/**
* This will invoke the <code>endPrefixMapping</code> callback in the <code>ContentHandler</code>
* when a namespace is goes out of scope in the <code>Document</code>.
*
* @param namespaces <code>List</code> stack of Namespaces in scope.
* @param previouslyDeclaredNamespaces number of previously declared namespaces
*/
private void endPrefixMapping(NamespaceStack namespaces, int previouslyDeclaredNamespaces)
throws JDOMException {
while (namespaces.size() > previouslyDeclaredNamespaces) {
String prefix = namespaces.pop();
try {
contentHandler.endPrefixMapping(prefix);
} catch (SAXException se) {
throw new JDOMException("Exception in endPrefixMapping", se);
}
}
}
/**
* This will invoke the <code>ContentHandler.startPrefixMapping</code> callback when a new
* namespace is encountered in the <code>Document</code>.
*
* @param element <code>Element</code> used in callbacks.
* @param namespaces <code>List</code> stack of Namespaces in scope.
* @return <code>Attributes</code> declaring the namespaces local to <code>element</code> or
* <code>null</code>.
*/
private Attributes startPrefixMapping(Element element, NamespaceStack namespaces)
throws JDOMException {
AttributesImpl nsAtts = null; // The namespaces as xmlns attributes
Namespace ns = element.getNamespace();
if (ns != Namespace.XML_NAMESPACE) {
String prefix = ns.getPrefix();
String uri = namespaces.getURI(prefix);
if (!ns.getURI().equals(uri)) {
namespaces.push(ns);
nsAtts = this.addNsAttribute(nsAtts, ns);
try {
contentHandler.startPrefixMapping(prefix, ns.getURI());
} catch (SAXException se) {
throw new JDOMException("Exception in startPrefixMapping", se);
}
}
}
// Fire additional namespace declarations
List additionalNamespaces = element.getAdditionalNamespaces();
if (additionalNamespaces != null) {
Iterator itr = additionalNamespaces.iterator();
while (itr.hasNext()) {
ns = (Namespace) itr.next();
String prefix = ns.getPrefix();
String uri = namespaces.getURI(prefix);
if (!ns.getURI().equals(uri)) {
namespaces.push(ns);
nsAtts = this.addNsAttribute(nsAtts, ns);
try {
contentHandler.startPrefixMapping(prefix, ns.getURI());
} catch (SAXException se) {
throw new JDOMException("Exception in startPrefixMapping", se);
}
}
}
}
return nsAtts;
}
/**
* This will recursively invoke all of the callbacks for a particular element.
*
* @param element <code>Element</code> used in callbacks.
* @param namespaces <code>List</code> stack of Namespaces in scope.
*/
private void element(Element element, NamespaceStack namespaces) throws JDOMException {
// used to check endPrefixMapping
int previouslyDeclaredNamespaces = namespaces.size();
// contentHandler.startPrefixMapping()
Attributes nsAtts = startPrefixMapping(element, namespaces);
// contentHandler.startElement()
startElement(element, nsAtts);
// handle content in the element
elementContent(element.getContent(), namespaces);
// update locator
locator.setNode(element);
// contentHandler.endElement()
endElement(element);
// contentHandler.endPrefixMapping()
endPrefixMapping(namespaces, previouslyDeclaredNamespaces);
}
