class RETS::Base::SAXMetadata

SAX parser for the GetMetadata call.

Attributes

rets_data[RW]

Public Class Methods

new(block) click to toggle source
# File lib/rets/base/sax_metadata.rb, line 5
def initialize(block)
  @rets_data = {:delimiter => "\t"}
  @block = block
  @parent = {}
end

Public Instance Methods

characters(string) click to toggle source
# File lib/rets/base/sax_metadata.rb, line 39
def characters(string)
  @buffer << string if @current_tag
end
end_element(tag) click to toggle source
# File lib/rets/base/sax_metadata.rb, line 43
def end_element(tag)
  return unless @current_tag

  if @current_tag == "COLUMNS"
    @columns = @buffer.split(@rets_data[:delimiter])
  elsif tag == "DATA"
    data = {}

    list = @buffer.split(@rets_data[:delimiter])
    list.each_index do |index|
      next if @columns[index].nil? or @columns[index] == ""
      data[@columns[index]] = list[index]
    end

    @parent[:data].push(data)
  elsif tag == @parent[:tag]
    @block.call(@parent[:name], @parent[:attrs], @parent[:data])
    @parent[:tag] = nil
  end
end
start_element(tag, attrs) click to toggle source
# File lib/rets/base/sax_metadata.rb, line 11
def start_element(tag, attrs)
  @current_tag = nil

  # Figure out if the request is a success
  if tag == "RETS"
    @rets_data[:code], @rets_data[:text] = attrs.first.last, attrs.last.last
    if @rets_data[:code] != "0" and @rets_data[:code] != "20201"
      raise RETS::APIError.new("#{@rets_data[:code]}: #{@rets_data[:text]}", @rets_data[:code], @rets_data[:text])
    end

  elsif tag == "SYSTEM"
    @rets_data[:system_id] = attrs.first.last

  # Parsing data
  elsif tag == "COLUMNS" or tag == "DATA"
    @buffer = ""
    @current_tag = tag

  # Start of the parent we're working with
  elsif tag =~ /^METADATA-(.+)/
    @parent[:tag] = tag
    @parent[:name] = $1
    @parent[:data] = []
    @parent[:attrs] = {}
    attrs.each {|attr| @parent[:attrs][attr[0]] = attr[1] }
  end
end