Class: Coradoc::Reference::Catalog::Composite

Inherits:
Object
  • Object
show all
Includes:
Protocol
Defined in:
lib/coradoc/reference/catalog/composite.rb

Overview

Composes multiple catalogs. Lookup asks EVERY child and merges the hits: exactly one hit returns the Content; several hits return an Array (which the Resolver surfaces per the ambiguous: policy). Precedence between catalogs is a resolver/policy concern, not a lookup concern:

Composite.new(
Local.from_doc(doc),
Collection.from_manifest(...),
Remote.new(client: http_client)
)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*children) ⇒ Composite

Returns a new instance of Composite.



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# File 'lib/coradoc/reference/catalog/composite.rb', line 22

def initialize(*children)
  @children = children.flatten
end

Instance Attribute Details

#children ⇒ Object (readonly)

Returns the value of attribute children.



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# File 'lib/coradoc/reference/catalog/composite.rb', line 20

def children
  @children
end

Instance Method Details

#ambiguous?(address) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coradoc/reference/catalog/composite.rb', line 40

def ambiguous?(address)
  result = lookup(address)
  result.is_a?(Array) && result.size > 1
end

#each_pair(&block) ⇒ Object 



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# File 'lib/coradoc/reference/catalog/composite.rb', line 45

def each_pair(&block)
  return to_enum(:each_pair) unless block_given?

  children.each do |catalog|
    catalog.each_pair(&block)
  end
end

#lookup(address) ⇒ Object 



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# File 'lib/coradoc/reference/catalog/composite.rb', line 26

def lookup(address)
  results = []
  children.each do |catalog|
    result = catalog.lookup(address)
    next if result.nil?

    results.concat(Array(result))
  end
  return nil if results.empty?
  return results.first if results.size == 1

  results
end

#recognizes_scheme?(scheme) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coradoc/reference/catalog/composite.rb', line 53

def recognizes_scheme?(scheme)
  children.any? { |catalog| catalog.recognizes_scheme?(scheme) }
end