Class: DataMapper::Query::Sort

Inherits:
Object
  • Object
show all
Defined in:
lib/dm-core/query/sort.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#value ⇒ Object (readonly)

API:

  • semipublic



7
8
9
 
# File 'lib/dm-core/query/sort.rb', line 7

def value
  @value
end

Instance Method Details

#<=>(other) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
# File 'lib/dm-core/query/sort.rb', line 15

def <=>(other)
  other_value = other.value
  value_nil   = @value.nil?
  other_nil   = other_value.nil?

  cmp = case
    when value_nil then other_nil ? 0 : 1
    when other_nil then -1
    else
      @value <=> other_value
  end

  @ascending ? cmp : cmp * -1
end

#direction ⇒ Object

API:

  • semipublic



10
11
12
 
# File 'lib/dm-core/query/sort.rb', line 10

def direction
  @ascending ? :ascending : :descending
end