Contents

# require 'active_rdf'

# Translates abstract query into jars2 query.
# (ignores ASK queries)
class Query2Jars2
  def self.translate(query)
    str = ""
    if query.select?
      # concatenate each where clause using space: s p o
      # and then concatenate the clauses using dot: s p o . s2 p2 o2 .
      str << "#{query.where_clauses.collect{|w| w.collect{|w| '?'+w.to_s}.join(' ')}.join(" .\n")} ."
      # TODO: should we maybe reverse the order on the where_clauses? it depends 
      # on Andreas' answer of the best order to give to jars2. Users would 
      # probably put the most specific stuff first, and join to get the 
      # interesting information. Maybe we should not touch it and let the user 
      # figure it out.
    end

    ActiveRdfLogger::log_debug(self) { "Query2Jars2: translated #{query} to #{str}" }
    return str
  end
end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
activerdf_net7-1.6.16	lib/active_rdf/queryengine/query2jars2.rb
activerdf_net7-1.6.15	lib/active_rdf/queryengine/query2jars2.rb
activerdf_net7-1.6.14	lib/active_rdf/queryengine/query2jars2.rb
activerdf_net7-1.6.13	lib/active_rdf/queryengine/query2jars2.rb
activerdf_net7-1.6.12	lib/active_rdf/queryengine/query2jars2.rb
activerdf_net7-1.6.11	lib/active_rdf/queryengine/query2jars2.rb