IdentityGeneratorListener.java 文件源码

/**
 * Generates a new identity for the given {@link Entity}.
 * @param entity Entity
 */
@PrePersist
public void generate(Entity<Long, ?> entity) {
  if (!entity.isNew()) {
    return;
  }
  long id = IdentityGenerator.generate();
  entity.setId(id);
  LOGGER.debug("Generated ID {} for {}.", id, entity.getClass());
}