(Objective-C) 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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#import <CkoXml.h>

CkoXml *xml = [[CkoXml alloc] init];

[xml LoadXmlFile: @"qa_data/xml/multipartUpload.xml"];

// Position ourselves at the 1st record.
[xml GetChild2: [NSNumber numberWithInt: 0]];

CkoXml *foundRec = [xml FindNextRecord: @"PartNumber" contentPattern: @"2"];
if (xml.LastMethodSuccess == YES) {
    NSLog(@"%@",@"Found the record where PartNumber = 2.");
    NSLog(@"%@",[foundRec GetXml]);

    // Let's examine the ETag for this record...
    NSLog(@"%@%@",@"ETag for PartNumber 2 = ",[foundRec GetChildContent: @"ETag"]);

}
else {
    NSLog(@"%@",@"No record exists where PartNumber = 2.");
}

// What if we want to find the record where ETag = "abc"?
foundRec = [xml FindNextRecord: @"ETag" contentPattern: @"abc"];
if (xml.LastMethodSuccess == YES) {
    NSLog(@"%@",@"Found the record where ETag = abc");
    NSLog(@"%@",[foundRec GetXml]);

    // Let's examine the PartNumber for this record...
    NSLog(@"%@%@",@"Part number for Etag(abc) = ",[foundRec GetChildContent: @"PartNumber"]);

}
else {
    NSLog(@"%@",@"No record exists where ETag = abc.");
}

// Go back to the XML root..
[xml GetRoot2];