Class: SqlTools::PredicateFilter

Inherits:
Object
  • Object
show all
Defined in:
lib/sql_tools/predicate_filter.rb

Instance Method Summary collapse

Constructor Details

#initialize(query) ⇒ PredicateFilter

Returns a new instance of PredicateFilter.



3
4
5
 
# File 'lib/sql_tools/predicate_filter.rb', line 3

def initialize(query)
  @query = query
end

Instance Method Details

#filter(object) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
18
19
 
# File 'lib/sql_tools/predicate_filter.rb', line 7

def filter(object)
  @stack = []
  filter_recursive(object, @query.predicate)

  right = @stack.pop

  while left = @stack.pop
    predicate = Predicate::Binary.new(left, "AND", right)
    right = predicate
  end

  right
end