Redland RDF Application Framework - Ruby RDoc

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Module

Redland::RDFS

In:

rdf/redland/schemas/rdfs.rb

Methods

add_label comment comment= label

Included Modules

Redland

Constants

 Namespace.new("http://www.w3.org/2000/01/rdf-schema#")
 RDFSNS["Class"]
 RDFSNS["Resource"]
 RDFSNS["subClassOf"]
 RDFSNS["subPropertyOf"]
 RDFSNS["isDefinedBy"]
 RDFSNS["label"]
 RDFSNS["comment"]
 RDFSNS["range"]
 RDFSNS["domain"]
 RDFSNS["Literal"]
 RDFSNS["Container"]
 RDFSNS["seeAlso"]

Public Instance methods

add_label(a_label,lang=nil)

add a ‘www.w3.org/2000/01/rdf-schema#label’ to this resource. a label is a literal that can have a language. If a label for a given language is already defined, it replaces the label. If a label is not defined for a language it adds the label

 res.add_label('my label') # label created
 res.add_label('change label') #label changed to 'change label'
 res.add_label('change again','en') # label added with language English

[Source]

# File rdf/redland/schemas/rdfs.rb, line 49
  def add_label(a_label,lang=nil)
    label = Literal.new(a_label,lang)
    labels = self.get_properties(RDFS_LABEL) do |a_label| 
      if a_label.language == lang
        self.model.delete(self,RDFS_LABEL,a_label)
      end       
    end
    self.add_property(RDFS_LABEL,label)
    return self
  end

comment()

get the object with the following predicate: www.w3.org/2000/01/rdf-schema#comment‘

[Source]

# File rdf/redland/schemas/rdfs.rb, line 28
  def comment()
    self.get_property(RDFS_COMMENT).to_s
  end

comment=(a_comment)

same as the following

 model.add(this,Resource.new('http://www.w3.org/2000/01/rdf-schema#comment','comment')

[Source]

# File rdf/redland/schemas/rdfs.rb, line 34
  def comment=(a_comment)
    if a_comment.class == String
      self.delete_property(RDFS_COMMENT)
      self.add_property(RDFS_COMMENT,a_comment)
    end
    return self
  end

label(lang=nil)

return the label for this resource if the lang is defined, return the label for this language if no label found return nil

[Source]

# File rdf/redland/schemas/rdfs.rb, line 63
  def label(lang=nil)
    self.get_properties(RDFS_LABEL) do |label|
      if label.language == lang
        return label
      end
    end
    return nil
  end

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