CFXML: Probing XMLDOM in ColdFusion - How do we get at the Comment node?

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Well most of the document has been sliced and diced, how are we to get to the comment, which also happens to be a node in the XMLDOC? Review the following snippet. The "comment" happens to be a comment to the root element rather than to the document itself. Also note that trying to cfdump a string gets you a string and it is only when you cfdump a structure that you would get the structure of the node, as we have seen in the previous examples.

<cfset mydoc = XmlParse(xmldoc)>
<cfset wchild=#mydoc.XMLComment#>
mydoc.XMLComment=
<cfdump var="#wchild#"><!---returns [empty string]--->
<br/>
<cfoutput>
#wchild#
</cfoutput>
<br/>
<cfset wnodes=#mydoc.XMLRoot.XMLName#>
<cfoutput>
mydoc.XMLRoot.XMLName=
#wnodes#
</cfoutput>
<br/>
<cfdump var="#wnodes#">
<br/>
<cfset wcomnt=#mydoc.wclass.XMLComment#>
<cfoutput>
mydoc.wclass.XMLComment=
"
#wcomnt#
"
</cfoutput>

The display in the browser would appear as follows:

Summary

This tutorial clearly shows two ways to probe the XMLDOM in ColdFusion. In the first method, it accesses via the object created using Microsoft ActiveX, and in the second the XMLDOC object is probed using its XML File. The syntax of accessing is different and the reader is warned to check which of these are used. In case you are using the second method with XMLDOC via this file reference, please refer to Macromedia's documentation. The detailed example illustrated in this tutorial should help in understanding the documentation.

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