Class: GtfsReader::BulkFeedHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/gtfs_reader/bulk_feed_handler.rb

Instance Method Summary collapse

Constructor Details

#initialize(bulk_size, args = [], &block) ⇒ BulkFeedHandler

Returns a new instance of BulkFeedHandler.



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# File 'lib/gtfs_reader/bulk_feed_handler.rb', line 3

def initialize(bulk_size, args=[], &block)
  @bulk_size = bulk_size
  @callbacks = {}
  BulkFeedHandlerDsl.new(self).instance_exec *args, &block
end

Instance Method Details

#callback?(kind, filename) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gtfs_reader/bulk_feed_handler.rb', line 52

def callback?(kind, filename)
  @callbacks.key? filename and @callbacks[filename].key? kind
end

#create_callback(kind, filename, block) ⇒ Object 



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# File 'lib/gtfs_reader/bulk_feed_handler.rb', line 44

def create_callback(kind, filename, block)
  Log.debug do
    kind_str = kind.to_s.center(:before.to_s.length).magenta
    "create callback (#{kind_str}) #{filename.to_s.red}"
  end
  callbacks(filename)[kind] = block
end

#handle_file(filename, reader) ⇒ Object 



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# File 'lib/gtfs_reader/bulk_feed_handler.rb', line 13

def handle_file(filename, reader)
  unless @callbacks.key? filename
    Log.warn { "No handler registered for #{filename.to_s.red}.txt" }
    return
  end

  calls = callbacks filename
  calls[:before].call if calls.key? :before
  read_row = calls[:read]

  values = []
  total = bulk_count = 0
  cols = reader.col_names
  reader.each do |row|
    values << (read_row ? read_row.call(row) : row)
    bulk_count += 1

    if bulk_count == @bulk_size
      total += bulk_count
      calls[:bulk].call values, bulk_count, total, cols
      bulk_count = 0
      values = []
    end
  end

  unless bulk_count == 0
    calls[:bulk].call values, bulk_count, (total + bulk_count), cols
  end
  nil
end

#handler?(filename) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gtfs_reader/bulk_feed_handler.rb', line 9

def handler?(filename)
  @callbacks.key? filename
end