MapWritableConverter.java 文件源码

private static Map<String, Map<String,String>> convertToMap(MapWritable inputMap) {
    Map<String, Map<String,String>> mapResult = Maps.newHashMap();

    for (Writable attributeText : inputMap.keySet()) {
        MapWritable partialInsideMap = (MapWritable) inputMap.get(attributeText);
        Map<String,String> partialOutputMap = Maps.newHashMap();

        for (Writable rule : partialInsideMap.keySet()) {
            Text regola = (Text) rule;
            Text valore = (Text) partialInsideMap.get(rule);

            partialOutputMap.put(regola.toString(), valore.toString());
        }

        mapResult.put(((Text)attributeText).toString(), partialOutputMap);
    }

    return mapResult;
}