Class: Gel::DB::File

Inherits:
Gel::DB show all
Includes:
AutoTransaction
Defined in:
lib/gel/db.rb

Instance Method Summary collapse

Methods included from AutoTransaction

#nested?, #owned?, #read?, #write?

Methods inherited from Gel::DB

new

Constructor Details

#initialize(root, name) ⇒ File

Returns a new instance of File.



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# File 'lib/gel/db.rb', line 256

def initialize(root, name)
  @path = Pathname.new("#{root}/#{name}")
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/gel/db.rb', line 279

def [](key)
  child = @path.join(key)
  if child.exist?
    Marshal.load(child.binread)
  end
end

#[]=(key, value) ⇒ Object 



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# File 'lib/gel/db.rb', line 286

def []=(key, value)
  child = @path.join(key)
  if value
    child.binwrite Marshal.dump(value)
  elsif child.exist?
    child.unlink
  end
end

#each_key ⇒ Object 



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# File 'lib/gel/db.rb', line 269

def each_key
  @path.each_child(false) do |child|
    yield child.to_s
  end
end

#key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gel/db.rb', line 275

def key?(key)
  @path.join(key).exist?
end

#reading ⇒ Object 



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# File 'lib/gel/db.rb', line 265

def reading
  yield
end

#writing ⇒ Object 



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# File 'lib/gel/db.rb', line 260

def writing
  @path.mkdir unless @path.exist?
  yield
end