Class: DataMapper::Adapters::Tokyo::CabinetAdapter

Inherits:
AbstractAdapter
  • Object
show all
Defined in:
lib/dm-tokyo-adapter/cabinet.rb

Overview

A DataMapper Tokyo Cabinet table store adapter.

tokyocabinet.sourceforge.net/spex-en.html#features_tctdb

The Tokyo Cabinet table storage engine doesn’t require a predefined schema and as such properties in your resource are only used by the adapter for typecasting. There is no need to migrate your resource when you create, update or delete properties.

See

DataMapper::Adapters::Tokyo::Query

Table Query.

Direct Known Subclasses

TyrantAdapter

Instance Method Summary collapse

Instance Method Details

#create(resources) ⇒ Object 



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# File 'lib/dm-tokyo-adapter/cabinet.rb', line 17

def create(resources)
  resources.map do |resource|
    model          = resource.model

    with_connection(resource.model) do |connection|
      initialize_serial(resource, connection.generate_unique_id)
      connection[key(resource)] = attributes(resource, :field)
    end
  end.size
end

#delete(collection) ⇒ Object 



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# File 'lib/dm-tokyo-adapter/cabinet.rb', line 42

def delete(collection)
  with_connection(collection.query.model) do |connection|
    collection.each do |record|
      connection.delete(key(record))
    end.size
  end
end

#read(query) ⇒ Object 



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# File 'lib/dm-tokyo-adapter/cabinet.rb', line 28

def read(query)
  with_connection(query.model) do |connection|
    Tokyo::Query.new(connection, query).read
  end
end

#update(attributes, collection) ⇒ Object 



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# File 'lib/dm-tokyo-adapter/cabinet.rb', line 34

def update(attributes, collection)
  with_connection(collection.query.model) do |connection|
    collection.each do |record|
      connection[key(record)] = attributes(record, :field)
    end.size
  end
end