class Sequel::Postgres::JSONBSubscriptOp

Represents JSONB subscripts. This is abstracted because the subscript support depends on the database version.

Constants

SUBSCRIPT

Attributes

expression[R]

The expression being subscripted

sub[R]

The subscript to use

Public Class Methods

new(expression, sub) click to toggle source

Set the expression and subscript to the given arguments

    # File lib/sequel/extensions/pg_json_ops.rb
689 def initialize(expression, sub)
690   @expression = expression
691   @sub = sub
692   freeze
693 end

Public Instance Methods

sequel_ast_transform(transformer) click to toggle source

Support transforming of jsonb subscripts

    # File lib/sequel/extensions/pg_json_ops.rb
703 def sequel_ast_transform(transformer)
704   self.class.new(transformer.call(@expression), transformer.call(@sub))
705 end
to_s_append(ds, sql) click to toggle source

Use subscripts instead of -> operator on PostgreSQL 14+

    # File lib/sequel/extensions/pg_json_ops.rb
696 def to_s_append(ds, sql)
697   server_version = ds.db.server_version
698   frag = server_version && server_version >= 140000 ? SUBSCRIPT : JSONOp::GET
699   ds.literal_append(sql, Sequel::SQL::PlaceholderLiteralString.new(frag, [@expression, @sub]))
700 end