コード例 #1
0
  @Override
  public EnumMap<?, ?> deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
    // Ok: must point to START_OBJECT
    if (jp.getCurrentToken() != JsonToken.START_OBJECT) {
      return _deserializeFromEmpty(jp, ctxt);
    }
    EnumMap result = constructMap();
    final JsonDeserializer<Object> valueDes = _valueDeserializer;
    final TypeDeserializer typeDeser = _valueTypeDeserializer;

    while ((jp.nextToken()) == JsonToken.FIELD_NAME) {
      String keyName = jp.getCurrentName(); // just for error message
      // but we need to let key deserializer handle it separately, nonetheless
      Enum<?> key = (Enum<?>) _keyDeserializer.deserializeKey(keyName, ctxt);
      if (key == null) {
        if (!ctxt.isEnabled(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL)) {
          throw ctxt.weirdStringException(
              keyName,
              _enumClass,
              "value not one of declared Enum instance names for " + _mapType.getKeyType());
        }
        /* 24-Mar-2012, tatu: Null won't work as a key anyway, so let's
         *  just skip the entry then. But we must skip the value as well, if so.
         */
        jp.nextToken();
        jp.skipChildren();
        continue;
      }
      // And then the value...
      JsonToken t = jp.nextToken();
      /* note: MUST check for nulls separately: deserializers will
       * not handle them (and maybe fail or return bogus data)
       */
      Object value;

      try {
        if (t == JsonToken.VALUE_NULL) {
          value = valueDes.getNullValue(ctxt);
        } else if (typeDeser == null) {
          value = valueDes.deserialize(jp, ctxt);
        } else {
          value = valueDes.deserializeWithType(jp, ctxt, typeDeser);
        }
      } catch (Exception e) {
        wrapAndThrow(e, result, keyName);
        return null;
      }
      result.put(key, value);
    }
    return result;
  }