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590c784a30
This removes the need for us to do the re-ordering by walking the AST in ActiveRecord. We're using a block to communicate with the collector, since the collector needs to be the thing which knows about the index, while the visitor is the thing that needs to know the syntax. The BindParam needs to know about neither of these things, so it's been changed to stop being a subclass of SqlLiteral I could also see an alternative implementation using format strings if for some reason blocks cause a problem.
95 lines
2.3 KiB
Ruby
95 lines
2.3 KiB
Ruby
# node
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require 'arel/nodes/node'
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require 'arel/nodes/select_statement'
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require 'arel/nodes/select_core'
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require 'arel/nodes/insert_statement'
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require 'arel/nodes/update_statement'
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require 'arel/nodes/bind_param'
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# terminal
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require 'arel/nodes/terminal'
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require 'arel/nodes/true'
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require 'arel/nodes/false'
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# unary
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require 'arel/nodes/unary'
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require 'arel/nodes/grouping'
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require 'arel/nodes/ascending'
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require 'arel/nodes/descending'
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require 'arel/nodes/unqualified_column'
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require 'arel/nodes/with'
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# binary
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require 'arel/nodes/binary'
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require 'arel/nodes/equality'
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require 'arel/nodes/in' # Why is this subclassed from equality?
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require 'arel/nodes/join_source'
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require 'arel/nodes/delete_statement'
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require 'arel/nodes/table_alias'
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require 'arel/nodes/infix_operation'
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require 'arel/nodes/over'
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require 'arel/nodes/matches'
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# nary
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require 'arel/nodes/and'
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# function
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# FIXME: Function + Alias can be rewritten as a Function and Alias node.
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# We should make Function a Unary node and deprecate the use of "aliaz"
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require 'arel/nodes/function'
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require 'arel/nodes/count'
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require 'arel/nodes/extract'
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require 'arel/nodes/values'
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require 'arel/nodes/named_function'
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# windows
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require 'arel/nodes/window'
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# joins
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require 'arel/nodes/full_outer_join'
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require 'arel/nodes/inner_join'
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require 'arel/nodes/outer_join'
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require 'arel/nodes/right_outer_join'
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require 'arel/nodes/string_join'
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require 'arel/nodes/sql_literal'
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module Arel
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module Nodes
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class Casted < Arel::Nodes::Node # :nodoc:
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attr_reader :val, :attribute
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def initialize val, attribute
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@val = val
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@attribute = attribute
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super()
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end
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def nil?; @val.nil?; end
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def eql? other
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self.class == other.class &&
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self.val == other.val &&
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self.attribute == other.attribute
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end
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alias :== :eql?
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end
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class Quoted < Arel::Nodes::Unary # :nodoc:
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end
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def self.build_quoted other, attribute = nil
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case other
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when Arel::Nodes::Node, Arel::Attributes::Attribute, Arel::Table, Arel::Nodes::BindParam, Arel::SelectManager
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other
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else
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case attribute
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when Arel::Attributes::Attribute
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Casted.new other, attribute
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else
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Quoted.new other
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end
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end
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end
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end
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end
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