Class: Waves::Caches::File

Inherits:
Simple show all
Defined in:
lib/caches/file.rb

Instance Method Summary collapse

Methods inherited from Simple

#[], #[]=, #exists?

Constructor Details

#initialize(args) ⇒ File

Returns a new instance of File.

Raises:

  • (ArgumentError) 


8
9
10
11
 
# File 'lib/caches/file.rb', line 8

def initialize( args )
  raise ArgumentError, ":directory is nil" if args[ :directory ].nil?
  @directory = args[ :directory ] ; @keys = []
end

Instance Method Details

#clear ⇒ Object 



25
26
27
 
# File 'lib/caches/file.rb', line 25

def clear
  @keys.each { |key| delete( key ) }
end

#delete(key) ⇒ Object 



18
19
20
21
22
23
 
# File 'lib/caches/file.rb', line 18

def delete( key )
  if @keys.include? key
    ::File.delete( @directory / key )
    @keys.delete( key )
  end
end

#fetch(key) ⇒ Object 



29
30
31
32
33
 
# File 'lib/caches/file.rb', line 29

def fetch( key )
  Marshal.load( ::File.read( @directory / key ) ) if @keys.include?( key )
rescue ArgumentError
  nil
end

#store(key, value) ⇒ Object 



13
14
15
16
 
# File 'lib/caches/file.rb', line 13

def store( key, value )            
  @keys << key
  ::File.open( @directory / key, 'w') { |f| Marshal.dump( value, f ) }
end