Class: DataMapper::Adapters::FerretAdapter

Inherits:
AbstractAdapter
  • Object
show all
Defined in:
lib/ferret_adapter/adapter.rb

Defined Under Namespace

Classes: LocalIndex, RemoteIndex

Instance Method Summary collapse

Constructor Details

#initialize(name, options) ⇒ FerretAdapter

Returns a new instance of FerretAdapter.



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# File 'lib/ferret_adapter/adapter.rb', line 4

def initialize(name, options)
  super
  @index = unless File.extname(@options[:path]) == '.sock'
    LocalIndex.new(@options)
  else
    RemoteIndex.new(@options)
  end
end

Instance Method Details

#create(resources) ⇒ Object 



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# File 'lib/ferret_adapter/adapter.rb', line 13

def create(resources)
  resources.each do |resource|
    attributes = DataMapper::Ext::Hash.to_mash(resource.attributes(:field))

    # Since we don't inspect the models before generating the indices,
    # we'll map the resource's key to the :id column.
    attributes[:id]    ||= resource.key.first
    attributes[:_type]   = resource.model.name

    @index.add attributes
  end
end

#delete(collection) ⇒ Object 



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# File 'lib/ferret_adapter/adapter.rb', line 41

def delete(collection)
  @index.delete dm_query_to_ferret_query(collection.query)
  1
end

#read(query) ⇒ Object

This returns an array of Ferret docs (glorified hashes) which can be used to instantiate objects by doc and doc



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# File 'lib/ferret_adapter/adapter.rb', line 28

def read(query)
  fields = query.fields
  key    = query.model.key(name).first

  ferret_query = dm_query_to_ferret_query(query)

  @index.search(ferret_query, :limit => query.limit).map do |lazy_doc|
    Hash[ fields.map { |p| [ p, p.typecast(lazy_doc[p.field]) ] } ].update(
      key.field => key.typecast(lazy_doc[:id])
    )
  end
end

#search(ferret_query, limit = :all) ⇒ Object

This returns a hash of the resource constant and the ids returned for it from the search.

{ Story => ["1", "2"], Image => ["2"] }



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# File 'lib/ferret_adapter/adapter.rb', line 49

def search(ferret_query, limit = :all)
  results = {}
  @index.search(ferret_query, :limit => limit).each do |doc|
    resources = results[Object.const_get(doc[:_type])] ||= []
    resources << doc[:id]
  end
  results
end