public static MetadataUpdate fromJson()

in core/src/main/java/org/apache/iceberg/MetadataUpdateParser.java [295:359]
64 lines of code
27 McCabe index (conditional complexity)

  public static MetadataUpdate fromJson(JsonNode jsonNode) {
    Preconditions.checkArgument(
        jsonNode != null && jsonNode.isObject(),
        "Cannot parse metadata update from non-object value: %s",
        jsonNode);
    Preconditions.checkArgument(
        jsonNode.hasNonNull(ACTION), "Cannot parse metadata update. Missing field: action");
    String action = JsonUtil.getString(ACTION, jsonNode).toLowerCase(Locale.ROOT);

    switch (action) {
      case ASSIGN_UUID:
        return readAssignUUID(jsonNode);
      case UPGRADE_FORMAT_VERSION:
        return readUpgradeFormatVersion(jsonNode);
      case ADD_SCHEMA:
        return readAddSchema(jsonNode);
      case SET_CURRENT_SCHEMA:
        return readSetCurrentSchema(jsonNode);
      case ADD_PARTITION_SPEC:
        return readAddPartitionSpec(jsonNode);
      case SET_DEFAULT_PARTITION_SPEC:
        return readSetDefaultPartitionSpec(jsonNode);
      case ADD_SORT_ORDER:
        return readAddSortOrder(jsonNode);
      case SET_DEFAULT_SORT_ORDER:
        return readSetDefaultSortOrder(jsonNode);
      case SET_STATISTICS:
        return readSetStatistics(jsonNode);
      case REMOVE_STATISTICS:
        return readRemoveStatistics(jsonNode);
      case SET_PARTITION_STATISTICS:
        return readSetPartitionStatistics(jsonNode);
      case REMOVE_PARTITION_STATISTICS:
        return readRemovePartitionStatistics(jsonNode);
      case ADD_SNAPSHOT:
        return readAddSnapshot(jsonNode);
      case REMOVE_SNAPSHOTS:
        return readRemoveSnapshots(jsonNode);
      case REMOVE_SNAPSHOT_REF:
        return readRemoveSnapshotRef(jsonNode);
      case SET_SNAPSHOT_REF:
        return readSetSnapshotRef(jsonNode);
      case SET_PROPERTIES:
        return readSetProperties(jsonNode);
      case REMOVE_PROPERTIES:
        return readRemoveProperties(jsonNode);
      case SET_LOCATION:
        return readSetLocation(jsonNode);
      case ADD_VIEW_VERSION:
        return readAddViewVersion(jsonNode);
      case SET_CURRENT_VIEW_VERSION:
        return readCurrentViewVersionId(jsonNode);
      case REMOVE_PARTITION_SPECS:
        return readRemovePartitionSpecs(jsonNode);
      case REMOVE_SCHEMAS:
        return readRemoveSchemas(jsonNode);
      case ADD_ENCRYPTION_KEY:
        return readAddEncryptionKey(jsonNode);
      case REMOVE_ENCRYPTION_KEY:
        return readRemoveEncryptionKey(jsonNode);
      default:
        throw new UnsupportedOperationException(
            String.format("Cannot convert metadata update action to json: %s", action));
    }
  }