code: private void handleOperations(List<TableInfo> tableInfos)
      {
          SchemaOperationType operationType = SchemaOperationType.getInstance(operation);
  
          switch (operationType)
          {
          case createdrop:
              create_drop(tableInfos);
              break;
          case create:
              create(tableInfos);
              break;
          case update:
              update(tableInfos);
              break;
          case validate:
              validate(tableInfos);
              break;
          }
      }
docs: Handle operations.
  
  @param tableInfos
  the table infos