Class: ActiveRecord::Refined::AST::JsonLiteral

Inherits:
Node
  • Object
show all
Defined in:
lib/active_record/refined/ast.rb

Overview

A Ruby value on the JSON side of a comparison, which jsonb and MySQL's JSON type answer alike: numbers compare as numbers and documents structurally. SQLite and MariaDB have only the text of each -- spelling and key order deciding what equality means -- and refuse here. PostgreSQL needs no cast, an untyped literal beside a jsonb operand coercing to jsonb; MySQL is told CAST(... AS JSON), since a bare string beside JSON would be a JSON string, and every string outranks every number in its ordering.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Node

#as, #asc, #desc

Constructor Details

#initialize(value) ⇒ JsonLiteral

Returns a new instance of JsonLiteral.



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# File 'lib/active_record/refined/ast.rb', line 772

def initialize(value)
  @value = value
end

Instance Attribute Details

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/active_record/refined/ast.rb', line 770

def value
  @value
end

Instance Method Details

#to_arel(_table, model) ⇒ Object 



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# File 'lib/active_record/refined/ast.rb', line 776

def to_arel(_table, model)
  json = Arel::Nodes.build_quoted(JSON.generate(value))
  case AST.adapter_family(model)
  when :postgresql then json
  when :mysql then mysql_literal(json, model)
  else refuse(model.connection_db_config.adapter)
  end
end