Class: Sequel::SQL::PlaceholderLiteralString

Inherits:

Expression

• Object
• Expression
• Sequel::SQL::PlaceholderLiteralString

Defined in:

lib/sequel/sql.rb

Overview

Represents a literal string with placeholders and arguments. This is necessary to ensure delayed literalization of the arguments required for the prepared statement support

Instance Attribute Summary

• #args ⇒ Object readonly

  The arguments that will be subsituted into the placeholders.

• #parens ⇒ Object readonly

  Whether to surround the expression with parantheses.

• #str ⇒ Object readonly

  The literal string containing placeholders.

Instance Method Summary

• #initialize(str, args, parens = false) ⇒ PlaceholderLiteralString constructor

  Create an object with the given string, placeholder arguments, and parens flag.

Methods inherited from Expression

#==, attr_reader, comparison_attrs, #eql?, #hash, #lit, #sql_literal

Constructor Details

#initialize(str, args, parens = false) ⇒ PlaceholderLiteralString

Create an object with the given string, placeholder arguments, and parens flag.

# File 'lib/sequel/sql.rb', line 731

def initialize(str, args, parens=false)
  @str = str
  @args = args.is_a?(Array) && args.length == 1 && (v = args.at(0)).is_a?(Hash) ? v : args
  @parens = parens
end

Instance Attribute Details

#args ⇒ Object (readonly)

The arguments that will be subsituted into the placeholders. Either an array of unnamed placeholders (which will be substituted in order for ? characters), or a hash of named placeholders (which will be substituted for :key phrases).

# File 'lib/sequel/sql.rb', line 722

def args
  @args
end

#parens ⇒ Object (readonly)

Whether to surround the expression with parantheses

# File 'lib/sequel/sql.rb', line 728

def parens
  @parens
end

#str ⇒ Object (readonly)

The literal string containing placeholders

# File 'lib/sequel/sql.rb', line 725

def str
  @str
end