public Set<Operation> getOperationsByQueryTag(String queryTag) {
    Set<String> queryIds = queryTagToIdMap.get(queryTag);
    Set<Operation> result = new HashSet<Operation>();
    for (String queryId : queryIds) {
      if (queryId != null && getOperationByQueryId(queryId) != null) {
        result.add(getOperationByQueryId(queryId));
      }
    }
    return result;
  }
@param handle handle of SQLOperation.
@return display representing a particular SQLOperation.
service/src/java/org/apache/hive/service/cli/operation/OperationManager.java