code: public boolean isUseSecondryIndex()
      {
          // if lucene directory and indexer class both not present then return
          // true.
  
          return StringUtils.isEmpty(LuceneIndexDir) && StringUtils.isBlank(LuceneIndexDir)
                  && StringUtils.isEmpty(indexImplementor) && StringUtils.isBlank(indexImplementor);
      }
docs: Checks if is use secondry index.
  
  @return the useSecondryIndex