Lost in XPath

[Tom Clement]

I really believe it's possible to do what I want with a SelectNodes() XPath
query, but I'm lost. Any help would be appreciated. Suppose you have an
XML document (like a WordProcessingML file) that has a bunch of elements
embedded in it that conform to a schema, but each schema-defined
parent/child relationship can have (an arbitrary number of) intervening
elements from another namespace. I'm trying to do something simple, find
all "children" (considering only my namespace) of a particular node. For
example suppose you have something like:

<w:wordDocument xmlns:w="http://theirs" xmlns:ns1="http://mine" >
....
<w:body>
<wx:sect>
<ns1:ReportData>
<w:pPr>
<w:jc w:val="center" />
</w:pPr>
<w:p />
<ns1:Solution>
<w:p />
<ns1:Requirements/>
<w:p />
</ns1:Solution>
<w:p />
<ns1:Path/>
</ns1:ReportData>
</wx:sect>
</w:body>
</w:wordDocument>

Suppose I have an XmlElement corresponding to the <ns1:ReportData> element.
I know I can get all ns1: descendants using SelectNodes("//ns1:*", ...).
But how in the world can I qualify this so that I only get the "child" (sort
of) descendants (within my namespace) which are <ns1:Solution> and
<ns1:Path> but not nodes that are under one of those, like
<ns1:Requirements>.

Thanks for your help with this puzzler.
Tom Clement
Apptero, Inc.

[Dare Obasanjo [MSFT]]

What you are trying to do is sometimes called subtree pruning or filtering
and is beyond the capabilities of XPath. I'd suggest using XSLT to solve
this problem.

--
This posting is provided "AS IS" with no warranties, and confers no rights.

"Tom Clement" <to*@ElideThisApptero.com> wrote in message
news:eQ**************@tk2msftngp13.phx.gbl...

I really believe it's possible to do what I want with a SelectNodes() XPath query, but I'm lost. Any help would be appreciated. Suppose you have an
XML document (like a WordProcessingML file) that has a bunch of elements
embedded in it that conform to a schema, but each schema-defined
parent/child relationship can have (an arbitrary number of) intervening
elements from another namespace. I'm trying to do something simple, find
all "children" (considering only my namespace) of a particular node. For
example suppose you have something like:

<w:wordDocument xmlns:w="http://theirs" xmlns:ns1="http://mine" >
...
<w:body>
<wx:sect>
<ns1:ReportData>
<w:pPr>
<w:jc w:val="center" />
</w:pPr>
<w:p />
<ns1:Solution>
<w:p />
<ns1:Requirements/>
<w:p />
</ns1:Solution>
<w:p />
<ns1:Path/>
</ns1:ReportData>
</wx:sect>
</w:body>
</w:wordDocument>

Suppose I have an XmlElement corresponding to the <ns1:ReportData> element. I know I can get all ns1: descendants using SelectNodes("//ns1:*", ...).
But how in the world can I qualify this so that I only get the "child" (sort of) descendants (within my namespace) which are <ns1:Solution> and
<ns1:Path> but not nodes that are under one of those, like
<ns1:Requirements>.

Thanks for your help with this puzzler.
Tom Clement
Apptero, Inc.

[Tom Clement]

Dare,
Thank you for your response. I think I got a bit carried away with trying
to do it all in XPath since I actually have C# to work with. FYI, I just
wrote a function that served my narrow purposes.

private void GetChildElementsFromNamespace(XmlNode node, ArrayList tagNodes,
string ns)
{
foreach(XmlNode child in node.ChildNodes)
{
XmlElement elChild = child as XmlElement;
if( elChild != null ) // Do nothing with attributes etc.
{
if( elChild.NamespaceURI == ns )
tagNodes.Add(elChild);
else // Only recurse if this isn't in our namespace
GetChildElementsFromNamespace(elChild, tagNodes, ns);
}
}
}

Tom

"Dare Obasanjo [MSFT]" <da***@online.microsoft.com> wrote in message
news:40********@news.microsoft.com...

What you are trying to do is sometimes called subtree pruning or filtering
and is beyond the capabilities of XPath. I'd suggest using XSLT to solve
this problem.

--
This posting is provided "AS IS" with no warranties, and confers no rights.
"Tom Clement" <to*@ElideThisApptero.com> wrote in message
news:eQ**************@tk2msftngp13.phx.gbl...

I really believe it's possible to do what I want with a SelectNodes()

XPath

query, but I'm lost. Any help would be appreciated. Suppose you have an XML document (like a WordProcessingML file) that has a bunch of elements
embedded in it that conform to a schema, but each schema-defined
parent/child relationship can have (an arbitrary number of) intervening
elements from another namespace. I'm trying to do something simple, find all "children" (considering only my namespace) of a particular node. For example suppose you have something like:

<w:wordDocument xmlns:w="http://theirs" xmlns:ns1="http://mine" >
...
<w:body>
<wx:sect>
<ns1:ReportData>
<w:pPr>
<w:jc w:val="center" />
</w:pPr>
<w:p />
<ns1:Solution>
<w:p />
<ns1:Requirements/>
<w:p />
</ns1:Solution>
<w:p />
<ns1:Path/>
</ns1:ReportData>
</wx:sect>
</w:body>
</w:wordDocument>

Suppose I have an XmlElement corresponding to the <ns1:ReportData>

element.

I know I can get all ns1: descendants using SelectNodes("//ns1:*", ...).
But how in the world can I qualify this so that I only get the "child"

(sort

of) descendants (within my namespace) which are <ns1:Solution> and
<ns1:Path> but not nodes that are under one of those, like
<ns1:Requirements>.

Thanks for your help with this puzzler.
Tom Clement
Apptero, Inc.