Class: Pione::System::FileCache::SimpleCacheMethod

Inherits:
FileCacheMethod show all
Defined in:
lib/pione/system/file-cache.rb

Overview

SimpleCacheMethod is a simple cache method implementation.

Instance Method Summary collapse

Methods inherited from FileCacheMethod

name, set_name

Constructor Details

#initialize ⇒ SimpleCacheMethod

Creates a method.



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# File 'lib/pione/system/file-cache.rb', line 172

def initialize
  @table = {}
  @tmpdir = Global.file_cache_directory
end

Instance Method Details

#cached?(location) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pione/system/file-cache.rb', line 213

def cached?(location)
  @table.has_key?(location)
end

#clear ⇒ Object 



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# File 'lib/pione/system/file-cache.rb', line 217

def clear
  @table.clear
end

#get(location) ⇒ Object 



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# File 'lib/pione/system/file-cache.rb', line 177

def get(location)
  # cache if record doesn't exist
  unless @table.has_key?(location)
    if not(location.local?)
      # create a cache and copy the location data to it
      cache_location = Location[Global.file_cache_path_generator.create]
      location.copy(cache_location)
      @table[location] = cache_location
    else
      # refer directly if the location is in local
      @table[location] = location
    end
  end
  unless @table[location].exist?
    location.turn(@table[location])
  end
  return @table[location]
end

#put(src, dest) ⇒ Object 



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# File 'lib/pione/system/file-cache.rb', line 196

def put(src, dest)
  cache_location = @table[dest]

  # update cache if
  if cache_location.nil? or src.mtime > cache_location.mtime
    cache_location = Location[Global.file_cache_path_generator.create]
    src.copy(cache_location)
    @table[dest] = cache_location
  end
end

#sync(old_location, new_location) ⇒ Object 



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# File 'lib/pione/system/file-cache.rb', line 207

def sync(old_location, new_location)
  if cached?(old_location)
    @table[new_location] = @table[old_location]
  end
end