DataFlex

Find Direct Child with Specific Tag

See more XML Examples

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>

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoXml
    Variant vChild
    Handle hoChild
    String sTemp1
    Boolean bTemp1

    Move False To iSuccess

    Get Create (RefClass(cComChilkatXml)) To hoXml
    If (Not(IsComObjectCreated(hoXml))) Begin
        Send CreateComObject of hoXml
    End

    // The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
    Get ComLoadXmlFile Of hoXml "qa_data/xml/fruit.xml" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoXml To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Find the direct child node having the tag "meat", and 
    // return a new instance of the XML object referencing the
    // child node, if found.
    Get ComFindChild Of hoXml "meat" To vChild
    If (IsComObject(vChild)) Begin
        Get Create (RefClass(cComChilkatXml)) To hoChild
        Set pvComObject Of hoChild To vChild
    End
    Get ComLastMethodSuccess Of hoXml To bTemp1
    If (bTemp1 = False) Begin
        Showln 'No direct child having the tag "meat" was found.'
    End
    Else Begin
        Get ComContent Of hoChild To sTemp1
        Showln "Content = " sTemp1
        Send Destroy of hoChild
    End

    // 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.
    Get ComFindChild2 Of hoXml "meat" To iSuccess
    If (iSuccess = True) Begin
        // Success!  The xml object now references the found child.
        Get ComContent Of hoXml To sTemp1
        Showln "Content = " sTemp1
        // Restore the reference back to the parent.
        Get ComGetParent2 Of hoXml To iSuccess
    End
    Else Begin
        Showln 'No direct child having the tag "meat" was found.'
    End



End_Procedure