Method mergeRank

ZezeJava/ZezeJava/src/main/java/Zeze/Game/Rank.java:440–471

直接合并hash分组，不适用缓存。 @param keyHintFrom from @param keyHintTo to

(BConcurrentKey keyHintFrom, BConcurrentKey keyHintTo)

	 * @param keyHintTo   to
	 */
	public void mergeRank(BConcurrentKey keyHintFrom, BConcurrentKey keyHintTo) {
		if (keyHintFrom.getRankType() != keyHintTo.getRankType()
				|| keyHintFrom.getTimeType() != keyHintTo.getTimeType()
				|| keyHintFrom.getYear() != keyHintTo.getYear())
			throw new RuntimeException("rank type mismatch.");

		if (keyHintFrom.getOffset() == keyHintTo.getOffset())// same hint
			return;

		int concurrentLevel = getConcurrentLevel(keyHintFrom.getRankType());
		int countNeed = getComputeCount(keyHintFrom.getRankType());
		for (int i = 0; i < concurrentLevel; ++i) {
			var concurrentKeyFrom = new BConcurrentKey(keyHintFrom.getRankType(), i, keyHintFrom.getTimeType(),
					keyHintFrom.getYear(), keyHintFrom.getOffset());
			var concurrentKeyTo = new BConcurrentKey(keyHintTo.getRankType(), i, keyHintTo.getTimeType(),
					keyHintTo.getYear(), keyHintTo.getOffset());
			var from = _trank.getOrAdd(concurrentKeyFrom);
			// 把from里面的所有玩家从目标列表中清除。
			for (var j = 0; j < from.getRankList().size(); ++j)
				_removeRank(i, keyHintTo, from.getRankList().get(j).getRoleId(), null);
			// 合并到目标列表中。
			var merged = merge(_trank.getOrAdd(concurrentKeyTo), from);
			// 删除多余的数量。
			if (merged.getRankList().size() > countNeed) { // 再次删除多余的结果。
				//noinspection ListRemoveInLoop
				for (int ir = merged.getRankList().size() - 1; ir >= countNeed; --ir)
					merged.getRankList().remove(ir);
			}
			// 保存列表。
			_trank.put(concurrentKeyTo, merged);
		}
	}

	/**
	 * 直接查询数据库并合并分组数据。直接查询没有使用缓存。