Class: Arel::Nodes::SelectStatement

Inherits:
NodeExpression show all
Defined in:
lib/arel/nodes/select_statement.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?, #fetch_attribute, #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(relation = nil) ⇒ SelectStatement

Returns a new instance of SelectStatement.



9
10
11
12
13
14
15
16
17
 
# File 'lib/arel/nodes/select_statement.rb', line 9

def initialize(relation = nil)
  super()
  @cores          = [SelectCore.new(relation)]
  @orders         = []
  @limit          = nil
  @lock           = nil
  @offset         = nil
  @with           = nil
end

Instance Attribute Details

#cores ⇒ Object (readonly)

Returns the value of attribute cores.



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

def cores
  @cores
end

#limit ⇒ Object

Returns the value of attribute limit.



7
8
9
 
# File 'lib/arel/nodes/select_statement.rb', line 7

def limit
  @limit
end

#lock ⇒ Object

Returns the value of attribute lock.



7
8
9
 
# File 'lib/arel/nodes/select_statement.rb', line 7

def lock
  @lock
end

#offset ⇒ Object

Returns the value of attribute offset.



7
8
9
 
# File 'lib/arel/nodes/select_statement.rb', line 7

def offset
  @offset
end

#orders ⇒ Object

Returns the value of attribute orders.



7
8
9
 
# File 'lib/arel/nodes/select_statement.rb', line 7

def orders
  @orders
end

#with ⇒ Object

Returns the value of attribute with.



7
8
9
 
# File 'lib/arel/nodes/select_statement.rb', line 7

def with
  @with
end

Instance Method Details

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

Returns:

  • (Boolean) 


29
30
31
32
33
34
35
36
37
 
# File 'lib/arel/nodes/select_statement.rb', line 29

def eql?(other)
  self.class == other.class &&
    self.cores == other.cores &&
    self.orders == other.orders &&
    self.limit == other.limit &&
    self.lock == other.lock &&
    self.offset == other.offset &&
    self.with == other.with
end

#hash ⇒ Object 



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

def hash
  [@cores, @orders, @limit, @lock, @offset, @with].hash
end

#initialize_copy(other) ⇒ Object 



19
20
21
22
23
 
# File 'lib/arel/nodes/select_statement.rb', line 19

def initialize_copy(other)
  super
  @cores  = @cores.map { |x| x.clone }
  @orders = @orders.map { |x| x.clone }
end