Class: Legion::Data::Extract::Handlers::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/legion/data/extract/handlers/base.rb

Direct Known Subclasses

Csv, Docx, Html, Json, Jsonl, Markdown, Pdf, Pptx, Text, Vtt, Xlsx

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.registry ⇒ Object (readonly)

Returns the value of attribute registry.



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# File 'lib/legion/data/extract/handlers/base.rb', line 11

def registry
  @registry
end

Class Method Details

.available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/data/extract/handlers/base.rb', line 45

def available?
  return true if gem_name.nil?

  require gem_name
  true
rescue LoadError
  false
end

.extensions ⇒ Object 



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# File 'lib/legion/data/extract/handlers/base.rb', line 38

def extensions = []

.extract(_source) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/legion/data/extract/handlers/base.rb', line 41

def extract(_source)
  raise NotImplementedError, "#{name} must implement .extract"
end

.for_type(type) ⇒ Object 



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# File 'lib/legion/data/extract/handlers/base.rb', line 28

def for_type(type)
  @registry[type&.to_sym]
end

.gem_name ⇒ Object 



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# File 'lib/legion/data/extract/handlers/base.rb', line 39

def gem_name = nil

.inherited(subclass) ⇒ Object 



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# File 'lib/legion/data/extract/handlers/base.rb', line 13

def inherited(subclass)
  super
  # Deferred registration — subclass defines type after class body loads
  TracePoint.new(:end) do |tp|
    if tp.self == subclass
      register(subclass) if subclass.respond_to?(:type) && subclass.type
      tp.disable
    end
  end.enable
end

.register(handler_class) ⇒ Object 



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# File 'lib/legion/data/extract/handlers/base.rb', line 24

def register(handler_class)
  @registry = @registry.merge(handler_class.type => handler_class).freeze
end

.supported_types ⇒ Object 



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# File 'lib/legion/data/extract/handlers/base.rb', line 32

def supported_types
  @registry.keys
end

.type ⇒ Object

Override in subclasses



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# File 'lib/legion/data/extract/handlers/base.rb', line 37

def type = nil