Class: RST::Persistent::DiskStore

Inherits:
Store
  • Object
show all
Defined in:
lib/modules/persistent/disk_store.rb

Overview

#DiskStore is responsible to save an Array of objects persistently to the disk - PStore is used to effort this.

See Also:

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Store

#-, #<<, #create, #find, #first

Constructor Details

#initialize(_filename = DEFAULT_STORE_FILENAME, args = {}) ⇒ DiskStore

The first argument is the filename Following args are passed to base-class

Examples:


DiskStore.new('myfile')
DiskStore.new('myfile', other_option: '...')
DiskStore.new( nil, other_option: '...') # use default filename

Parameters:

  • _filename (String) (defaults to: DEFAULT_STORE_FILENAME)
  • args (Array) (defaults to: {}) —

    • arguments passed to the super-class

See Also:

  • DEFAULT_STORE_FILENAME


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# File 'lib/modules/persistent/disk_store.rb', line 25

def initialize(_filename=DEFAULT_STORE_FILENAME,args={})
  @filename = _filename
  super(args)
end

Instance Attribute Details

#filename ⇒ Object (readonly)

String

filename - used for PStore (no path! filename only)

See Also:

  • #store_path


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# File 'lib/modules/persistent/disk_store.rb', line 13

def filename
  @filename
end

Instance Method Details

#all ⇒ Array

TODO:

This is bad for performance and memory - refactor!

Returns:

  • (Array) 


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# File 'lib/modules/persistent/disk_store.rb', line 37

def all
  _all = []
  @store.transaction(true) do |s|
    s.roots.each do |_r|
      _all << s[_r]
    end
  end
  _all
end

#delete! ⇒ Object

Delete the store



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# File 'lib/modules/persistent/disk_store.rb', line 48

def delete!
  File.unlink(store_path)
end

#path ⇒ String

Returns full path of PStore-file.

Returns:

  • (String) —

    full path of PStore-file



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# File 'lib/modules/persistent/disk_store.rb', line 31

def path
  @store.path
end

#update(object) ⇒ Object

Find and update or add object to the store.

Parameters:

  • object (Object) 


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# File 'lib/modules/persistent/disk_store.rb', line 54

def update(object)
  @store.transaction do |s|
    s[object.id] = object
  end
end