Xbase++

Iterate over Direct Child Nodes by Index

See more XML Examples

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>

Xbase++

LOCAL nSuccess
LOCAL oXml
LOCAL oChild
LOCAL i

nSuccess := 0

oXml := CreateObject("Chilkat.Xml")

//  The sample input XML is available at http://www.chilkatsoft.com/data/get_child.xml
nSuccess := oXml:LoadXmlFile("get_child.xml")
IF (nSuccess != 1)
    ? oXml:LastErrorText
    oXml:destroy()
    RETURN
ENDIF

//  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
? "NumChildren = " + Str(oXml:NumChildren)

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

FOR i := 0 TO oXml:NumChildren - 1
    //   access the tag and content directly by index:
    ? Str(i) + ": " + oXml:GetChildTagByIndex(i) + " : " + oXml:GetChildContentByIndex(i)

NEXT
? "-----"

//  Do the same as the above loop, but get the child node
//  and access the Tag and Content properties:
FOR i := 0 TO oXml:NumChildren - 1
    oChild := oXml:GetChild(i)
    ? Str(i) + ": " + oChild:Tag + " : " + oChild:Content
    oChild:destroy()
NEXT
? "-----"

//  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 oXml:NumChildren - 1
    //  Navigate to the Nth child.  
    nSuccess := oXml:GetChild2(i)
    ? Str(i) + ": " + oXml:Tag + " : " + oXml:Content
    //  Navigate back up to the parent:
    nSuccess := oXml:GetParent2()
NEXT
? "-----"

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

oXml:destroy()