@Override
    public int compareTo(final LocalTransactionId o) {
        int result = this.sessionId.compareTo(o.sessionId);
        if (result == 0) {
            result = (int) (this.value - o.value);
        }
        return result;
    }
@param o
@return
@see java.lang.Comparable#compareTo(java.lang.Object)
metamorphosis-commons/src/main/java/com/taobao/metamorphosis/transaction/LocalTransactionId.java