| Re: Another XML Question [message #43079 is a reply to message #43077] |
Tue, 22 March 2005 14:07   |
Michael Wallace
Messages: 409
Registered: December 2003
|
Senior Member |
|
|
> OK, I'm lost again. :-(
You should have turned left at Alberquerque.
> I cannot figure out how to pull out the information from
> the CAMPAIGN_ID element for example:
>
> name: CAMPAIGN_ID
> value: 00
> units: n/a
>
> Without knowing in my code that the element CAMPAIGN_ID exists.
>
> I guess my question is this: How can I find all the sub-elements
> of CONFIGDATA in a generic way? (I can find ALL the elements in the
> file, but what I want is the first sub-elements of CONFIGDATA, then
> all of *its* sub-elements, etc.) I find the documentation uh, vague. :-(
So, if I understand your question, you want to walk the node tree
without prior knowledge of what nodes you may encounter on your journey.
The only way I know to do this is with good ol' recursion. I could
explain the recursion, but an example is much better than an explanation
in this case. In the vague IDL documentation there's a pretty good
example of tree-walking. So, I guess the question is, what about this
doesn't do what you want it to?
From the IDL Documentation...
The following code traverses a DOM tree using pre-order traversal.
PRO sample_recurse, oNode, indent
; "Visit" the node by printing its name and value
PRINT, indent GT 0 ? STRJOIN(REPLICATE(' ', indent)) : '', $
oNode->GetNodeName(), ':', oNode->GetNodeValue()
; Visit children
oSibling = oNode->GetFirstChild()
WHILE OBJ_VALID(oSibling) DO BEGIN
SAMPLE_RECURSE, oSibling, indent+3
oSibling = oSibling->GetNextSibling()
ENDWHILE
END
PRO sample
oDoc = OBJ_NEW('IDLffXMLDOMDocument')
oDoc->Load, FILENAME="sample.xml"
SAMPLE_RECURSE, oDoc, 0
OBJ_DESTROY, oDoc
END
-Mike
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
