Class: Triannon::AnnotationLdp

Inherits:
Object
  • Object
show all
Defined in:
app/models/triannon/annotation_ldp.rb

Overview

an LDP aware model of an Annotation – basically, a shim between the OA notion of an annotation 

and the LDP storage.

Instance Method Summary collapse

Instance Method Details

#base_uri ⇒ Object 



16
17
18
19
 
# File 'app/models/triannon/annotation_ldp.rb', line 16

def base_uri
  res = graph.query Triannon::Graph.anno_query
  res.first.s
end

#body_uris ⇒ Array<String>

Returns the uris of each LDP body resource.

Returns:

  • (Array<String>) —

    the uris of each LDP body resource



22
23
24
25
26
27
28
29
30
31
 
# File 'app/models/triannon/annotation_ldp.rb', line 22

def body_uris
  q = Triannon::Graph.anno_query.dup
  q << [:s, RDF::OpenAnnotation.hasBody, :body_uri]
  solns = graph.query q
  result = []
  solns.distinct.each { |soln| 
    result << soln.body_uri 
  }
  result
end

#graph ⇒ Object

RDF::Graph object with all triples, including back end (e.g. LDP, Fedora)



7
8
9
 
# File 'app/models/triannon/annotation_ldp.rb', line 7

def graph
  @g ||= RDF::Graph.new
end

#load_statements_into_graph(statements) ⇒ Object

add the passed statements to #graph

Parameters:

  • statements (Array<RDF::Statement>) —

    an array of RDF statements to be loaded into the graph



47
48
49
 
# File 'app/models/triannon/annotation_ldp.rb', line 47

def load_statements_into_graph statements
  graph.insert(statements) if statements && statements.size > 0
end

#stripped_graph ⇒ Object

RDF::Graph without any back end (e.g. LDP, Fedora) triples



12
13
14
 
# File 'app/models/triannon/annotation_ldp.rb', line 12

def stripped_graph
  RDF::LDP.remove_ldp_triples (RDF::FCRepo4.remove_fedora_triples(graph))
end

#target_uris ⇒ Array<String>

Returns the uris of each LDP target resource.

Returns:

  • (Array<String>) —

    the uris of each LDP target resource



34
35
36
37
38
39
40
41
42
43
 
# File 'app/models/triannon/annotation_ldp.rb', line 34

def target_uris
  q = Triannon::Graph.anno_query.dup
  q << [:s, RDF::OpenAnnotation.hasTarget, :target_uri]
  solns = graph.query q
  result = []
  solns.distinct.each { |soln| 
    result << soln.target_uri 
  }
  result
end