Lua

Demonstrate the XML FindNextRecord Method

See more XML Examples

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>

We want to find the record where PartNumber = 2. To do so, we simply position ourselves at the first "Part" tag, and then call FindNextRecord. (See below..) Lua

local chilkat = require("chilkat")

local xml = chilkat.Xml.new()

xml:load_xml_file("qa_data/xml/multipartUpload.xml")

-- Position ourselves at the 1st record.
xml:get_child2(0)

local foundRec = xml:find_next_record("PartNumber", "2")
if xml.last_method_success then
    print("Found the record where PartNumber = 2.")
    print(foundRec:get_xml())

    -- Let's examine the ETag for this record...
    print("ETag for PartNumber 2 = " .. foundRec:get_child_content("ETag"))
else
    print("No record exists where PartNumber = 2.")
end

-- What if we want to find the record where ETag = "abc"?
foundRec = xml:find_next_record("ETag", "abc")
if xml.last_method_success then
    print("Found the record where ETag = abc")
    print(foundRec:get_xml())

    -- Let's examine the PartNumber for this record...
    print("Part number for Etag(abc) = " .. foundRec:get_child_content("PartNumber"))
else
    print("No record exists where ETag = abc.")
end

-- Go back to the XML root..
xml:get_root2()