Re: XPath selections

[Tobias McNulty]

If I call selectSingleNode on a given root, with a expression such 
as "[EMAIL PROTECTED]", what actual nodes does Xalan search?  I am 
running Xerces to handle XML parsing and DOM.  My concern is this: 
since attributes are Nodes in Xerces, will Xalan test against _all_ 
the node children of 'object', including its elements, text nodes, 
etc., looking for the attribute 'id'?

Thanks,
Toby
I did more tests; it appears that selectSingleNode does search the 
other direct children.  It also appears to search _all_ the children 
of the node, for example if I have:

<root>
        <object>
                <data>
                        <data>
                                <data>
                                        <r/>
                                        <r/>
                                </data>
                        </data>
                </data>
                <prop id="1"/>
        </object>
</root>
and I do a selectSingleNode with <root> as the context and the XPath 
expr "[EMAIL PROTECTED]", Xalan appears to run through the data tree and 
grab the values of  the <r> elements.

Is this because the DOM to DTM code creates a full replica of the 
Xerces DOM in DTM format before running the XPath selection on the 
document?

Thanks,
Toby
--
Tobias McNulty
Data Description, Inc.
840 Hanshaw Road, Suite 9
Ithaca, NY 14850
Phone: (607) 257-1000
E-mail: [EMAIL PROTECTED]
Web: www.datadesk.com