[ajug-members] To JDOM or to not JDOM...that is the question..

[David Chandler]

This is straightforward with XPath. The xpath query below returns all
elements at any level matching your_child_element_name. More advanced
expressions can be used to specify multiple element names, or you can
use //* and simply find matching names in the node loop using
node.getNodeName().

imports are from org.w3c and javax.xml.xpath

...
Element root = (Element) document.getDocumentElement();
nodeList = (NodeList) xpath.evaluate("//your_child_element_name",
root, XPathConstants.NODESET);
for (int i = 0; i < nodeList.getLength(); i++)
{
    Node node = nodeList.item(i);
    // Call methods on node to get name, value, cast as Element or
Attribute, etc.
}

/dmc

2008/11/14 Gary Marshall <gwjm56 at gmail.com>:
> All
> I have what I think is a typical data extraction task.  Given an input XML
> file, build another XML file containing smaller, more meaningful data
> elements.  I was told to use JDOM to complete this task and so far in my
> research I cannot find a way to do this using JDOM.  However, heres a
> disclaimer:  I'm a newbie at JDOM.
> So I have this very, very large XML file that contains lots and lots of what
> I'll call "parent" elements.  Each parent element has lots of child
> elements.  I need to capture the parent element and certain child elements
> (not all of the child elements) and build the output XML file.  Simple,
> right?  I need to navigate the entire XML file and for each parent element
> get certain child elements that belong to that parent.
> To JDOM or not to JDOM?  Can anybody point me in the direction where I can
> get an idea as to how to accomplish this task?
> Thanks much for your time.
> Gary
>
>
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