To provide machine-readeble SQLIntegrityConstraintViolationException. Required schema name, table name, constraint name.

if (

            ex instanceof PSQLException pex &&

            ex.getSQLState().startsWith("23")

) {

            return new ConstraintViolationException(

                null,

                pex.getServerErrorMessage().getSchema(),     // <----

                pex.getServerErrorMessage().getTable(),       // <----

                pex.getServerErrorMessage().getConstraint()  // <----

            );

}