String name = ((Element) node).getAttribute("name");
String op_type = ((Element) node).getAttribute("optype");
String data_type = ((Element) node).getAttribute("dataType");
if (!containsKey(name)) {
DataField df = DataFieldFactory.getDataField(
pmml.getReader(), node, name, op_type, data_type);
put(name, df);
LOG.debug("PMML add DataField: " + df);
}
}