@Override public void fireOnSqlChange(String sql, List<Object> args) { JsArrayMixed jarg = (JsArrayMixed) JavaScriptObject.createArray(); for (Object o : args) { if (o == null) { jarg.push((JavaScriptObject) null); } else if (o instanceof String) { jarg.push((String) o); } else if (o instanceof Date) { jarg.push(JsDate.create(((Date) o).getTime())); } else { throw new IllegalArgumentException("Don't know how to handle " + o); } } config.fireOnSqlChange(sql, jarg); }