Question

How represent a date in a JPA query, without using (typed) parameters?
If the date is really fixed (for example, 1 mar 1980), the code:

TypedQuery<MyEntity> q = em.createQuery("select myent from db.MyEntity myent where myent.theDate=?1", db.MyEntity.class).setParameter(1, d);

having set:

Date d = new Date(80, Calendar.MARCH, 1);

is quite verbose, isn’t it? I would like to embed 1980/1/3 into my query.

UPDATE:
I modified the sample date to 1980/1/3, because 1980/1/1 as it was, was ambiguous.

Answer 1

IIRC you can use date literals in JPQL queries just like you do it in JDBC, so something like:

// d at the beginning means 'date'
{d 'yyyy-mm-dd'} i.e. {d '2009-11-05'}

// t at the beginning means 'time'
{t 'hh-mm-ss'} i.e. {t '12-45-52'}

// ts at the beginning means 'timestamp'; the part after dot is optional
{ts 'yyyy-mm-dd hh-mm-ss.f'} i.e. {ts '2009-11-05 12-45-52.325'}

should do the work (the curly braces and apostrophes are required).