For each statement trigger and update table

Not sure if this is possible
Basically I want to have a trigger which updates an array column in the
same table when a column is updated
This works as a row level trigger, but not as per statement
I have hit the recursive issue (where update fires update trigger which
fires etc)
According to the docs I cannot use columns and relative tables together

So any suggestions? I can give code when I get home, but it's pretty simple
stuff