Class: Juno::Adapters::DataMapper

Inherits:
Base
  • Object
show all
Defined in:
lib/juno/adapters/datamapper.rb

Overview

Datamapper backend

Defined Under Namespace

Classes: Store

Instance Method Summary collapse

Methods inherited from Base

#[], #[]=, #close, #fetch

Constructor Details

#initialize(options = {}) ⇒ DataMapper

Constructor

Options:

  • :setup - Datamapper setup string

  • :repository - Repository name (default :juno)

  • :table - Table name (default :juno)

Parameters:

  • options (Hash) (defaults to: {})

Raises:

  • (ArgumentError) 


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# File 'lib/juno/adapters/datamapper.rb', line 23

def initialize(options = {})
  raise ArgumentError, 'Option :setup is required' unless options[:setup]
  @repository = options.delete(:repository) || :juno
  Store.storage_names[@repository] = (options.delete(:table) || :juno).to_s
  ::DataMapper.setup(@repository, options[:setup])
  context { Store.auto_upgrade! }
end

Instance Method Details

#clear(options = {}) ⇒ Object 



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# File 'lib/juno/adapters/datamapper.rb', line 64

def clear(options = {})
  context { Store.all.destroy! }
  self
end

#delete(key, options = {}) ⇒ Object 



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# File 'lib/juno/adapters/datamapper.rb', line 54

def delete(key, options = {})
  context do
    if record = Store.get(key)
      value = record.v
      record.destroy!
      value
    end
  end
end

#key?(key, options = {}) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/juno/adapters/datamapper.rb', line 31

def key?(key, options = {})
  context { !!Store.get(key) }
end

#load(key, options = {}) ⇒ Object 



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# File 'lib/juno/adapters/datamapper.rb', line 35

def load(key, options = {})
  context do
    record = Store.get(key)
    record ? record.v : nil
  end
end

#store(key, value, options = {}) ⇒ Object 



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# File 'lib/juno/adapters/datamapper.rb', line 42

def store(key, value, options = {})
  context do
    record = Store.get(key)
    if record
      record.update(:k => key, :v => value)
    else
      Store.create(:k => key, :v => value)
    end
    value
  end
end