In Criteria API, the javax.persistence.criteria.CriteriaUpdate interface defines functionality for performing bulk update operations.

Following method of CriteriaBuilder can be used to obtain CriteriaUpdate instance.

CriteriaUpdate<T> createCriteriaUpdate(Class<T> targetEntity)

Following is the CriteriaUpdate snippet:

public interface CriteriaUpdate<T> extends CommonAbstractCriteria {
   Root<T> from(Class<T> entityClass);
   Root<T> from(EntityType<T> entity);
   Root<T> getRoot();
   //Update the value of the specified attribute.   
   <Y, X extends Y> CriteriaUpdate<T> set( SingularAttribute<? super T, Y> attribute, X value);
   <Y> CriteriaUpdate<T> set( SingularAttribute<? super T, Y> attribute, Expression<? extends Y> value);
   <Y, X extends Y> CriteriaUpdate<T> set(Path<Y> attribute, X value);
   <Y> CriteriaUpdate<T> set(Path<Y> attribute, Expression<? extends Y> value);
   CriteriaUpdate<T> set(String attributeName, Object value);
   CriteriaUpdate<T> where(Expression<Boolean> restriction);
   CriteriaUpdate<T> where(Predicate... restrictions);
}

Quick Example

    .................. 
    CriteriaUpdate<Employee> criteriaUpdate = criteriaBuilder.createCriteriaUpdate(Employee.class);
    Root<Employee> employeeRoot = criteriaUpdate.from(Employee.class);
    criteriaUpdate.set(employeeRoot.get(Employee_.salary),
            criteriaBuilder.sum(employeeRoot.get(Employee_.salary), 500d))
                  .where(criteriaBuilder.equal(employeeRoot.get(Employee_.DEPT), "IT"));
    //the equivalent JPQL
    //UPDATE Employee e SET e.salary = e.salary + 500 WHERE e.dept = 'IT'
    entityManager.getTransaction().begin();
    int i = entityManager.createQuery(criteriaUpdate).executeUpdate();
    System.out.println("Entities updated: " + i);
    entityManager.getTransaction().commit();
    ..................

Complete Example

JPA Entity

@Entity
public class Employee {
    @Id
    @GeneratedValue
    private long id;
    private String name;
    private double salary;
    private String dept;
    .............
}

Using CriteriaUpdate

public class ExampleMain {
    private static EntityManagerFactory entityManagerFactory =
            Persistence.createEntityManagerFactory("example-unit");

    public static void main(String[] args) {
        try {
            persistEmployees();
            findAllEmployees();
            updateITEmployeesSalaries();
            findAllEmployees();
            updateAllEmployeesSalaries();
            findAllEmployees();
        } finally {
            entityManagerFactory.close();
        }
    }

    private static void updateITEmployeesSalaries() {
        System.out.println("-- increasing IT employees salaries by 500 --");
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaUpdate<Employee> criteriaUpdate = criteriaBuilder.createCriteriaUpdate(Employee.class);
        Root<Employee> employeeRoot = criteriaUpdate.from(Employee.class);
        criteriaUpdate.set(employeeRoot.get(Employee_.salary),
                criteriaBuilder.sum(employeeRoot.get(Employee_.salary), 500d))
                      .where(criteriaBuilder.equal(employeeRoot.get(Employee_.DEPT), "IT"));
        //the equivalent JPQL
        //UPDATE Employee e SET e.salary = e.salary + 500 WHERE e.dept = 'IT'
        entityManager.getTransaction().begin();
        int i = entityManager.createQuery(criteriaUpdate).executeUpdate();
        System.out.println("Entities updated: " + i);
        entityManager.getTransaction().commit();
        entityManager.close();
    }

    private static void updateAllEmployeesSalaries() {
        System.out.println("-- increasing all employees salaries by different percentage --");
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaUpdate<Employee> criteriaUpdate = criteriaBuilder.createCriteriaUpdate(Employee.class);
        Root<Employee> root = criteriaUpdate.from(Employee.class);

        CriteriaBuilder.SimpleCase<String, Double> deptCase =
                criteriaBuilder.selectCase(root.get(Employee_.DEPT));
        Expression<Double> caseExpression =
                deptCase.when("IT", criteriaBuilder.prod(root.get(Employee_.SALARY), 1.20))
                        .when("Admin", criteriaBuilder.prod(root.get(Employee_.SALARY), 1.15))
                        .otherwise(criteriaBuilder
                                .prod(root.get(Employee_.SALARY), 1.12));
        criteriaUpdate.set(root.get(Employee_.salary), caseExpression);
        //the equivalent JPQL
        /*UPDATE Employee e SET e.salary =
                 CASE
                  WHEN e.dept = 'IT' THEN (e.salary * 1.20)
                  WHEN e.dept = 'Admin' THEN (e.salary * 1.15)
                  ELSE (e.salary * 1.12)
                  END*/

        entityManager.getTransaction().begin();
        int rowsUpdated = entityManager.createQuery(criteriaUpdate).executeUpdate();
        System.out.println("entities Updated: " + rowsUpdated);
        entityManager.getTransaction().commit();
        entityManager.close();
    }

    public static void persistEmployees() {
        Employee employee1 = Employee.create("Diana", 2000, "IT");
        Employee employee2 = Employee.create("Rose", 3500, "Admin");
        Employee employee3 = Employee.create("Denise", 2500, "Admin");
        Employee employee4 = Employee.create("Mike", 4000, "IT");
        Employee employee5 = Employee.create("Linda", 4500, "Sales");
        EntityManager em = entityManagerFactory.createEntityManager();
        em.getTransaction().begin();
        em.persist(employee1);
        em.persist(employee2);
        em.persist(employee3);
        em.persist(employee4);
        em.persist(employee5);
        em.getTransaction().commit();
        em.close();
    }

    private static void findAllEmployees() {
        EntityManager em = entityManagerFactory.createEntityManager();
        System.out.println("-- All employees --");
        Query query = em.createQuery(
                "SELECT e FROM Employee e");
        List<Employee> resultList = query.getResultList();
        resultList.forEach(System.out::println);
        em.close();
    }
}

-- All employees --
Employee{id=1, name='Diana', salary=2000.0, dept='IT'}
Employee{id=2, name='Rose', salary=3500.0, dept='Admin'}
Employee{id=3, name='Denise', salary=2500.0, dept='Admin'}
Employee{id=4, name='Mike', salary=4000.0, dept='IT'}
Employee{id=5, name='Linda', salary=4500.0, dept='Sales'}
-- increasing IT employees salaries by 500 --
Entities updated: 2
-- All employees --
Employee{id=1, name='Diana', salary=2500.0, dept='IT'}
Employee{id=2, name='Rose', salary=3500.0, dept='Admin'}
Employee{id=3, name='Denise', salary=2500.0, dept='Admin'}
Employee{id=4, name='Mike', salary=4500.0, dept='IT'}
Employee{id=5, name='Linda', salary=4500.0, dept='Sales'}
-- increasing all employees salaries by different percentage --
entities Updated: 5
-- All employees --
Employee{id=1, name='Diana', salary=3000.0, dept='IT'}
Employee{id=2, name='Rose', salary=4024.9999999999995, dept='Admin'}
Employee{id=3, name='Denise', salary=2875.0, dept='Admin'}
Employee{id=4, name='Mike', salary=5400.0, dept='IT'}
Employee{id=5, name='Linda', salary=5040.000000000001, dept='Sales'}

Example Project

Dependencies and Technologies Used:

• h2 1.4.199: H2 Database Engine.
• hibernate-core 5.4.2.Final: Hibernate's core ORM functionality.
  Implements javax.persistence:javax.persistence-api version 2.2
• hibernate-jpamodelgen 5.4.2.Final: Annotation Processor to generate JPA 2 static metamodel classes.
• JDK 1.8
• Maven 3.5.4