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rails--rails/activerecord/lib/arel/nodes.rb
Ryuta Kamizono b1356cb2fa Implement equality? rather than inheriting Equality for In node
Related #39644.

Historically subclasses of `Equality` has a special equality ability,
but it has migrated to `equality?` method.

Since we have added `HomogeneousIn`, `Equality === node` could no longer
detect all equality nodes, we should check the response of `equality?`
method for the purpose.

Originally, it wasn't common understanding that the `In` node was a
subclass of the `Equality` node, so it was unclear whether
`Equality === node` really wanted to detect the `In` node as well.

As another problem, we need to check `In === node` first if intend to
detect only `Equality` node.

Example:

4148590ed9/activerecord/lib/active_record/relation/where_clause.rb (L98-L103)

This solves the problems described above.
2020-06-21 07:35:17 +09:00

70 lines
1.7 KiB
Ruby

# frozen_string_literal: true
# node
require "arel/nodes/node"
require "arel/nodes/node_expression"
require "arel/nodes/select_statement"
require "arel/nodes/select_core"
require "arel/nodes/insert_statement"
require "arel/nodes/update_statement"
require "arel/nodes/bind_param"
# terminal
require "arel/nodes/terminal"
require "arel/nodes/true"
require "arel/nodes/false"
# unary
require "arel/nodes/unary"
require "arel/nodes/grouping"
require "arel/nodes/homogeneous_in"
require "arel/nodes/ordering"
require "arel/nodes/ascending"
require "arel/nodes/descending"
require "arel/nodes/unqualified_column"
require "arel/nodes/with"
# binary
require "arel/nodes/binary"
require "arel/nodes/equality"
require "arel/nodes/in"
require "arel/nodes/join_source"
require "arel/nodes/delete_statement"
require "arel/nodes/table_alias"
require "arel/nodes/infix_operation"
require "arel/nodes/unary_operation"
require "arel/nodes/over"
require "arel/nodes/matches"
require "arel/nodes/regexp"
# nary
require "arel/nodes/and"
# function
# FIXME: Function + Alias can be rewritten as a Function and Alias node.
# We should make Function a Unary node and deprecate the use of "aliaz"
require "arel/nodes/function"
require "arel/nodes/count"
require "arel/nodes/extract"
require "arel/nodes/values_list"
require "arel/nodes/named_function"
# windows
require "arel/nodes/window"
# conditional expressions
require "arel/nodes/case"
# joins
require "arel/nodes/full_outer_join"
require "arel/nodes/inner_join"
require "arel/nodes/outer_join"
require "arel/nodes/right_outer_join"
require "arel/nodes/string_join"
require "arel/nodes/comment"
require "arel/nodes/sql_literal"
require "arel/nodes/casted"