Class: Chicago::ETL::IdentifiableDimensionKeyBuilder Private

Inherits:
KeyBuilder
  • Object
show all
Defined in:
lib/chicago/etl/key_builder.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Key builder for identifiable dimensions.

This should not be instantiated directly, use KeyBuilder.for_dimension.

Instance Method Summary collapse

Methods inherited from KeyBuilder

for_table, #initialize

Constructor Details

This class inherits a constructor from Chicago::ETL::KeyBuilder

Instance Method Details

#key(row) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Raises:

  • (KeyError) 


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# File 'lib/chicago/etl/key_builder.rb', line 127

def key(row)
  raise KeyError.new("Row does not have an original_id field") unless row.has_key?(:original_id)
  super
end

#original_key(row) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/chicago/etl/key_builder.rb', line 132

def original_key(row)
  row[:original_id]
end

#original_key_select_fragment ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/chicago/etl/key_builder.rb', line 136

def original_key_select_fragment
  :original_id
end