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Name	Size	Permission
memcached	[ DIR ]	drwxr-xr-x
mongo	[ DIR ]	drwxr-xr-x
activerecord.rb	4.47 KB	-rw-r--r--
cassandra.rb	3.37 KB	-rw-r--r--
client.rb	2.05 KB	-rw-r--r--
cookie.rb	967 B	-rw-r--r--
couch.rb	3.85 KB	-rw-r--r--
datamapper.rb	2.34 KB	-rw-r--r--
daybreak.rb	1.17 KB	-rw-r--r--
dbm.rb	615 B	-rw-r--r--
file.rb	3.18 KB	-rw-r--r--
fog.rb	1.54 KB	-rw-r--r--
gdbm.rb	606 B	-rw-r--r--
hbase.rb	3.06 KB	-rw-r--r--
leveldb.rb	929 B	-rw-r--r--
lmdb.rb	2.17 KB	-rw-r--r--
localmemcache.rb	766 B	-rw-r--r--
lruhash.rb	2.69 KB	-rw-r--r--
memcached.rb	385 B	-rw-r--r--
memory.rb	450 B	-rw-r--r--
mongo.rb	225 B	-rw-r--r--
null.rb	668 B	-rw-r--r--
pstore.rb	1.97 KB	-rw-r--r--
redis.rb	2.35 KB	-rw-r--r--
restclient.rb	1.31 KB	-rw-r--r--
riak.rb	1.69 KB	-rw-r--r--
sdbm.rb	606 B	-rw-r--r--
sequel.rb	3.74 KB	-rw-r--r--
sqlite.rb	2.68 KB	-rw-r--r--
tdb.rb	609 B	-rw-r--r--
tokyocabinet.rb	1.38 KB	-rw-r--r--
tokyotyrant.rb	3.24 KB	-rw-r--r--
yaml.rb	238 B	-rw-r--r--

Code Editor : datamapper.rb

require 'dm-core'
require 'dm-migrations'

module Moneta
  module Adapters
    # Datamapper backend
    # @api public
    class DataMapper
      include Defaults

supports :create

class Store
        include ::DataMapper::Resource
        property :k, String, key: true, length: 255
        property :v, Text, lazy: false
        self.raise_on_save_failure = true
      end

# @param [Hash] options
      # @option options [String] :setup Datamapper setup string
      # @option options [String/Symbol] :repository (:moneta) Repository name
      # @option options [String/Symbol] :table (:moneta) Table name
      def initialize(options = {})
        raise ArgumentError, 'Option :setup is required' unless options[:setup]
        @repository = (options.delete(:repository) || :moneta).to_sym
        Store.storage_names[@repository] = (options.delete(:table) || :moneta).to_s
        ::DataMapper.setup(@repository, options[:setup])
        context { Store.auto_upgrade! }
      end

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

# (see Proxy#load)
      def load(key, options = {})
        context do
          record = Store.get(key)
          record && record.v
        end
      end

# (see Proxy#store)
      def store(key, value, options = {})
        context do
          if record = Store.get(key)
            record.update(k: key, v: value)
          else
            Store.create(k: key, v: value)
          end
          value
        end
      rescue
        tries ||= 0
        (tries += 1) < 10 ? retry : raise
      end

# (see Proxy#create)
      def create(key, value, options = {})
        context do
          Store.create(k: key, v: value)
          true
        end
      rescue
        # FIXME: This catches too many errors
        # it should only catch a not-unique-exception
        false
      end

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

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

private

def context
        ::DataMapper.repository(@repository) { yield }
      end
    end
  end
end

${this.title}

Code Editor : datamapper.rb