DefaultMXBeanMappingFactory.java 文件源码

@Override
final Object fromNonNullOpenValue(Object openValue)
        throws InvalidObjectException {
    final TabularData table = (TabularData) openValue;
    final Collection<CompositeData> rows = cast(table.values());
    final Map<Object, Object> valueMap =
        sortedMap ? newSortedMap() : newInsertionOrderMap();
    for (CompositeData row : rows) {
        final Object key =
            keyMapping.fromOpenValue(row.get("key"));
        final Object value =
            valueMapping.fromOpenValue(row.get("value"));
        if (valueMap.put(key, value) != null) {
            final String msg =
                "Duplicate entry in TabularData: key=" + key;
            throw new InvalidObjectException(msg);
        }
    }
    return valueMap;
}