Module: SkyDB::Query::Ast::SelectionFieldSyntaxNode

Defined in:
lib/skydb/query/ast/selection_field_syntax_node.rb

Instance Method Summary collapse

Instance Method Details

#generate ⇒ Object

Generates the SelectionField object from the node.



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# File 'lib/skydb/query/ast/selection_field_syntax_node.rb', line 6

def generate
  field = SkyDB::Query::SelectionField.new()

  # If there is an expression present then use it.
  if respond_to?('expression')
    field.expression = expression.text_value

  # Otherwise we'll typically use the whole value unless there is an
  # aggregation type mentioned. An example of this is: "count()".
  elsif !respond_to?('aggregation_type')
    field.expression = text_value
  end

  field.alias_name = alias_name.text_value if respond_to?('alias_name')
  field.aggregation_type = aggregation_type.text_value.downcase.to_sym if respond_to?('aggregation_type')
  return field
end