Module: ActiveFedora::RDFDatastream::ModelMethods::ClassMethods
- Defined in:
- lib/active_fedora/rdf_datastream.rb
Instance Attribute Summary collapse
Instance Method Summary
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Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(name, *args, &block) ⇒ Object
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# File 'lib/active_fedora/rdf_datastream.rb', line 64
def method_missing(name, *args, &block)
args = args.first if args.respond_to? :first
raise "mapping must specify RDF vocabulary as :in argument" unless args.has_key? :in
vocab = args[:in]
predicate = args.fetch(:to, name)
raise "Vocabulary '#{vocab.inspect}' does not define property '#{predicate.inspect}'" unless vocab.respond_to? predicate
indexing = false
if block_given?
indexing = true
iobj = IndexObject.new
yield iobj
data_type = iobj.data_type
behaviors = iobj.behaviors
end
vocab = vocab.to_s
name = self.prefix(name)
if config
if config[:predicate_mapping].has_key? vocab
config[:predicate_mapping][vocab][name] = predicate
else
config[:predicate_mapping][vocab] = { name => predicate }
end
config[:predicate_mapping][vocab]["#{name}type".to_sym] = data_type if indexing
config[:predicate_mapping][vocab]["#{name}behaviors".to_sym] = behaviors if indexing
else
config = {
:default_namespace => vocab,
:predicate_mapping => {
vocab => { name => predicate }
}
}
config[:predicate_mapping][vocab]["#{name}type".to_sym] = data_type if indexing
config[:predicate_mapping][vocab]["#{name}behaviors".to_sym] = behaviors if indexing
end
end
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Instance Attribute Details
#vocabularies ⇒ Object
Returns the value of attribute vocabularies.
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# File 'lib/active_fedora/rdf_datastream.rb', line 26
def vocabularies
@vocabularies
end
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Instance Method Details
#map_predicates {|_self| ... } ⇒ Object
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# File 'lib/active_fedora/rdf_datastream.rb', line 61
def map_predicates(&block)
yield self
end
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#prefix(name) ⇒ Object
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# File 'lib/active_fedora/rdf_datastream.rb', line 30
def prefix(name)
name = name.to_s unless name.is_a? String
pre = self.to_s.sub(/RDFDatastream$/i, '').underscore
return "#{pre}__#{name}".to_sym
end
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#rdf_subject {|ds| ... } ⇒ Object
Register a ruby block that evaluates to the subject of the graph By default, the block returns the current object’s pid
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# File 'lib/active_fedora/rdf_datastream.rb', line 40
def rdf_subject &block
if block_given?
return @subject_block = block
end
@subject_block ||= lambda { |ds| "info:fedora/#{ds.pid}" }
end
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#register_vocabularies(*vocabs) ⇒ Object
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# File 'lib/active_fedora/rdf_datastream.rb', line 48
def register_vocabularies(*vocabs)
@vocabularies ||= {}
vocabs.each do |v|
if v.is_a?(RDF::Vocabulary) or (v.respond_to? :property and v.respond_to? :to_uri)
@vocabularies[v.to_uri] = v
else
raise "not an RDF vocabulary: #{v}"
end
end
ActiveFedora::Predicates.vocabularies(@vocabularies)
@vocabularies
end
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