[jdom-interest] Important proposal: Element/Document changes

Jools Enticknap jools at jools.org
Thu Jul 27 15:07:54 PDT 2000

On Thu, 27 Jul 2000, Jason Hunter wrote:

> > I was under the impression that setRootElement() was going due to the
> > problems involved in making it behave ?
> Problems behaving?

The issue is how you do a document like this:

<!-- comment -->
<!-- comment -->

It's a whole lot easier with the above using addContent(Element) than
trying to make setRootElement() behave right.  If you
addContent(Element) and there's already an element, then we throw an


Which is what I was refering to.

> > So to summarize;
> > 
> > Do we need two methods for setting the Root element of a Document ?
> Well, which would you remove?

Fruedian slip there I think, I was not advocating the removal of either,
rather I wanted to clarify their use and see if we need two.

I personally think there is a need for them both(now that supprised you
did'nt it !) 

I would use the setContent(<type>) methods for creating the initial layout
of the Document, and if I needed to replace __just__ the root I could call
setRootElement() and I'd know that the Document would still be as I
intended it.

For instance;

Imagine that I want to have a Document which has copyright information
before and afer the root Element.

<!-- Copyright Nmemonix Ltd 2000 -->
<!-- Copyright Nmemonix Ltd 2000 -->

I could use the following method to make sure that all the documents were
written out with Copy right information as a header and tailer.

void dumpDocuments(Document doc, Vector elems) {

	Enumeration e = elems.elements();

	while(e.hasMoreElements()) {
		Element elem = (Element) e.nextElement();


But in order to create the Document in the first place I would want to
specify the order of the Comments and the place holder root Element by
using setContent() in the order in which I would want them to appear in
the Document.

	doc.setContent(new Element("root"));

So there might be a reason to have both.

Comments ?


> -jh-
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