diff options
Diffstat (limited to 'lib/rdf_provider.rb')
| -rw-r--r-- | lib/rdf_provider.rb | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/lib/rdf_provider.rb b/lib/rdf_provider.rb deleted file mode 100644 index 7fa3ecc..0000000 --- a/lib/rdf_provider.rb +++ /dev/null @@ -1,188 +0,0 @@ - -class String - def convert_underscore - gsub(/_./) do |m| - m.gsub!(/^_/,"") - m.upcase - end - end -end - -module Lib - module RDFProvider - - def to_rdf - HashToOwl.to_rdf(self) - end - - def uri - raise "not implemented" - end - - def rdf_title - raise "not implemented" - end - - # the rdf output is generated from the hash that is provided by this method - # the keys in the hash structure are used to defined type of the resource (literal, objectProperty, dataProperty) - # example: if the structure should contain a literal named "size" with value 5 - # * add :property_xy => 5 to your hash - # * make sure literal?(:property_xy) returns true - # * literal_name(:property_xy) must return "size" - # - def get_content_as_hash - raise "not implemented" - end - - def to_yaml - get_content_as_hash.to_yaml - end - - def rdf_ignore?( prop ) - self.class::IGNORE.index( prop ) != nil - end - - def literal?( prop ) - self.class::LITERALS.index( prop ) != nil - end - - def literal_name( prop ) - if self.class::LITERAL_NAMES.has_key?(prop) - self.class::LITERAL_NAMES[prop] - else - OT[prop.to_s.convert_underscore] - end - end - - def object_property?( prop ) - self.class::OBJECT_PROPERTIES.has_key?( prop ) - end - - def object_property_name( prop ) - return self.class::OBJECT_PROPERTIES[ prop ] - end - - def object_type( prop ) - return self.class::OBJECTS[ prop ] - end - - def class?(prop) - self.class::CLASSES.has_key?( prop ) - end - - def class_name( prop ) - return self.class::CLASSES[ prop ] - end - - end - - class HashToOwl - #include OpenTox::Owl - - def self.to_rdf( rdf_provider ) - - owl = OpenTox::Owl.create(rdf_provider.rdf_title, rdf_provider.uri ) - toOwl = HashToOwl.new(owl) - toOwl.add_content(rdf_provider) - toOwl.rdf - end - - def add_content( rdf_provider ) - @rdf_provider = rdf_provider - recursiv_add_content( @rdf_provider.get_content_as_hash, @owl.root_node ) - end - - def rdf - @owl.rdf - end - - private - def initialize(owl) - @owl = owl - @model = owl.model - end - - def recursiv_add_content( output, node ) - output.each do |k,v| - if v==nil - LOGGER.warn "skipping nil value: "+k.to_s - next - end - if @rdf_provider.rdf_ignore?(k) - #do nothing - elsif v.is_a?(Hash) - new_node = add_class( k, node ) - recursiv_add_content( v, new_node ) - elsif v.is_a?(Array) - v.each do |value| - if @rdf_provider.class?(k) - new_node = add_class( k, node ) - recursiv_add_content( value, new_node ) - else - add_object_property( k, value, node) - end - end - elsif @rdf_provider.literal?(k) - set_literal( k, v, node) - elsif @rdf_provider.object_property?(k) - add_object_property( k, v, node) - else - raise "illegal value k:"+k.to_s+" v:"+v.to_s - end - end - end - - def add_class( property, node ) - raise "no object prop: "+property.to_s unless @rdf_provider.object_property?(property) - raise "no class name: "+property.to_s unless @rdf_provider.class_name(property) - # to avoid anonymous nodes, make up uris for sub-objects - # use counter to make sure each uri is unique - # for example we will get ../confusion_matrix_cell/1, ../confusion_matrix_cell/2, ... - count = 1 - while (true) - res = Redland::Resource.new( File.join(node.uri.to_s,property.to_s+"/"+count.to_s) ) - break if @model.subject(@rdf_provider.object_property_name(property), res).nil? - count += 1 - end - clazz = Redland::Resource.new(@rdf_provider.class_name(property)) - @model.add res, RDF['type'], clazz - @model.add res, DC['title'], clazz - @model.add clazz, RDF['type'], OWL['Class'] - @model.add DC['title'], RDF['type'],OWL['AnnotationProperty'] - - objectProp = Redland::Resource.new(@rdf_provider.object_property_name(property)) - @model.add objectProp, RDF['type'], OWL['ObjectProperty'] - @model.add node, objectProp, res - return res - end - - def set_literal(property, value, node ) - raise "empty literal value "+property.to_s if value==nil || value.to_s.size==0 - raise "no literal name "+propety.to_s unless @rdf_provider.literal_name(property) - begin - l = @model.object(subject, @rdf_provider.literal_name(property)) - @model.delete node, @rdf_provider.literal_name(property), l - rescue - end - literalProp = Redland::Resource.new(@rdf_provider.literal_name(property)) - @model.add literalProp, RDF['type'],OWL['AnnotationProperty'] - @model.add node, literalProp, Redland::Literal.create(value) - end - - def add_object_property(property, value, node ) - raise "empty object property value "+property.to_s if value==nil || value.to_s.size==0 - raise "no object property name "+propety.to_s unless @rdf_provider.object_property_name(property) - raise "no object type "+property.to_s unless @rdf_provider.object_type(property) - - objectProp = Redland::Resource.new(@rdf_provider.object_property_name(property)) - @model.add objectProp, RDF['type'], OWL['ObjectProperty'] - - val = Redland::Resource.new(value) - type = Redland::Resource.new(@rdf_provider.object_type(property)) - @model.add node, objectProp, val - @model.add val, RDF['type'], type - @model.add type, RDF['type'], OWL['Class'] - end - - end -end |