Contents

module ETL
  module Parser
    class Parser
      include Enumerable
      class << self
        # Convert the name (string or symbol) to a parser class.
        #
        # Example:
        #   <tt>class_for_name(:fixed_width)</tt> returns a FixedWidthParser class
        def class_for_name(name)
          ETL::Parser.const_get("#{name.to_s.classify}Parser")
        end
      end
      
      # The Source object for the data
      attr_reader :source
      
      # Options Hash for the parser
      attr_reader :options
      
      def initialize(source, options={})
        @source = source
        @options = options || {}
      end
      
      # Convert the value to the specified type.
      # 
      # Parameters:
      # * <tt>name</tt>: The name of the field
      # * <tt>value</tt>: The value
      # * <tt>type</tt>: The type name (:integer, :float, :string)
      def convert(name, value, type)
        case type
        when :integer
          value.to_i
        when :float
          value.to_f
        else
          value
        end
      end
      
      protected
      def file
        File.join(File.dirname(source.control.file), source.configuration[:file])
      end
      
      def raise_with_info(error, message, file, line)
        raise error, "#{message} (line #{line} in #{file})"
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
activewarehouse-etl-0.5.0	lib/etl/parser/parser.rb
activewarehouse-etl-0.5.1	lib/etl/parser/parser.rb
activewarehouse-etl-0.6.0	lib/etl/parser/parser.rb
activewarehouse-etl-0.5.2	lib/etl/parser/parser.rb