Class: YOWL::Property

Inherits:
LabelledDocObject show all
Defined in:
lib/yowl/property.rb

Instance Attribute Summary

Attributes inherited from DocObject

#resource, #schema

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from LabelledDocObject

#<=>, #comment, #commentOrLabel, #definition, #editorialNotes, #hasComment?, #hasDefinition?, #hasDifferentLabel?, #hasEditorialNotes?, #label, #status

Methods inherited from DocObject

#escaped_short_name, #escaped_uri, #get_literal, #hasOtherNamespace?, #hasUri?, #ns, #ontology, #repository, #short_name, #to_s, #uri

Constructor Details

#initialize(resource, schema) ⇒ Property

Returns a new instance of Property.



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# File 'lib/yowl/property.rb', line 7

def initialize(resource, schema)
  super(resource, schema)
end

Class Method Details

.newGraphVizEdge(graph_, domainNode_, rangeNode_, constraint_ = true) ⇒ Object

Create the GraphVis Edge for all “is a” (rdf:type) associations from a node (representing a Class) to another node (always representing a Property)



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# File 'lib/yowl/property.rb', line 170

def Property.newGraphVizEdge(graph_, domainNode_, rangeNode_, constraint_ = true)
  options = {
    :arrowhead => "empty", 
    :dir => "back",
    :label => "is a", 
    :arrowsize => 0.5,
    :penwidth => 0.5,
    :constraint => constraint_
  }
  if not constraint_
    options[:style] = :dashed
  end
  return graph_.add_edges(
    rangeNode_,
    domainNode_,
    options
  )
end

Instance Method Details

#addAsGraphvizNode(graph_, nodes_, edges_) ⇒ Object

Add the current class as a GraphViz node to the given collection of nodes and to the given graph. Return the collection of nodes.



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# File 'lib/yowl/property.rb', line 94

def addAsGraphvizNode (graph_, nodes_, edges_)
  name = short_name
  if @schema.options.verbose
    puts "- Processing property #{name}"
  end
  #
  # No need to add a node twice
  #
  if nodes_.has_key? uri
    return nodes_, edges_
  end
  node = graph_.add_nodes(escaped_uri)
  node.URL = "#prop_#{short_name}"
  
  if name.include?(':')
    prefix = name.sub(/:\s*(.*)/, "")
    name = name.sub(/(.*)\s*:/, "")
    #
    # Can't get HTML labels to work
    #
    #node.label = "<TABLE BORDER=\"0\" CELLBORDER=\"1\" CELLSPACING=\"0\"><TR><TD>#{name}</TD></TR><TR><TD><I>(#{prefix})</I></TD></TR></TABLE>"
    node.label = "#{name}\n(#{prefix})"
  else
    node.label = name
  end 
  if hasComment?
    node.tooltip = comment
  end
  nodes_[uri] = node
  return nodes_, edges_
end

#domain ⇒ Object 



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# File 'lib/yowl/property.rb', line 57

def domain()
  domains = []
  @schema.model.query(
    RDF::Query::Pattern.new(@resource, YOWL::Namespaces::RDFS.domain)
  ) do |statement|
    domains << statement.object
  end  
  classes = []
  domains.each do |o|
    if o.resource?
      uri = o.to_s         
      if @schema.classes[uri]
        classes << @schema.classes[uri]
      else
        classes << uri
      end
    end
    #TODO union
  end
  return classes
end

#perPropertyDiagramAsSvg ⇒ Object

Generate a diagram for each Property, the “per property diagram”



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# File 'lib/yowl/property.rb', line 130

def perPropertyDiagramAsSvg
  #if @schema.options.verbose
  #  puts "Generating SVG Per Property Diagram for #{short_name}"
  #end

  g = GraphvizUtility.setDefaults(GraphViz.new(:G, :type => :digraph))
  g[:rankdir] = "LR"
  g.node[:fixedsize] = false
  
  nodes = Hash.new
  edges = Hash.new
  nodes, edges = addAsGraphvizNode(g, nodes, edges)
  
  #
  # Do the "outbound" associations first
  #
  #associations.each do |association|
  #  nodes, edges = association.rangeClass.addAsGraphvizNode(g, nodes, edges)
  #  nodes, edges = association.addAsGraphVizEdge(g, nodes, edges)
  #end
  
  #
  # Then do the "inbound" associations
  #
  #@schema.classes.values.to_set.each do |klass|
  #  klass.associations.each do |association|
  #    if self == association.rangeClass
  #      nodes, edges = association.rangeClass.addAsGraphvizNode(g, nodes, edges)
  #      nodes, edges = association.addAsGraphVizEdge(g, nodes, edges)
  #    end
  #  end
  #end
  
  return GraphvizUtility.embeddableSvg(g)
end

#range ⇒ Object 



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# File 'lib/yowl/property.rb', line 36

def range()
  ranges = []
  @schema.model.query(
    RDF::Query::Pattern.new(@resource, YOWL::Namespaces::RDFS.range)
  ) do |statement|
    ranges << statement.object
  end  
  classes = []
  ranges.each do |o|
    if o.resource?
      uri = o.to_s        
      if @schema.classes[uri]
        classes << @schema.classes[uri]
      else
        classes << uri
      end
    end
  end
  return classes
end

#see_alsos ⇒ Object 



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# File 'lib/yowl/property.rb', line 11

def see_alsos()
   links = []
   @schema.model.query(
     RDF::Query::Pattern.new(@resource, YOWL::Namespaces::RDFS.seeAlso)
   ) do |statement|
     links << statement.object.to_s
   end       
   return links
end

#sub_properties ⇒ Object 



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# File 'lib/yowl/property.rb', line 79

def sub_properties()
  list = []
  @schema.model.query(
    RDF::Query::Pattern.new(nil, YOWL::Namespaces::RDFS.subPropertyOf, @resource)
  ) do |statement|
    list << YOWL::Property.new(statement.subject, @schema)
  end
  return list
end

#sub_property_of ⇒ Object 



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# File 'lib/yowl/property.rb', line 21

def sub_property_of()
  parent = @schema.model.first_value(
    RDF::Query::Pattern.new(@resource, YOWL::Namespaces::RDFS.subPropertyOf)
  )
  if parent
    uri = parent.to_s
    if @schema.properties[uri]
      return @schema.properties[uri]
    else
      return uri
    end
  end
  return nil
end