Package javax.persistence.criteria

Examples of javax.persistence.criteria.CriteriaBuilder$SimpleCase

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    public Member findById(Long id) {
        return em.find(Member.class, id);
    }

    public Member findByEmail(String email) {
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaQuery<Member> criteria = cb.createQuery(Member.class);
        Root<Member> member = criteria.from(Member.class);
        // Swap criteria statements if you would like to try out type-safe criteria queries, a new
        // feature in JPA 2.0
        // criteria.select(member).where(cb.equal(member.get(Member_.name), email));
        criteria.select(member).where(cb.equal(member.get("email"), email));
        return em.createQuery(criteria).getSingleResult();
    }
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        criteria.select(member).where(cb.equal(member.get("email"), email));
        return em.createQuery(criteria).getSingleResult();
    }

    public List<Member> findAllOrderedByName() {
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaQuery<Member> criteria = cb.createQuery(Member.class);
        Root<Member> member = criteria.from(Member.class);
        // Swap criteria statements if you would like to try out type-safe criteria queries, a new
        // feature in JPA 2.0
        // criteria.select(member).orderBy(cb.asc(member.get(Member_.name)));
        criteria.select(member).orderBy(cb.asc(member.get("name")));
        return em.createQuery(criteria).getResultList();
    }
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        criteria.select(member).where(cb.equal(member.get("email"), email));
        return em.createQuery(criteria).getSingleResult();
    }

    public List<Member> findAllOrderedByName() {
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaQuery<Member> criteria = cb.createQuery(Member.class);
        Root<Member> member = criteria.from(Member.class);
        // Swap criteria statements if you would like to try out type-safe criteria queries, a new
        // feature in JPA 2.0
        // criteria.select(member).orderBy(cb.asc(member.get(Member_.name)));
        criteria.select(member).orderBy(cb.asc(member.get("name")));
        return em.createQuery(criteria).getResultList();
    }
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    public Object getRowKey() {
        return rowKey;
    }

    private CriteriaQuery<Long> createCountCriteriaQuery() {
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaQuery<Long> criteriaQuery = criteriaBuilder.createQuery(Long.class);
        Root<T> root = criteriaQuery.from(entityClass);

        Expression<Boolean> filterCriteria = createFilterCriteria(criteriaBuilder, root);
        if (filterCriteria != null) {
            criteriaQuery.where(filterCriteria);
        }

        Expression<Long> count = criteriaBuilder.count(root);
        criteriaQuery.select(count);

        return criteriaQuery;
    }
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        return criteriaQuery;
    }

    private CriteriaQuery<T> createSelectCriteriaQuery() {
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaQuery<T> criteriaQuery = criteriaBuilder.createQuery(entityClass);
        Root<T> root = criteriaQuery.from(entityClass);

        if (arrangeableState != null) {

            List<Order> orders = createOrders(criteriaBuilder, root);
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        em.close();
    }

    public void testCriteriaAPINoFetch() {
        EntityManager em = emf.createEntityManager();
        CriteriaBuilder cb = em.getCriteriaBuilder();

        // This query is equivalent to the following Java Persistence query
        // language query:
        // SELECT d
        // FROM Department d
        // WHERE d.deptno = 1

        CriteriaQuery<Department> q = cb.createQuery(Department.class);
        Root<Department> d = q.from(Department.class);
        q.where(cb.equal(d.get(Department_.deptno), 20)).select(d);

        List<Department> ds = em.createQuery(q).getResultList();
        System.out.println("-- testCriteriaAPINoFetch -----");
        em.clear();
        Assert.assertEquals(1, ds.size());
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        em.close();
    }

    public void testCriteriaAPIOneFetch() {
        EntityManager em = emf.createEntityManager();
        CriteriaBuilder cb = em.getCriteriaBuilder();

        // 6.5.4 Fetch Joins
        // Example:
        // CriteriaQuery<Department> q = cb.createQuery(Department.class);
        // Root<Department> d = q.from(Department.class);
        // d.fetch(Department_.employees, JoinType.LEFT);
        // q.where(cb.equal(d.get(Department_.deptno), 1)).select(d);
        //
        // This query is equivalent to the following Java Persistence query
        // language query:
        // SELECT DISTINCT d
        // FROM Department d LEFT JOIN FETCH d.employees
        // WHERE d.deptno = 1

        CriteriaQuery<Department> q = cb.createQuery(Department.class);
        Root<Department> d = q.from(Department.class);
        d.fetch(Department_.employees, JoinType.LEFT);
        q.where(cb.equal(d.get(Department_.deptno), 20)).select(d).distinct(true);

        List<Department> ds = em.createQuery(q).getResultList();
        System.out.println("-- testCriteriaAPIOneFetch -----");
        em.clear();
        Assert.assertEquals(1, ds.size());
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        em.close();
    }

    public void testCriteriaAPITwoFetch() {
        EntityManager em = emf.createEntityManager();
        CriteriaBuilder cb = em.getCriteriaBuilder();

        // This query is equivalent to the following Java Persistence query
        // language query:
        // SELECT DISTINCT d
        // FROM Department d LEFT JOIN FETCH d.employees LEFT JOIN FETCH d.employee2s
        // WHERE d.deptno = 1
        CriteriaQuery<Department> q = cb.createQuery(Department.class);
        Root<Department> d = q.from(Department.class);
        d.fetch(Department_.employees, JoinType.LEFT);
        d.fetch(Department_.employee2s, JoinType.LEFT);
        q.where(cb.equal(d.get(Department_.deptno), 20)).select(d).distinct(true);

        List<Department> ds = em.createQuery(q).getResultList();
        System.out.println("-- testCriteriaAPITwoFetch -----");
        em.clear();
        Assert.assertEquals(1, ds.size());
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      criteria.select(member).where(cb.equal(member.get("email"), email));
      return em.createQuery(criteria).getSingleResult();
   }

   public List<Member> findAllOrderedByName() {
      CriteriaBuilder cb = em.getCriteriaBuilder();
      CriteriaQuery<Member> criteria = cb.createQuery(Member.class);
      Root<Member> member = criteria.from(Member.class);
      // Swap criteria statements if you would like to try out type-safe criteria queries, a new
      // feature in JPA 2.0
      // criteria.select(member).orderBy(cb.asc(member.get(Member_.name)));
      criteria.select(member).orderBy(cb.asc(member.get("name")));
      return em.createQuery(criteria).getResultList();
   }
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    public Object getRowKey() {
        return rowKey;
    }

    private CriteriaQuery<Long> createCountCriteriaQuery() {
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaQuery<Long> criteriaQuery = criteriaBuilder.createQuery(Long.class);
        Root<T> root = criteriaQuery.from(entityClass);

        Expression<Boolean> filterCriteria = createFilterCriteria(criteriaBuilder, root);
        if (filterCriteria != null) {
            criteriaQuery.where(filterCriteria);
        }

        Expression<Long> count = criteriaBuilder.count(root);
        criteriaQuery.select(count);

        return criteriaQuery;
    }
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