Method setMinId

ZezeJava/ZezeJava/src/main/java/Zeze/Component/AutoKey.java:124–144

设置最小的ID值, 使下次nextId()的结果不小于此值

(long minId)

	 * 设置最小的ID值, 使下次nextId()的结果不小于此值
	 */
	public boolean setMinId(long minId) {
		int serverId = module.zeze.getConfig().getServerId();
		if (serverId < 0) // serverId不应该<0,因为会导致nextId返回负值
			throw new IllegalStateException("AutoKey.setMinId: serverId(" + serverId + ") < 0");
		if (serverId == 0)
			return setSeed(minId); // WriteULong(minId)再ToLongBE得到的值一定不小于minId,其实还能再选出符合条件的更小seed值,但serverId极少=0,所以不考虑那么多了
		var bb = ByteBuffer.Allocate(8);
		bb.WriteUInt(serverId);
		bb.WriteULong(0);
		long id = ByteBuffer.ToLongBE(bb.Bytes, 0, bb.WriteIndex);
		long seed = 0;
		while (id < minId) {
			if ((id & 0xff80_0000_0000_0000L) != 0) {
				throw new IllegalStateException("AutoKey.setMinId: minId(" + minId
						+ ") is too large for serverId(" + serverId + ')');
			}
			id <<= 8;
			seed = seed == 0 ? 0x80 : seed << 7; // 每多7位,WriteULong序列化就要多1字节
		}
		return setSeed(seed);
	}

	/**
	 * 设置当前serverId的种子，新种子必须比当前值大。