Class: ETL::Parser::NokogiriXmlParser

Inherits:
Parser show all
Defined in:
lib/etl/parser/nokogiri_xml_parser.rb

Defined Under Namespace

Classes: Field

Instance Attribute Summary

Attributes inherited from Parser

#options, #source

Instance Method Summary collapse

Methods inherited from Parser

class_for_name

Constructor Details

#initialize(source, options = {}) ⇒ NokogiriXmlParser

Initialize the parser

  • source: The Source object

  • options: Parser options Hash



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# File 'lib/etl/parser/nokogiri_xml_parser.rb', line 11

def initialize(source, options={})
  super
  configure
end

Instance Method Details

#each ⇒ Object

Returns each row



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# File 'lib/etl/parser/nokogiri_xml_parser.rb', line 17

def each
  Dir.glob(file).each do |source|

    doc = nil

    gzip = false
    magic = "1F8B".to_i(base=16)  # Check for gzip archives
    if File.exist?(source)
      gzip = true if magic == (
        File.open(source).read(2).unpack("H2H2").to_s.to_i(base=16))
    end

    if gzip
      doc = Nokogiri::XML(Zlib::GzipReader.open(source))
    else
      doc = Nokogiri::XML(open(source))
    end
    
    doc.xpath(@collection_xpath).each do |nodeset|
      row = {}

      fields.each do |f|
        value = nodeset.xpath(f.xpath).text
        row[f.name] = value
      end
      yield row
    end

  end
end

#fields ⇒ Object

Get an array of defined fields



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# File 'lib/etl/parser/nokogiri_xml_parser.rb', line 49

def fields
  @fields ||= []
end