Xbase++

Find Direct Child with Specific Tag

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Demonstrates how to find a direct child having a specific tag.

The input XML, available at http://www.chilkatsoft.com/data/fruit.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

nSuccess := 0

oXml := CreateObject("Chilkat.Xml")

//  The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
nSuccess := oXml:LoadXmlFile("qa_data/xml/fruit.xml")
IF (nSuccess == 0)
    ? oXml:LastErrorText
    oXml:destroy()
    RETURN
ENDIF

//  Find the direct child node having the tag "meat", and 
//  return a new instance of the XML object referencing the
//  child node, if found.
oChild := oXml:FindChild("meat")
IF (oXml:LastMethodSuccess == 0)
    ? 'No direct child having the tag "meat" was found.'
ELSE
    ? "Content = " + oChild:Content
    oChild:destroy()
ENDIF

//  The same can be accomplished without creating a new 
//  XML object instance.  Instead, the FindChild2 method updates
//  the caller's internal reference to the found child, if successful.
nSuccess := oXml:FindChild2("meat")
IF (nSuccess == 1)
    //  Success!  The xml object now references the found child.
    ? "Content = " + oXml:Content
    //  Restore the reference back to the parent.
    nSuccess := oXml:GetParent2()
ELSE
    ? 'No direct child having the tag "meat" was found.'
ENDIF

oXml:destroy()