Class: Fsp::Proxies::FairDataPoint

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

Overview

Your code goes here…

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url:) ⇒ FairDataPoint

Returns a new instance of FairDataPoint.



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# File 'lib/fsp/proxies.rb', line 18

def initialize(url:)
  @url = url
  @cite_as = ''
  @describedby = ''
  @items = ''
  @html = ''
  @types = ''
end

Instance Attribute Details

#cite_as ⇒ Object

Returns the value of attribute cite_as.



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# File 'lib/fsp/proxies.rb', line 16

def cite_as
  @cite_as
end

#describedby ⇒ Object

Returns the value of attribute describedby.



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# File 'lib/fsp/proxies.rb', line 16

def describedby
  @describedby
end

#html ⇒ Object

Returns the value of attribute html.



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# File 'lib/fsp/proxies.rb', line 16

def html
  @html
end

#items ⇒ Object

Returns the value of attribute items.



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# File 'lib/fsp/proxies.rb', line 16

def items
  @items
end

#types ⇒ Object

Returns the value of attribute types.



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# File 'lib/fsp/proxies.rb', line 16

def types
  @types
end

#url ⇒ Object

Returns the value of attribute url.



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# File 'lib/fsp/proxies.rb', line 16

def url
  @url
end

Instance Method Details

#get_cite_as(repo:) ⇒ Object 



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# File 'lib/fsp/proxies.rb', line 53

def get_cite_as(repo:)
  query = SPARQL.parse("
      PREFIX dcterms: <http://purl.org/dc/terms/>
      SELECT * WHERE {
      ?s a <http://purl.org/spar/datacite/Identifier> .
      ?s dcterms:identifier ?id
      }")
  id = ''
  repo.query(query) do |result|
    warn result.inspect
    id = result[:id].to_s
  end

  link = LinkHeader.new([[id, [%w[rel cite-as]]]]).to_html
  warn "LINK: #{link}"
  link
end

#get_described_by(repo:) ⇒ Object 



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# File 'lib/fsp/proxies.rb', line 71

def get_described_by(repo:)
  query = SPARQL.parse("
      PREFIX dcterms: <http://purl.org/dc/terms/>
      PREFIX ldp: <http://www.w3.org/ns/ldp#>
      SELECT distinct ?meta WHERE {
        VALUES ?pred {<https://w3id.org/fdp/fdp-o#metadataIssued> <http://rdf.biosemantics.org/ontologies/fdp-o#metadataIssued>}
        ?meta ?pred ?o .
      }")
  ids = []
  repo.query(query) do |result|
    warn result.inspect
    ids << [result[:meta].to_s, [%w[rel describedby], %w[type text/turtle]]]
  end

  link = LinkHeader.new(ids).to_html
  warn "LINK: #{link}"
  link
end

#get_items(repo:) ⇒ Object 



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# File 'lib/fsp/proxies.rb', line 90

def get_items(repo:)
  query = SPARQL.parse("
      PREFIX dcterms: <http://purl.org/dc/terms/>
      PREFIX ldp: <http://www.w3.org/ns/ldp#>
      SELECT distinct ?id WHERE {
      ?s a ldp:DirectContainer .
      ?s ldp:contains ?id
      }")
  ids = []
  repo.query(query) do |result|
    warn result.inspect
    ids << [result[:id].to_s, [%w[rel item], %w[type text/html]]]
  end

  link = LinkHeader.new(ids).to_html
  warn "LINK: #{link}"
  link
end

#get_types(repo:) ⇒ Object 



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# File 'lib/fsp/proxies.rb', line 109

def get_types(repo:)
  # https://schema.org/CreativeWork  http://www.re3data.org/schema/3-0#Repository
  # https://schema.org/DataCatalog   http://www.re3data.org/schema/3-0#dataCatalog dcat:Catalog
  # https://schema.org/Dataset  dcat:Dataset
  # https://schema.org/DataDownload  dcat:Distribution

  query = SPARQL.parse("
    PREFIX dcterms: <http://purl.org/dc/terms/>
    PREFIX ldp: <http://www.w3.org/ns/ldp#>
    SELECT distinct ?type WHERE {
      VALUES ?type {<https://schema.org/CreativeWork>  <http://www.re3data.org/schema/3-0#Repository> <https://w3id.org/fdp/fdp-o#FAIRDataPoint> <https://w3id.org/fdp/fdp-o#MetadataService> <http://www.w3.org/ns/dcat#DataService>
                  <https://schema.org/DataCatalog>  <http://www.re3data.org/schema/3-0#dataCatalog> <http://www.w3.org/ns/dcat#Catalog>
                  <https://schema.org/Dataset>  <http://www.w3.org/ns/dcat#Dataset>
                  <https://schema.org/DataDownload>  <http://www.w3.org/ns/dcat#Distribution> }

      VALUES ?pred {<https://w3id.org/fdp/fdp-o#metadataIssued> <http://rdf.biosemantics.org/ontologies/fdp-o#metadataIssued>}
      ?s a ?type .
      ?s ?pred ?val . # the main subject will have the metadata issued property
    }")
  types = []
  links = []
  link = ''
  repo.query(query) do |result|
    warn result.inspect
    if %w[http://www.re3data.org/schema/3-0#Repository https://w3id.org/fdp/fdp-o#FAIRDataPoint
          https://w3id.org/fdp/fdp-o#MetadataService http://www.w3.org/ns/dcat#DataService].include?(result[:type].to_s)
      types << 'https://schema.org/CreativeWork'
      types << result[:type].to_s
      
    elsif %w[http://www.re3data.org/schema/3-0#dataCatalog
             http://www.w3.org/ns/dcat#Catalog].include?(result[:type].to_s)
      types << 'https://schema.org/DataCatalog'
      types << result[:type].to_s
      
    elsif %w[http://www.w3.org/ns/dcat#Dataset].include?(result[:type].to_s)
      types << 'https://schema.org/Dataset'
      types << result[:type].to_s
      
    elsif %w[http://www.w3.org/ns/dcat#Distribution].include?(result[:type].to_s)
      types << 'https://schema.org/DataDownload'
      types << result[:type].to_s
      
    else
      types << 'https://schema.org/CreativeWork'
    end

    types.each do |type|
      links << [type, [%w[rel type]]]
    end
    link = LinkHeader.new(links).to_html
    warn "LINK: #{link}"
    break
  end
  link
end

#proxy ⇒ Object 



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# File 'lib/fsp/proxies.rb', line 27

def proxy
  self.html = Fsp::Proxies::WebUtils.fetch(
    url: url,
    headers: { 'Accept' => 'text/html' }
  )
  ttl = Fsp::Proxies::WebUtils.fetch(
    url: url,
    headers: { 'Accept' => 'text/turtle' }
  )
  warn 'no turtle' unless ttl
  return self unless ttl

  repo = RDF::Repository.new
  RDF::Reader.for(:turtle).new(StringIO.new(ttl)) do |reader|
    reader.each_statement do |statement|
      repo << statement
      # warn statement.to_s
    end
  end

  self.cite_as = get_cite_as(repo: repo) # returns html links
  self.items = get_items(repo: repo)
  self.describedby = get_described_by(repo: repo)
  self.types = get_types(repo: repo)
end

#to_html ⇒ Object 



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# File 'lib/fsp/proxies.rb', line 165

def to_html()
  html = self.html
  # warn "HTML " + html
  match = html.match(/(.*?)(>)(<link)(.*)/)
  # warn "MATCH " + match.inspect.to_s
  pre = match[1]+match[2]
  post = match[3]+ match[4]
  final = pre + self.cite_as + self.types + self.describedby + self.items + post 
  final
end