each
-      to_ary.each { |e| yield e }
-      self
-    end
-
-    def [](key)
-      case key
-      when String, Symbol then find_by_name(key)
-      when Attribute      then find_by_attribute(key)
-      end
-    end
-
-    def ==(other)
-      to_set == other.to_set
-    end
-
-    def union(other)
-      new(to_ary | other)
-    end
-
-    alias | union
-
-    def to_ary
-      @attributes
-    end
-
-    def bind(relation)
-      Header.new(map { |a| a.bind(relation) })
-    end
-
-    # TMP
-    def index(i)
-      to_ary.index(i)
-    end
-
-  private
-
-    def new(attrs)
-      self.class.new(attrs)
-    end
-
-    def matching(attribute)
-      select { |a| !a.is_a?(Value) && a.root == attribute.root }
-    end
-
-    def find_by_name(name)
-      k = name.to_sym
-      @names[k] ||= @attributes.detect { |a| a.named?(k) }
-    end
-
-    def find_by_attribute(attr)
-      matching(attr).max do |a, b|
-        (a.original_attribute / attr) <=> (b.original_attribute / attr)
-      end
-    end
-  end
-end