Class: VirtualAssembly::Semantizer::SemanticProperty

Inherits:
Object
  • Object
show all
Defined in:
lib/virtual_assembly/semantizer/semantic_property.rb

Overview

The SemanticPropety class is designed to turn properties of objects into linked data.

A SemanticProperty has a name and a corresponding value that can be fetched later (so its value would be up to date).

This class is intented to be used through the SemanticObject class.

For instance, we can tell that the name of a Person object refers to the linked data concept “name” from the FOAF project. The name of the property would be the uri of the FOAF:name property while the value would be the attribute reader of the name of the Person object.

You should use a block to pass the value like so: SemanticProperty.new(“xmlns.com/foaf/0.1/name”) selfself.name

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, &valueGetter) ⇒ SemanticProperty

“xmlns.com/foaf/0.1/name” or “@id” for instance.

property when requested.

Parameters:

  • name —

    The name of the property, like

  • valueGetter —

    A Proc used to retrieve the value of the



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# File 'lib/virtual_assembly/semantizer/semantic_property.rb', line 53

def initialize(name, &valueGetter)
    @name = name
    @valueGetter = valueGetter
end

Instance Attribute Details

#name ⇒ Object

The name of the property. It generally points to an uri like “xmlns.com/foaf/0.1/name” or it is used to define a reserved linked data property like “@id”.

This should be a String.



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# File 'lib/virtual_assembly/semantizer/semantic_property.rb', line 41

def name
  @name
end

#valueGetter ⇒ Object

The function to call when the value is requested.

This should be a Proc passed as a Block.



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# File 'lib/virtual_assembly/semantizer/semantic_property.rb', line 46

def valueGetter
  @valueGetter
end

Instance Method Details

#value ⇒ Object

Fetch and returns the value associated to this property.



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# File 'lib/virtual_assembly/semantizer/semantic_property.rb', line 59

def value
    return @valueGetter.call
end