public void jFlush(int index) {
		if (index < tail) {
			for (int i = index++; i < tail; i++)
				tuples[i] = null;
		} else {
			for (int i = index++; i < tuples.length; i++)
				tuples[i] = null;
			for (int j = 0; j < tail; j++)
				tuples[j] = null;
		}

	}