1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
module Arel
module Attributes
class Attribute < Struct.new :relation, :name, :column
include Arel::Expressions
def not_eq other
Nodes::NotEqual.new self, other
end
def eq other
Nodes::Equality.new self, other
end
def eq_any others
first = Nodes::Equality.new self, others.shift
Nodes::Grouping.new others.inject(first) { |memo,expr|
Nodes::Or.new(memo, Nodes::Equality.new(self, expr))
}
end
def in other
case other
when Arel::SelectManager
Nodes::In.new self, other.to_a.map { |x| x.id }
when Range
if other.exclude_end?
left = Nodes::GreaterThanOrEqual.new(self, other.min)
right = Nodes::LessThan.new(self, other.max + 1)
Nodes::And.new left, right
else
Nodes::Between.new(self, Nodes::And.new(other.min, other.max))
end
else
Nodes::In.new self, other
end
end
def gteq right
Nodes::GreaterThanOrEqual.new self, right
end
def gt right
Nodes::GreaterThan.new self, right
end
end
class String < Attribute; end
class Time < Attribute; end
class Boolean < Attribute; end
class Decimal < Attribute; end
class Float < Attribute; end
class Integer < Attribute; end
end
Attribute = Attributes::Attribute
end
|
