Redland RDF Application Framework - Ruby RDoc - Module: Redland::RDFS

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Module | Redland::RDFS
In: | rdf/redland/schemas/rdfs.rb

### Methods

add_label comment comment= label

### Included Modules

Redland

### Constants

RDFSNS | = | Namespace.new("http://www.w3.org/2000/01/rdf-schema#")
RDFS_CLASS | = | RDFSNS["Class"]
RDFS_RESOURCE | = | RDFSNS["Resource"]
RDFS_SUBCLASSOF | = | RDFSNS["subClassOf"]
RDFS_SUBPROPERTYOF | = | RDFSNS["subPropertyOf"]
RDFS_ISDEFINEDBY | = | RDFSNS["isDefinedBy"]
RDFS_LABEL | = | RDFSNS["label"]
RDFS_COMMENT | = | RDFSNS["comment"]
RDFS_RANGE | = | RDFSNS["range"]
RDFS_DOMAIN | = | RDFSNS["domain"]
RDFS_LITERAL | = | RDFSNS["Literal"]
RDFS_CONTAINER | = | RDFSNS["Container"]
RDFS_SEEALSO | = | 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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(C) Copyright 2004-2011 Dave Beckett, (C) Copyright 2004-2005 University of Bristol