CODEWITHSUNDEEP
hibernatesessionjpa-2.0criteria-apicriteriaquery
Skyhan
Skyhan

Reputation: 891

Converting a Hibernate Criteria Query to JPA 2 Criteria Query

I have the following Hibernate 3.x Criteria Query which I want to convert it to a Hibernate JPA 2.0 query:

Calendar calLo = new GregorianCalendar();
calLo.set(Calendar.HOUR_OF_DAY, 00);
calLo.set(Calendar.MINUTE, 00);
calLo.set(Calendar.SECOND, 00);
Calendar calHi = new GregorianCalendar();
calHi.set(Calendar.HOUR_OF_DAY, 23);
calHi.set(Calendar.MINUTE, 59);
calHi.set(Calendar.SECOND, 00);

List taskList = session.createCriteria(Task.class, "task").add(Restrictions.ge("task.taskDate", calLo.getTime())).add(Restrictions.le("task.taskDate", calHi.getTime())).add(Restrictions.eq("task.taskActive", true)).addOrder(Order.desc("task.taskNo")).list();

I attempt to re-werite the code starting like:

CriteriaBuilder cb = em.getCriteriaBuilder();
CriteriaQuery cq = cb.createQuery(Task.class);
Root task = cq.from(Task.class);
cq.select(task).where(cb.ge("task.taskDate", calLo.getTime()) ... );

But JPA 2 criteria queries do not seem to support CriteriaBuilder.ge(...) method to accept dates or calendars as input parameters and my code seems to fail from the start.

I need advice to retain and adapt the functionality of the Hibernate session criteria.

Upvotes: 2

Views: 3445

Answers (1)

JB Nizet
JB Nizet

Reputation: 691715

As the javadoc indicates, the ge() method is for numbers. Use greaterThanOrEqualTo(), which accepts any Comparable.

Upvotes: 6

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