# frozen_string_literal: true require "arel/errors" require "arel/crud" require "arel/factory_methods" require "arel/expressions" require "arel/predications" require "arel/window_predications" require "arel/math" require "arel/alias_predication" require "arel/order_predications" require "arel/table" require "arel/attributes/attribute" require "arel/visitors" require "arel/collectors/sql_string" require "arel/tree_manager" require "arel/insert_manager" require "arel/select_manager" require "arel/update_manager" require "arel/delete_manager" require "arel/nodes" module Arel VERSION = "10.0.0" # Wrap a known-safe SQL string for passing to query methods, e.g. # # Post.order(Arel.sql("length(title)")).last # # Great caution should be taken to avoid SQL injection vulnerabilities. # This method should not be used with unsafe values such as request # parameters or model attributes. def self.sql(raw_sql) Arel::Nodes::SqlLiteral.new raw_sql end def self.star # :nodoc: sql "*" end def self.arel_node?(value) # :nodoc: value.is_a?(Arel::Node) || value.is_a?(Arel::Attribute) || value.is_a?(Arel::Nodes::SqlLiteral) end def self.fetch_attribute(value) # :nodoc: case value when Arel::Nodes::Between, Arel::Nodes::In, Arel::Nodes::NotIn, Arel::Nodes::Equality, Arel::Nodes::NotEqual, Arel::Nodes::LessThan, Arel::Nodes::LessThanOrEqual, Arel::Nodes::GreaterThan, Arel::Nodes::GreaterThanOrEqual yield value.left.is_a?(Arel::Attributes::Attribute) ? value.left : value.right end end ## Convenience Alias Node = Arel::Nodes::Node # :nodoc: end