(Lianja) Insert XML into existing XML by calling InsertChildTreeAfter

Demonstrates how to insert an XML tree or subtree into another XML document using the InsertChildTreeAfter method.

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// Build the 1st XML document:
// <x1>
//     <a1>1</a1>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

loXml = createobject("CkXml")
loXml.Tag = "x1"
loXml.UpdateChildContent("a1","1")
loXml.UpdateChildContent("a2","2")
loXml.UpdateChildContent("a3","3")

// Build a 2nd XML document:

// <x2>
//   <b1>11</b1>
//   <b2>22</b2>
//   <b3>33</b3>
// </x2>

loXml2 = createobject("CkXml")
loXml2.Tag = "x2"
loXml2.UpdateChildContent("b1","11")
loXml2.UpdateChildContent("b2","22")
loXml2.UpdateChildContent("b3","33")

// We want to insert xml2 into xml to get this:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

// Insert xml2 after "a1"

lnIndex = loXml.TagIndex("a1")
if (lnIndex < 0) then
    ? "a1 not found."
    release loXml
    release loXml2
    return
endif

loXml.InsertChildTreeAfter(lnIndex,loXml2)

? loXml.GetXml()

// The result is:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

// Note: xml2 now points to the subtree within xml.
// For example, update "b3" and then see how it's updated within the merged document:
loXml2.UpdateChildContent("b3","33333333")

? loXml.GetXml()

// The result:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33333333</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>


release loXml
release loXml2