(PowerBuilder) Iterate over Direct Child Nodes by Index

Demonstrates some ways to iterate over direct child nodes by index.

The input XML, available at http://www.chilkatsoft.com/data/get_child.xml, is this:

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Xml
oleobject loo_Child
integer li_Success
integer i

loo_Xml = create oleobject
// Use "Chilkat_9_5_0.Xml" for versions of Chilkat < 10.0.0
li_rc = loo_Xml.ConnectToNewObject("Chilkat.Xml")
if li_rc < 0 then
    destroy loo_Xml
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// The sample input XML is available at http://www.chilkatsoft.com/data/get_child.xml
li_Success = loo_Xml.LoadXmlFile("get_child.xml")
if li_Success <> 1 then
    Write-Debug loo_Xml.LastErrorText
    destroy loo_Xml
    return
end if

// The NumChildren property contains the number of direct
// child nodes.  Note: The child nodes under "xyz" are NOT
// direct children of "root".  Therefore, the "root" node has
// 7 direct children
Write-Debug "NumChildren = " + string(loo_Xml.NumChildren)

// Iterate over the direct children by index. The first child
// is at index 0.

for i = 0 to loo_Xml.NumChildren - 1
    //  access the tag and content directly by index:
    Write-Debug string(i) + ": " + loo_Xml.GetChildTagByIndex(i) + " : " + loo_Xml.GetChildContentByIndex(i)

next
Write-Debug "-----"

// Do the same as the above loop, but get the child node
// and access the Tag and Content properties:
for i = 0 to loo_Xml.NumChildren - 1
    loo_Child = loo_Xml.GetChild(i)
    Write-Debug string(i) + ": " + loo_Child.Tag + " : " + loo_Child.Content
    destroy loo_Child
next
Write-Debug "-----"

// Do the same as the above loop, but instead of creating
// a new object instance for each child, call GetChild2 to
// update the object's reference instead.
for i = 0 to loo_Xml.NumChildren - 1
    // Navigate to the Nth child.  
    li_Success = loo_Xml.GetChild2(i)
    Write-Debug string(i) + ": " + loo_Xml.Tag + " : " + loo_Xml.Content
    // Navigate back up to the parent:
    li_Success = loo_Xml.GetParent2()
next
Write-Debug "-----"

// Notice that the Content of the "xyz" node is empty.  This is correct.
// The "xyz" node has no Content, but 2 direct children


destroy loo_Xml