[jdom-interest] Writing on a file stream element by element

[Joe Bowbeer]

FYI - Slightly updated and bug-fixed versions of XMLWriter and
XMLFilterBase have been included in the JDOM distribution since 2003.
See samples/sax.

On 10/4/07, Laurent Bihanic wrote:
> Hi,
>
>  > My problem, instead, is write the new element one by one, everytime that
>  > i create it.
>
> I don't think XMLOutputter will let you do that but you can combine
> SAXOuputter with Dave Megginson's XMLWriter/DataWriter
> (http://www.megginson.com/downloads/).
> Use the latter to output the outer document structure (root element) and the
> former to output your data (SAXOutputter.output(Element)).
>
> The twist is to insert an XMLFilter between these two to filter out the
> startDocument and endDocument events generated by each call to
> SAXOuputter.output(Element) that would cause a reset of XMLWriter.
>
> The filter is as simple as :
> public class MyFilter extends org.xml.sax.helpers.XMLFilterImpl
> {
>     public void startDocument() throws SAXException { }
>     public void endDocument() throws SAXException { }
> }
>
> And the code :
>
> MyFilter filter = new MyFilter();
> XMLWriter out = new XMLWriter(filter);
> SAXOuputter so = new SAXOuputter(filter);
>
> out.setOutput(...);
>
> out.startDocument();
> out.startElement("root");
>
> // loop to get JDOM elements
> {
>      so.output(e);
> }
> // end loop
>
> out.endElement("root");
> out.endDocument();
>
> Laurent
>
>
> NP wrote:
> > Hi.
> >
> > I have a document so:
> > mydoc = new Document();
> > a root element:
> > rootElement = new Element(....);
> > mydoc.setRootElement(rootElement);
> >
> > Now i create a new element:
> > Element myel = new Element(.....);
> >
> > addin' it to the root:
> > rootElement.addContent(myel);
> >
> > Now i must add the new information (myel) on a file. The code that i
> > wrote was:
> > XMLOutputter out = new XMLOutputter(....);
> > out.output(mydoc, new File(....));
> >
> > But in this way, everytime, i write the whole document in the file
> > (delete file and rewrite the updated document).
> > My problem, instead, is write the new element one by one, everytime that
> > i create it.
>