/**
* Similar to the XMLRepresentation interface, this method will append an XML representation of
* some preferences to an existing node.
*
* @param prefs the preferences node to write out.
* @param deep - true to include a subtree with all child preferences nodes.
* @param domDoc the document in which the node will reside.
* @param node the node to which a child is applied.
*/
public static void toXML(
Preferences prefs, boolean deep, org.w3c.dom.Document domDoc, Element node, Map options)
throws IOException {
String[] keys;
String[] children;
Element childElement, entry;
String value;
int i;
// System.err.println( "node = "+prefs.name() );
try {
keys = prefs.keys();
childElement = (Element) node.appendChild(domDoc.createElement("map"));
for (i = 0; i < keys.length; i++) {
value = prefs.get(keys[i], null);
// System.err.println( " key = "+keys[i]+"; value = "+value );
if (value == null) continue;
entry = (Element) childElement.appendChild(domDoc.createElement("entry"));
entry.setAttribute("key", keys[i]);
entry.setAttribute("value", value);
}
if (deep) {
children = prefs.childrenNames();
for (i = 0; i < children.length; i++) {
childElement = (Element) node.appendChild(domDoc.createElement("node"));
childElement.setAttribute("name", children[i]);
toXML(prefs.node(children[i]), deep, domDoc, childElement, options);
}
}
} catch (DOMException e1) {
throw IOUtil.map(e1);
} catch (BackingStoreException e2) {
throw IOUtil.map(e2);
}
}
/**
* Similar to the XMLRepresentation interface, this method will parse an XML representation of
* some preferences and restore it's values.
*
* @param prefs the preferences node to import to.
* @param domDoc the document in which the node resides.
* @param rootElement the node whose children to parse.
*/
public static void fromXML(
Preferences prefs, org.w3c.dom.Document domDoc, Element rootElement, Map options)
throws IOException {
NodeList nl, nl2;
Element childElement, entry;
Node node;
int i, j;
try {
nl = rootElement.getChildNodes();
for (i = 0; i < nl.getLength(); i++) {
node = nl.item(i);
if (!(node instanceof Element)) continue;
childElement = (Element) node;
nl2 = childElement.getElementsByTagName("entry");
for (j = 0; j < nl2.getLength(); j++) {
entry = (Element) nl2.item(j);
prefs.put(entry.getAttribute("key"), entry.getAttribute("value"));
// System.err.println( "auto : node = "+(prefs.name() )+"; key = "+entry.getAttribute(
// "key" )+"; val = "+entry.getAttribute( "value" ) );
}
break;
}
for (; i < nl.getLength(); i++) {
node = nl.item(i);
if (!(node instanceof Element)) continue;
childElement = (Element) node;
fromXML(prefs.node(childElement.getAttribute("name")), domDoc, childElement, options);
}
} catch (DOMException e1) {
throw IOUtil.map(e1);
}
}
