Difference between Hibernate createCriteria, createQuery, createSQLQuery functions

Question

Can anyone please tell me the difference between Hibernate\'s:

• createCriteria
• createQuery
• createSQLQuery

Answer 1

------------------------
        PERSON
------------------------
**DB_Column**| **POJO**
PERSON_ID    | personID
------------------------

createQuery()

you are using pojo fields. Using HQL syntax.

Query query = session.createQuery("from Person s where s.personID like 'A%'");

//    returns: 

List persons = query.list();

createSQLQuery()

You are using Native|DB fields. After googling some site, Came to know this will also clear the cache as hibernate don't know the what you have executed.

Query query = session.createSQLQuery("select s.* from Person s where s.person_ID like 'A%'");

//    returns: 

List persons = query.list();.

createCriteria()

• Create sql query using Criteria object for setting the query parameters.
• Useful when switching DB.

• Read only query

  Criteria criteria = session.createCriteria(Person.class);
  criteria.add(Restrictions.like("personId", "A%"));
  List persons = criteria .list();