Was it rude for Jesus to call his own mother 'woman'?

A friend who is studying theology asked me if it was rude of Jesus to call his own mother 'woman' when he was about to perform his first miracle at Cana of Galilee. *John 2:4* >“Woman, why do you involve me?” Jesus replied. “My hour has not yet come.” Why did Jesus call her 'woman' and not 'mother'?