How to catch PSQLException value too long for type character varying - spring

Question

I'm currently testing the data access layer that I've created in spring (PersistenceContext is injected). So I have a stateless EJB that calls a service for example UserService, that inserts/delete/update data in the database.
The service works fine, I was able to insert database. But when I was testing and I input string value that is longer than the set length I got:
javax.transaction.RollbackException: Transaction marked for rollback.
WARNING: DTX5014: Caught exception in beforeCompletion() callback:
javax.persistence.PersistenceException: org.hibernate.exception.DataException: ERROR: value too long for type character varying(20)
Caused by: org.hibernate.exception.DataException: ERROR: value too long for type character varying(20)
Caused by: org.hibernate.exception.DataException: ERROR: value too long for type character varying(20)
My partial code:
#PersistenceContext
protected EntityManager entityManager;
try {
entityManager.persist(e);
} catch(Exception e) {
//log message here
}
Then I've tried everything to catch these errors but I was not able to. Any suggestion on how to resolve the issue?
Thanks,
czetsuya

Answer 1

I've used the following code to find out which error is thrown under your circumstances:
BEGIN;
CREATE TABLE t(v varchar(5));
DO $body$
BEGIN
INSERT INTO t VALUES ('1234567');
EXCEPTION WHEN OTHERS THEN
RAISE NOTICE '!!! %, %', SQLSTATE, SQLERRM;
END;$body$;
ROLLBACK;
You'll see, that error code is 22001, error is named string_data_right_truncation per PostrgeSQL's list of error codes.
I don't know how to catch this error in the Hibernate, but on the PL/pgSQL level you can do it using:
EXCEPTION WHEN SQLSTATE '22001' THEN
-- your code follows
END;
I hope this will help you.