Class: Triple

Inherits:

Object

• Object
• Triple

Defined in:

lib/rena/triple.rb

Instance Attribute Summary

• #object ⇒ Object

  Returns the value of attribute object.

• #predicate ⇒ Object

  Returns the value of attribute predicate.

• #subject ⇒ Object

  Returns the value of attribute subject.

Instance Method Summary

• #initialize(subject, predicate, object) ⇒ Triple constructor

  Creates a new triple directly from the intended subject, predicate, and object.

• #to_ntriples ⇒ Object

Constructor Details

#initialize(subject, predicate, object) ⇒ Triple

Creates a new triple directly from the intended subject, predicate, and object.

Example

Triple.new(BNode.new, URIRef.new("http://xmlns.com/foaf/0.1/knows"), BNode.new) # => results in the creation of a new triple and returns it

Returns

Parameters:

• s (URIRef, BNode) —

  the subject of the triple

• p (URIRef) —

  the predicate of the triple

• o (URIRef, BNode, Literal, TypedLiteral) —

  the object of the triple

Raises:

• (Error) —

  Checks parameter types and raises if they are incorrect.

Author:

• Tom Morris

# File 'lib/rena/triple.rb', line 20

def initialize (subject, predicate, object)
  self.check_subject(subject)
  self.check_predicate(predicate)
  self.check_object(object)
end

Instance Attribute Details

#object ⇒ Object

Returns the value of attribute object.

# File 'lib/rena/triple.rb', line 2

def object
  @object
end

#predicate ⇒ Object

Returns the value of attribute predicate.

# File 'lib/rena/triple.rb', line 2

def predicate
  @predicate
end

#subject ⇒ Object

Returns the value of attribute subject.

# File 'lib/rena/triple.rb', line 2

def subject
  @subject
end

Instance Method Details

#to_ntriples ⇒ Object

# File 'lib/rena/triple.rb', line 26

def to_ntriples
  @subject.to_ntriples + " " + @predicate.to_ntriples + " " + @object.to_ntriples + " ."
end