PyramusService.java

package fi.pyramus.services;

import java.util.Set;

import javax.persistence.PersistenceException;
import javax.validation.ConstraintViolation;

import fi.otavanopisto.pyramus.dao.DAOFactory;
import fi.otavanopisto.pyramus.dao.SystemDAO;

public class PyramusService {

  protected void validateEntity(Object entity) {
  	SystemDAO systemDAO = DAOFactory.getInstance().getSystemDAO(); 
  	  
  	Set<ConstraintViolation<Object>> constraintViolations = systemDAO.validateEntity(entity);
  	if (!constraintViolations.isEmpty()) {
  	  String message = "";
  	  for (ConstraintViolation<Object> constraintViolation : constraintViolations) {
  	    message += constraintViolation.getMessage() + '\n';
  	  }  	
  		
  	  throw new PersistenceException(message);
  	}
  }
  
}