Class: RubyKpi::ReplyMessage

Inherits:
Object
  • Object
show all
Defined in:
lib/ReplyMessage.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(message) ⇒ ReplyMessage

initialization



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# File 'lib/ReplyMessage.rb', line 13

def initialize(message)

  # attributes needed to parse the message
  @message = message
  @content = nil

  # message attributes
  @transaction_type = nil
  @message_type = nil

  # parse the message
  @content = XML::Parser.string(@message).parse

end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/ReplyMessage.rb', line 10

def content
  @content
end

#message ⇒ Object (readonly)

Returns the value of attribute message.



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# File 'lib/ReplyMessage.rb', line 10

def message
  @message
end

#message_type ⇒ Object (readonly)

Returns the value of attribute message_type.



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# File 'lib/ReplyMessage.rb', line 10

def message_type
  @message_type
end

#transaction_type ⇒ Object (readonly)

Returns the value of attribute transaction_type.



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# File 'lib/ReplyMessage.rb', line 10

def transaction_type
  @transaction_type
end

Instance Method Details

#get_message_type ⇒ Object

get_message_type



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# File 'lib/ReplyMessage.rb', line 29

def get_message_type()
  
  # get the message type
  @message_type = @content.find('//message_type').first.content()
  return @message_type
  
end

#get_rdf_triples ⇒ Object

get_rdf_triples



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# File 'lib/ReplyMessage.rb', line 80

def get_rdf_triples()

  mt = get_transaction_type()

  # It is a query?
  if  mt == "QUERY" or mt == "SUBSCRIBE"

    # Get the triple list
    triple_list = []
    pars = @content.root.find('./parameter')
    pars.each do |p|

      if p.attributes.get_attribute("name").value == "results"

        # new root
        nroot = p
        t = p.find('./triple_list').first.find('./triple')
        t.each do |tr|
          
          # get subject
          s = tr.find('./subject').first
          s_content = s.content.strip
          s_type = s.attributes.get_attribute("type").value.strip
          if s_type.downcase == "uri"
            subject = URI.new(s_content)
          else
            subject = Literal.new(s_content)
          end
          
          # get predicate
          p = tr.find('./predicate').first
          p_content = p.content.strip
          predicate = URI.new(p_content)
          
          # get object
          o = tr.find('./object').first
          o_content = o.content.strip
          o_type = o.attributes.get_attribute("type").value.strip
          if o_type.downcase == "uri"
            object = URI.new(o_content)
          else
            object = Literal.new(o_content)
          end
          
          # triple
          t = Triple.new(subject, predicate, object)
          triple_list << t
          
        end
      end 
    end
    
    return triple_list

  else
    
    # do nothing
    # TODO: raise an exception

  end
end

#get_rdf_triples_from_indication ⇒ Object

get_rdf_triples_from_indication



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# File 'lib/ReplyMessage.rb', line 201

def get_rdf_triples_from_indication()

  # Get NEW and OLD triple list
  added = []
  removed = []
  pars = @content.root.find('./parameter')
  pars.each do |p|
    
    # Extract added triples
    if p.attributes.get_attribute("name").value == "new_results"
      
      # new root
      nroot = p
      t = p.find('./triple_list').first.find('./triple')
      t.each do |tr|

        # get subject
        s = tr.find('./subject').first
        s_content = s.content.strip
        s_type = s.attributes.get_attribute("type").value.strip               
        if s_type.downcase == "uri"
          subject = URI.new(s_content)
        else
          subject = Literal.new(s_content)
        end

        # get predicate
        p = tr.find('./predicate').first
        p_content = p.content.strip
        predicate = URI.new(p_content)
        
        # get object
        o = tr.find('./object').first
        o_content = o.content.strip
        o_type = o.attributes.get_attribute("type").value.strip
        if o_type.downcase == "uri"
          object = URI.new(o_content)
        else
          object = Literal.new(o_content)
        end
        
        # build the triple
        added_triple = Triple.new(subject, predicate, object)
        added << added_triple

      end
      
      # Extract removed triples
    elsif p.attributes.get_attribute("name").value == "obsolete_results"

      # new root
      nroot = p
      t = p.find('./triple_list').first.find('./triple')
      t.each do |tr|
        
        # get subject
        s = tr.find('./subject').first
        s_content = s.content.strip
        s_type = s.attributes.get_attribute("type").value.strip               
        if s_type.downcase == "uri"
          subject = URI.new(s_content)
        else
          subject = Literal.new(s_content)
        end
        
        # get predicate
        p = tr.find('./predicate').first
        p_content = p.content.strip
        predicate = URI.new(p_content)
        
        # get object
        o = tr.find('./object').first
        o_content = o.content.strip
        o_type = o.attributes.get_attribute("type").value.strip
        if o_type.downcase == "uri"
          object = URI.new(o_content)
        else
          object = Literal.new(o_content)
        end
        
        # build the triple
        removed_triple = Triple.new(subject, predicate, object)
        removed << removed_triple
        
      end        
    end     
  end       
  
  # return added and removed triples
  return added, removed

end

#get_sparql_results ⇒ Object

get_sparql_results



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# File 'lib/ReplyMessage.rb', line 143

def get_sparql_results()

  mt = get_transaction_type()
  if mt == "QUERY" or mt == "SUBSCRIBE"

    # declare an empty list
    results = []

    # Get the triple list
    pars = @content.root.find('./parameter')
    pars.each do |p|
      if p.attributes.get_attribute("name").value == "results"

        # we're on the sparql node
        p.each_element do |sparql|
          
          sparql.each_element do |hr|
            
            # head/results fields
            hr.each_element do |field|
              
              # find the results
              if field.name == "result"
                
                # We found a result
                result = []
                
                field.each_element do |n|
                  variable = []
                  variable << n.attributes.first.value
                  n.each_element do |v|
                    variable << v.name
                    variable << v.content
                  end
                  result << variable
                  results << result
                end

              end
            end        
          end
          break
        end
      end
    end
    
    # return
    return results

  else
    
    # do nothing

  end

end

#get_sparql_results_from_indication ⇒ Object

get_sparql_results_from_indication



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# File 'lib/ReplyMessage.rb', line 295

def get_sparql_results_from_indication()

  puts "method started"

  # declare an empty list
  added = []
  removed = []

  # Get the triple list
  pars = @content.root.find('./parameter')
  pars.each do |p|
    
    puts p.attributes.get_attribute("name").value

    if p.attributes.get_attribute("name").value == "new_results"
      
      # we're on the sparql node
      p.each_element do |sparql|
        
        sparql.each_element do |hr|
          
          # head/results fields
          hr.each_element do |field|
            
            # find the results
            if field.name == "result"
              
              # We found a result
              result = []
              
              field.each_element do |n|
                variable = []
                variable << n.attributes.first.value
                n.each_element do |v|
                  variable << v.name
                  variable << v.content
                end
                result << variable
                added << result
              end
              
            end
          end        
        end
        break
      end
      
    elsif p.attributes.get_attribute("name").value == "obsolete_results"

      # we're on the sparql node
      p.each_element do |sparql|
        
        sparql.each_element do |hr|
          
          # head/results fields
          hr.each_element do |field|
            
            # find the results
            if field.name == "result"
              
              # We found a result
              result = []
              
              field.each_element do |n|
                variable = []
                variable << n.attributes.first.value
                n.each_element do |v|
                  variable << v.name
                  variable << v.content
                end
                result << variable
                removed << result
              end
              
            end
          end        
        end
        break
      end
      
    end
  end

  return added, removed

end

#get_subscription_id ⇒ Object

get_subscription_id



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# File 'lib/ReplyMessage.rb', line 47

def get_subscription_id()

  # parse the parameters section
  subscription_id = nil
  pars = @content.root.find('./parameter')
  pars.each do |p|
    if p.attributes.get_attribute("name").value == "subscription_id"
      subscription_id = p.content
      break
    end 
  end
  
  # return the subscription_id
  return  subscription_id

end

#get_transaction_type ⇒ Object

get_transaction_type



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# File 'lib/ReplyMessage.rb', line 38

def get_transaction_type()
  
  # get the transaction type
  @transaction_type = @content.find('//transaction_type').first.content()
  return @transaction_type

end

#success? ⇒ Boolean

get_status

Returns:

  • (Boolean) 


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# File 'lib/ReplyMessage.rb', line 65

def success?()

  # find the new root
  pars = @content.root.find('./parameter')
  pars.each do |p|
    
    # get and return the status
    if p.attributes.get_attribute("name").value == "status"
      return p.content == "m3:Success" ? true : false
      break
    end 
  end
end