/**
  * @param itemList
  * @param period
  * @param request
  * @return
  * @throws EnMeSearchException
  */
 private List<HashTagDetailStats> compareList(
     final List<ItemStatDetail> itemList,
     final SearchPeriods period,
     final HttpServletRequest request)
     throws EnMeSearchException {
   Integer month = 0;
   Integer monthB;
   String rangeSubLabel = null;
   boolean existItemStatDetailLabel = false;
   List<HashTagDetailStats> tagDetailStatsCompare = new ArrayList<HashTagDetailStats>();
   // FIXME: It's limited only for dates in the same year, upgrade to accept dates for different
   // year.
   for (int i = 0; i < itemList.size(); i++) {
     Long countItems = 0L;
     monthB = this.getLabelDateValue(period, itemList.get(i).getDate());
     for (int j = 0; j < itemList.size(); j++) {
       month = this.getLabelDateValue(period, itemList.get(j).getDate());
       if (monthB == month) {
         countItems++;
       }
     }
     // check if the label exist previously
     existItemStatDetailLabel =
         checkLabelExistsHashTagDetailStat(tagDetailStatsCompare, monthB.toString());
     if (!existItemStatDetailLabel) {
       rangeSubLabel = this.getHashTagStatsDataRangeLabel(period.toString(), monthB, request);
       tagDetailStatsCompare.add(
           this.createTagDetailsStats(monthB.toString(), countItems, rangeSubLabel));
     }
   }
   return tagDetailStatsCompare;
 }
  /**
   * Return total votes by tweetpoll filtered by hashtag.
   *
   * @param tagName
   * @param period
   * @return
   */
  private Long retrieveTweetPollTotalVotesByHashTag(
      final String tagName, final SearchPeriods period) {
    Long totalTweetPollVotes = 0L;
    // 1- Retrieve a tweetpoll list filtered by hashtag and specific period
    final List<TweetPoll> tweetPolls =
        this.getTweetPollsByHashTag(tagName, null, null, TypeSearchResult.HASHTAG, period);

    log.debug(
        "TweetPolls by HashTag ****************************************** "
            + tweetPolls.size()
            + "Period ***********************"
            + period.toString());
    // 2-  Iterate tweetpoll list and sum of votes for each tweetpoll
    for (TweetPoll tweetPoll : tweetPolls) {
      final Long votesByTweetPoll =
          getTweetPollDao().getTotalVotesByTweetPollId(tweetPoll.getTweetPollId());

      totalTweetPollVotes = totalTweetPollVotes + votesByTweetPoll.intValue();
    }
    log.debug(
        "Total Votes by Tweetpoll ******************************************"
            + totalTweetPollVotes);
    return totalTweetPollVotes;
  }