Examples of errors detected by the V6002 diagnostic

V6002. The switch statement does not cover all values of the enum.

CUBA Platform

V6002 The switch statement does not cover all values of the 'Operation' enum: ADD. DesktopAbstractTable.java(665)

/**
 * Operation which caused the datasource change.
 */
enum Operation {
    REFRESH,
    CLEAR,
    ADD,
    REMOVE,
    UPDATE
}

@Override
public void setDatasource(final CollectionDatasource datasource) {
  ....
  collectionChangeListener = e -> {
    switch (e.getOperation()) {
      case CLEAR:
      case REFRESH:
        fieldDatasources.clear();
        break;

      case UPDATE:
      case REMOVE:
        for (Object entity : e.getItems()) {
          fieldDatasources.remove(entity);
        }
        break;
    }
  };
  ....
}