(Ruby) Demonstrate the XML FindNextRecord Method

Imagine we have an XML file as follows:

<CompleteMultipartUpload>
  <Part>
    <PartNumber>1</PartNumber>
    <ETag>abc</ETag>
  </Part>
  <Part>
    <PartNumber>2</PartNumber>
    <ETag>def</ETag>
  </Part>
  <Part>
    <PartNumber>3</PartNumber>
    <ETag>ghi</ETag>
  </Part>
</CompleteMultipartUpload>

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require 'chilkat'

xml = Chilkat::CkXml.new()

xml.LoadXmlFile("qa_data/xml/multipartUpload.xml")

# Position ourselves at the 1st record.
xml.GetChild2(0)

# foundRec is a CkXml
foundRec = xml.FindNextRecord("PartNumber","2")
if (xml.get_LastMethodSuccess() == true)
    print "Found the record where PartNumber = 2." + "\n";
    print foundRec.getXml() + "\n";

    # Let's examine the ETag for this record...
    print "ETag for PartNumber 2 = " + foundRec.getChildContent("ETag") + "\n";

else
    print "No record exists where PartNumber = 2." + "\n";
end

# What if we want to find the record where ETag = "abc"?
# foundRec is a CkXml
foundRec = xml.FindNextRecord("ETag","abc")
if (xml.get_LastMethodSuccess() == true)
    print "Found the record where ETag = abc" + "\n";
    print foundRec.getXml() + "\n";

    # Let's examine the PartNumber for this record...
    print "Part number for Etag(abc) = " + foundRec.getChildContent("PartNumber") + "\n";

else
    print "No record exists where ETag = abc." + "\n";
end

# Go back to the XML root..
xml.GetRoot2()