Class: Arel::Nodes::Nary

Inherits:
NodeExpression show all
Defined in:
lib/arel/nodes/nary.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Math

#&, #*, #+, #-, #/, #<<, #>>, #^, #|, #~@

Methods included from OrderPredications

#asc, #desc

Methods included from AliasPredication

#as

Methods included from Predications

#between, #concat, #contains, #does_not_match, #does_not_match_all, #does_not_match_any, #does_not_match_regexp, #eq, #eq_all, #eq_any, #gt, #gt_all, #gt_any, #gteq, #gteq_all, #gteq_any, #in, #in_all, #in_any, #is_distinct_from, #is_not_distinct_from, #lt, #lt_all, #lt_any, #lteq, #lteq_all, #lteq_any, #matches, #matches_all, #matches_any, #matches_regexp, #not_between, #not_eq, #not_eq_all, #not_eq_any, #not_in, #not_in_all, #not_in_any, #overlaps, #quoted_array, #when

Methods included from Expressions

#average, #count, #extract, #maximum, #minimum, #sum

Methods inherited from Node

#and, #equality?, #invert, #not, #or, #to_sql

Methods included from FactoryMethods

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

Constructor Details

#initialize(children) ⇒ Nary

Returns a new instance of Nary.



8
9
10
11
 
# File 'lib/arel/nodes/nary.rb', line 8

def initialize(children)
  super()
  @children = children
end

Instance Attribute Details

#children ⇒ Object (readonly)

Returns the value of attribute children.



6
7
8
 
# File 'lib/arel/nodes/nary.rb', line 6

def children
  @children
end

Instance Method Details

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

Returns:

  • (Boolean) 


29
30
31
32
 
# File 'lib/arel/nodes/nary.rb', line 29

def eql?(other)
  self.class == other.class &&
    self.children == other.children
end

#fetch_attribute(&block) ⇒ Object 



21
22
23
 
# File 'lib/arel/nodes/nary.rb', line 21

def fetch_attribute(&block)
  children.any? && children.all? { |child| child.fetch_attribute(&block) }
end

#hash ⇒ Object 



25
26
27
 
# File 'lib/arel/nodes/nary.rb', line 25

def hash
  [self.class, children].hash
end

#left ⇒ Object 



13
14
15
 
# File 'lib/arel/nodes/nary.rb', line 13

def left
  children.first
end

#right ⇒ Object 



17
18
19
 
# File 'lib/arel/nodes/nary.rb', line 17

def right
  children[1]
end