Class: Swicky::ExhibitJson::Item

Inherits:
Object
  • Object
show all
Defined in:
lib/swicky/exhibit_json/item.rb

Overview

An item in the Exhibit JSON. Each item belongs to a collection.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(element, collection) ⇒ Item

Returns a new instance of Item.

Raises:

  • (ArgumentError) 


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# File 'lib/swicky/exhibit_json/item.rb', line 12

def initialize(element, collection)
  raise(ArgumentError, "Element must have an URI, was a #{element.class.name}: #{element.inspect}") unless(element.respond_to?(:uri))
  raise(ArgumentError, "Element must always belong to a collection") unless(collection)
  @original_properties = {}
  @element = element
  @properties = {}
  @collection = collection
  create_label!
  @properties['uri'] = self.uri
  @properties['id'] = @collection.make_id(self)
  @properties['hash'] = ('h_' << Digest::MD5.hexdigest(self.uri))
end

Instance Attribute Details

#collection ⇒ Object (readonly)

Returns the value of attribute collection.



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# File 'lib/swicky/exhibit_json/item.rb', line 9

def collection
  @collection
end

#element ⇒ Object (readonly)

Returns the value of attribute element.



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# File 'lib/swicky/exhibit_json/item.rb', line 9

def element
  @element
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/swicky/exhibit_json/item.rb', line 37

def [](key)
  @properties[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/swicky/exhibit_json/item.rb', line 41

def []=(key, value)
  @properties[key] = value
end

#add_properties(properties) ⇒ Object 



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# File 'lib/swicky/exhibit_json/item.rb', line 45

def add_properties(properties)
  @original_properties = properties
  create_label!
  create_types!
  create_properties!
end

#id ⇒ Object 



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# File 'lib/swicky/exhibit_json/item.rb', line 29

def id
  @properties['id']
end

#label ⇒ Object 



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# File 'lib/swicky/exhibit_json/item.rb', line 33

def label
  @properties['label']
end

#to_json(*a) ⇒ Object 



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# File 'lib/swicky/exhibit_json/item.rb', line 52

def to_json(*a)
  @properties.to_json(*a)
end

#uri ⇒ Object 



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# File 'lib/swicky/exhibit_json/item.rb', line 25

def uri
  @element.uri.to_s
end