Class: Arel::Nodes::Unary

Inherits:

Node

• Object
• Node
• Arel::Nodes::Unary

Defined in:

lib/arel/nodes/unary.rb

Direct Known Subclasses

Else, Extract, Following, Grouping, Preceding, Quoted, Range, Rows, UnaryOperation, UnqualifiedColumn, With

Instance Attribute Summary

• #expr ⇒ Object (also: #value)

  Returns the value of attribute expr.

Instance Method Summary

• #eql?(other) ⇒ Boolean (also: #==)
• #hash ⇒ Object
• #initialize(expr) ⇒ Unary constructor

  A new instance of Unary.

Methods inherited from Node

#_caller, #and, #each, #not, #or, #to_sql

Methods included from FactoryMethods

#create_and, #create_false, #create_join, #create_on, #create_string_join, #create_table_alias, #create_true, #grouping, #lower

Constructor Details

#initialize(expr) ⇒ Unary

Returns a new instance of Unary.

# File 'lib/arel/nodes/unary.rb', line 8

def initialize expr
  super()
  @expr = expr
end

Instance Attribute Details

#expr ⇒ Object Also known as: value

Returns the value of attribute expr.

# File 'lib/arel/nodes/unary.rb', line 5

def expr
  @expr
end

Instance Method Details

#eql?(other) ⇒ Boolean Also known as: ==

Returns:

• (Boolean)

# File 'lib/arel/nodes/unary.rb', line 17

def eql? other
  self.class == other.class &&
    self.expr == other.expr
end

#hash ⇒ Object

# File 'lib/arel/nodes/unary.rb', line 13

def hash
  @expr.hash
end