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, graph_name) ⇒ Client

Returns a new instance of Client.



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

def initialize(endpoint, graph_name)
  @endpoint = endpoint
  @graph_name = graph_name

  @pool = ConnectionPool.new(size:5, timeout: 60) do
    SPARQL::Client.new(@endpoint, graph: @graph_name)
    #SPARQL::Client.new(@endpoint)
  end
end

Instance Method Details

#query(query) ⇒ Object

Raises:



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# File 'lib/solis/store/sparql/client.rb', line 30

def query(query)
  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)
  end
  result
end

#up? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/solis/store/sparql/client.rb', line 20

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