moved sql related code to its own engine area

Conflicts:

	lib/arel/engine.rb
	lib/arel/extensions/object.rb
	lib/arel/predicates.rb
	lib/arel/primitives/attribute.rb
	lib/arel/primitives/expression.rb
	lib/arel/primitives/value.rb
	lib/arel/relations/operations/join.rb
	lib/arel/relations/relation.rb
	lib/arel/relations/utilities/externalization.rb
	lib/arel/relations/utilities/nil.rb
	lib/arel/relations/writes/delete.rb
	lib/arel/relations/writes/insert.rb
	lib/arel/relations/writes/update.rb
	spec/arel/unit/relations/skip_spec.rb
	spec/arel/unit/relations/take_spec.rb
	spec/spec_helper.rb

1 files changed, 0 insertions, 19 deletions

diff --git a/lib/arel/relations/array.rb b/lib/arel/relations/array.rb
deleted file mode 100644
index dac65abbc2..0000000000
--- a/lib/arel/relations/array.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-module Arel
-  class Array < Relation
-    include Recursion::BaseCase
-
-    def initialize(array, attribute_names)
-      @array, @attribute_names = array, attribute_names
-    end
-
-    def attributes
-      @attributes ||= @attribute_names.collect do |name|
-        Attribute.new(self, name.to_sym)
-      end
-    end
-
-    def call(connection = nil)
-      @array.collect { |row| attributes.zip(row).to_hash }
-    end
-  end
-end
\ No newline at end of file