public static String format(Event event, String pattern) {
AdvancedMessageFormat format = new AdvancedMessageFormat(pattern);
Map params = new java.util.HashMap(event.getParams());
params.put("source", event.getSource());
params.put("severity", event.getSeverity());
return format.format(params);
}
private static class LookupFieldPart implements Part {
private String fieldName;