User user = new User();
user.setAge(25);
user.setName("Mark");

session.save(user);

session.createQuery("FROM User u").setCacheable(true).list();
session.createQuery("FROM User u").setCacheable(true).list();

assertEquals(1, getSessionFactory().getStatistics().getQueryCacheHitCount());

-------------------------------------------------------------------------------------------
java.lang.AssertionError: expected:<1> but was:<0>

I think that hibernate flush user object before every query(why???) and query cache invalidate.
If i not insert user and execute only 2 queries - all ok (cache works).

Any ideas?

----------------------------

User mapping:

@Entity
@Table(name = "user")
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class User {

@Id
@GeneratedValue
private int id;

@Column(length = 32, nullable = false)
private String name;

@Column(nullable = false)
private int age;

...getters/setters

----------------------------

ehcache.xml:

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="ehcache.xsd">
<defaultCache maxElementsInMemory="0" eternal="true" overflowToDisk="false" />
<cache name="com.teztour.domain.User" maxElementsInMemory="10000" eternal="true" overflowToDisk="false" />
<cache name="org.hibernate.cache.StandardQueryCache" maxElementsInMemory="10000" eternal="true" overflowToDisk="false" />
<cache name="org.hibernate.cache.UpdateTimestampsCache" maxElementsInMemory="10000" eternal="true" overflowToDisk="false" />
</ehcache>

If flushmode is auto (which is default) hibernate can synchronize persistance context objects with database before query execution. Try to use flushmode commit or manual.

Yes, it's true, but what about dirty checking?

Did you implement equals and hashcode correct? Please note the proxyproblem inside the equals() and please use only bean.getAttribute() instad of bean.attribute.

I don't need to implement equals and hashCode.

I call session.save(user) and hibernate MUST remember ID of user object.

And if user object don't change, persistent context don't flush!

F.e.:

User user = session.get(User.class, 3);

session.createQuery("FROM User u").setCacheable(true).list();
session.createQuery("FROM User u").setCacheable(true).list();

assertEquals(1, getSessionFactory().getStatistics().getQueryCacheHitCount());

All ok! But if user object is new - cache don't work. (