Iterator result = provider.lookupPreference("userinfo", "user.email", "napolean@dynamite.xxx").iterator();
int count = 0;
while (result.hasNext())
{
Node node = (Node) result.next();
System.out.println("node = " + node.getFullPath());
Iterator props = node.getNodeProperties().iterator();
while (props.hasNext())
{
Property prop = (Property) props.next();
String name = prop.getPropertyName();
String value = prop.getPropertyValue();