Module: SSD::ClassMethods

Defined in:
lib/ssd/class_methods.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(base) ⇒ Object 



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# File 'lib/ssd/class_methods.rb', line 3

def self.extended(base)
  @@ssd_name      = base.new.class.to_s.downcase
  #FileUtils::mkdir_p 'DS'
  #@@ssd_path       = "DS/#{name}.pstore" 
  #@@ssd_db       = PStore.new @@ssd_path, true
  #@@ssd_db.ultra_safe  = true
  #@@ssd_db.transaction(true) {}
  #@@ssd_db
end

Instance Method Details

#[](ssd) ⇒ Object 



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# File 'lib/ssd/class_methods.rb', line 47

def [] ssd 
  setup ssd 
  @@ssd_db.transaction true do
  @@ssd_db[ssd]
  end
end

#count(ssd) ⇒ Object 



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# File 'lib/ssd/class_methods.rb', line 75

def count ssd
  setup ssd 
  $log.info("count")
  return keys(ssd).count
end

#delete(*ssds) ⇒ Object Also known as: remove

alias get ssd alias find ssd



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# File 'lib/ssd/class_methods.rb', line 65

def delete *ssds
  @@ssd_db.transaction do
  ssds.each do |ssd|
    @@ssd_db.delete ssd.to_sym
  end
  @@ssd_db.commit
  end
end

#key?(ssd) ⇒ Boolean Also known as: exists?

Returns:

  • (Boolean) 


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# File 'lib/ssd/class_methods.rb', line 38

def key? ssd 
  setup ssd
  @@ssd_db.transaction true do
  @@ssd_db.root? ssd 
  end
end

#keys(ssd) ⇒ Object 



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# File 'lib/ssd/class_methods.rb', line 31

def keys ssd
  setup ssd
  @@ssd_db.transaction true do
  @@ssd_db.roots
  end
end

#last_key(ssd) ⇒ Object 



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# File 'lib/ssd/class_methods.rb', line 23

def last_key ssd 
  setup ssd
  last_key = @@ssd_db.transaction true do
  @@ssd_db.roots
  end
  last_key.last
end

#setup(ssd) ⇒ Object 



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# File 'lib/ssd/class_methods.rb', line 13

def setup ssd 
  @@ssd = ssd
  FileUtils::mkdir_p ".ssd/#{@@ssd_name}"
  @@ssd_path    = ".ssd/#{@@ssd_name}/#{@@ssd}.ssd" 
  @@ssd_db      = PStore.new @@ssd_path, true
  @@ssd_db.ultra_safe   = true
  @@ssd_db.transaction(true) {}
  return @@ssd_db
end

#ssd(ssd, default = nil) ⇒ Object 



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# File 'lib/ssd/class_methods.rb', line 54

def ssd ssd, default = nil
  #TODO add raise if ssd.nil?
  last_key = (last_key ssd) 
  @@ssd_db.transaction true do
  @@ssd_db.fetch last_key, default
  end
end