Spring Security - Third Edition

Updating the JBCP calendar to use Spring Data JPA

To get familiar with Spring Data, we will first convert the JBCP calendar SQL to leverage ORM, using the Spring Data JPA starter.

Creating and maintaining SQL can be quite tedious. In the previous chapters, when we wanted to create a new CalendarUser table in the database, we had to create a fair amount of boilerplate code, as follows:

    //src/main/java/com/packtpub/springsecurity/    dataaccess/JdbcCalendarUserDao.java    public int createUser(final CalendarUser userToAdd) {    if (userToAdd == null) {         throw new IllegalArgumentException("userToAdd cannot be null");    }    if (userToAdd.getId() != null) {         throw new IllegalArgumentException("userToAdd.getId() must be          null when creating a  "+CalendarUser.class.getName()); ...