Class: Solis::Store::Sparql::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/solis/store/sparql/client.rb,
lib/solis/store/sparql/client/query.rb

Defined Under Namespace

Classes: Query

Instance Method Summary collapse

Constructor Details

#initialize(endpoint, options = {}) ⇒ Client

Returns a new instance of Client.



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# File 'lib/solis/store/sparql/client.rb', line 10

def initialize(endpoint, options = {})
  @endpoint = endpoint
  @graph_name = options[:graph_name] || ''
  @read_timeout = options[:read_timeout] || 120
  @logger = options[:logger] || Solis::LOGGER

    @pool = ConnectionPool.new(size:5, timeout: 160) do
      Solis::LOGGER.level = Logger::DEBUG if ConfigFile[:debug]

      if @graph_name
        client = SPARQL::Client.new(@endpoint, graph: @graph_name, read_timeout: @read_timeout, logger: @logger)
      else
        client = SPARQL::Client.new(@endpoint, read_timeout: @read_timeout, logger: @logger)
      end

      client
  end
end

Instance Method Details

#query(query, options = {}) ⇒ Object

Raises:



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# File 'lib/solis/store/sparql/client.rb', line 39

def query(query, options = {})
  raise Solis::Error::NotFoundError, "Server or graph(#{@graph_name} not found" unless up?
  result = nil
  @pool.with do |c|
    result = Query.new(c).run(query, options)
  end
  result
end

#up? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/solis/store/sparql/client.rb', line 29

def up?
  result = nil
  @pool.with do |c|
    result = c.query("ASK WHERE { ?s ?p ?o }")
  end
  result
rescue HTTP::Error => e
  return false
end