Java run by MySQL trigger

Question

I am trying to create some MySQL code that will invoke a Java program from a trigger.

Here is what I have so far:

CREATE TRIGGER trig_name after inse         


        

Answer 1

Calling a java method from an SQL database isn't a standard feature. The Informix DB can call a shell script from a stored procedure, but I don't know of a feature like this in MySQL (I'm not an expert on mysql).

The closest thing that works with all databases would be to have a thread and periodically poll the database for new records.

SELECT * FROM studentinfo WHERE id > last_seen_id

Or you could use a timestamp:

SELECT * FROM studentinfo WHERE create_date >= last_seen_create_date

In this case you would have to filter duplicated rows which have already loaded from the previous run.