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module OpenTox
module Owl
attr_reader :uri
def initialize
@model = Redland::Model.new Redland::MemoryStore.new
@parser = Redland::Parser.new
@serializer = Redland::Serializer.ntriples
# read OT Ontology
#@parser.parse_into_model(@model,"http://opentox.org/data/documents/development/RDF%20files/OpenToxOntology/at_download/file")
@parser.parse_string_into_model(@model,File.read(File.join(File.dirname(__FILE__),"opentox.owl")),'/')
# reate an anonymous resource for metadata
# this has to be rewritten with an URI as soon as the resource has been saved at an definitive location
tmp = @model.create_resource
@model.add tmp, RDF['type'], OWL['Ontology']
@model.add tmp, RDF['type'], OT[self.owl_class]
end
def uri=(uri)
@uri = uri
uri = Redland::Uri.new(uri)
# rewrite uri
@model.subjects(RDF['type'],OT[self.owl_class]).each do |me|
@model.delete(me,RDF['type'],OT[self.owl_class])
@model.add(uri,RDF['type'],OT[self.owl_class])
id = @model.object(me, DC['identifier'])
@model.delete me, DC['identifier'], id
# find/replace metadata
@model.find(me, nil, nil) do |s,p,o|
@model.delete s,p,o
@model.add uri,p,o
end
@model.add uri, DC['identifier'], @uri
end
end
def title
# I have no idea, why 2 subjects are returned
# iterating over all subjects leads to memory allocation problems
# SPARQL queries also do not work
me = @model.subjects(RDF['type'],OT[self.owl_class])[1]
@model.object(me, DC['title']).to_s
end
def title=(title)
me = @model.subject(RDF['type'],OT[self.owl_class])
begin
t = @model.object(me, DC['title'])
@model.delete me, DC['title'], t
rescue
end
@model.add me, DC['title'], title
end
def source
me = @model.subject(RDF['type'],OT[self.owl_class])
@model.object(me, DC['source']).to_s unless me.nil?
end
def source=(source)
me = @model.subject(RDF['type'],OT[self.owl_class])
begin
t = @model.object(me, DC['source'])
@model.delete me, DC['source'], t
rescue
end
@model.add me, DC['source'], source
end
def identifier
me = @model.subject(RDF['type'],OT[self.owl_class])
@model.object(me, DC['identifier']).to_s unless me.nil?
end
def owl_class
self.class.to_s.sub(/^OpenTox::/,'').sub(/::.*$/,'')
end
def read(uri)
@parser.parse_into_model(@model,uri)
@uri = uri
end
def rdf=(rdf)
@uri = '/' unless @uri
@parser.parse_string_into_model(@model,rdf,@uri)
end
def rdf
@model.to_string
end
def to_ntriples
@serializer.model_to_string(Redland::Uri.new(@uri), @model)
end
def parameters=(params)
params.each do |name, settings|
parameter = @model.create_resource
@model.add parameter, RDF['type'], OT['Parameter']
@model.add parameter, DC['title'], name
@model.add parameter, OT['paramScope'], settings[:scope]
@model.add parameter, OT['paramValue'], settings[:value]
end
end
=begin
def create_owl_statement(name,value)
r = @model.create_resource
dc_class = DC[name.gsub(/^[a-z]/) { |a| a.upcase }] # capitalize only the first letter
#puts "DC:" + name.gsub(/^[a-z]/) { |a| a.upcase }
@model.add dc_class, RDF['type'], OWL["Class"]
@model.add r, RDF['type'], dc_class
@model.add r, DC[name], value
end
def method_missing(name, *args)
# create magic setter methods
if /=/ =~ name.to_s
create_owl_statement name.to_s.sub(/=/,''), args.first
else
raise "No method #{name}"
end
end
=end
end
end
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