Class: JSON::LD::Context::TermDefinition

Inherits:
Object
  • Object
show all
Defined in:
lib/json/ld/context.rb

Overview

Term Definitions specify how properties and values have to be interpreted as well as the current vocabulary mapping and the default language

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(term, id = nil) ⇒ TermDefinition

Create a new Term Mapping with an ID



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# File 'lib/json/ld/context.rb', line 40

def initialize(term, id = nil)
  @term = term
  @id = id.to_s if id
end

Instance Attribute Details

#container_mapping ⇒ String 



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# File 'lib/json/ld/context.rb', line 20

def container_mapping
  @container_mapping
end

#id ⇒ RDF::URI 



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# File 'lib/json/ld/context.rb', line 11

def id
  @id
end

#language_mapping ⇒ String

Language mapping of term, ‘false` is used if there is explicitly no language mapping for this term.



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# File 'lib/json/ld/context.rb', line 24

def language_mapping
  @language_mapping
end

#reverse_property ⇒ Boolean 



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# File 'lib/json/ld/context.rb', line 27

def reverse_property
  @reverse_property
end

#simple ⇒ Boolean

This is a simple term definition, not an expanded term definition



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# File 'lib/json/ld/context.rb', line 31

def simple
  @simple
end

#term ⇒ String 



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# File 'lib/json/ld/context.rb', line 14

def term
  @term
end

#type_mapping ⇒ String 



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# File 'lib/json/ld/context.rb', line 17

def type_mapping
  @type_mapping
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/json/ld/context.rb', line 83

def inspect
  v = %w([TD)
  v << "id=#{@id}"
  v << "term=#{@term}"
  v << "rev" if reverse_property
  v << "container=#{container_mapping}" if container_mapping
  v << "lang=#{language_mapping.inspect}" unless language_mapping.nil?
  v << "type=#{type_mapping}" unless type_mapping.nil?
  v.join(" ") + "]"
end

#simple? ⇒ Boolean

This is a simple term definition, not an expanded term definition



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# File 'lib/json/ld/context.rb', line 35

def simple?; simple; end

#to_context_definition(context) ⇒ String, Hash{String => Array[String], String}

Output Hash or String definition for this definition considering @language and @vocab



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# File 'lib/json/ld/context.rb', line 50

def to_context_definition(context)
  cid = if context.vocab && id.start_with?(context.vocab)
    # Nothing to return unless it's the same as the vocab
    id == context.vocab ? context.vocab : id.to_s[context.vocab.length..-1]
  else
    # Find a term to act as a prefix
    iri, prefix = context.iri_to_term.detect {|i,p| id.to_s.start_with?(i.to_s)}
    iri && iri != id ? "#{prefix}:#{id.to_s[iri.length..-1]}" : id
  end

  if language_mapping.nil? &&
     container_mapping.nil? &&
     type_mapping.nil? &&
     reverse_property.nil?

     cid.to_s unless cid == term && context.vocab
  else
    defn = {}
    defn[reverse_property ? '@reverse' : '@id'] = cid.to_s unless cid == term && !reverse_property
    if type_mapping
      defn['@type'] = if KEYWORDS.include?(type_mapping)
        type_mapping
      else
        context.compact_iri(type_mapping, vocab: true)
      end
    end
    defn['@container'] = container_mapping if container_mapping
    # Language set as false to be output as null
    defn['@language'] = (language_mapping ? language_mapping : nil) unless language_mapping.nil?
    defn
  end
end