[jboss-jira] [JBoss JIRA] (HIBERNATE-149) Second level cache - load object after create in same session - incorrect date

Second level cache - load object after create in same session - incorrect date ------------------------------------------------------------------------------ Key: HIBERNATE-149 URL: https://issues.jboss.org/browse/HIBERNATE-149 Project: Hibernate Integration Issue Type: Bug Environment: Spring 4.1.0.RC2, Hibernate 4.3.6.Final Reporter: Marcin Krajewski Assignee: Steve Ebersole 1. Configure sessionFactory in applicationContext.xml to use second level cache: {code:xml} <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="packagesToScan" value="pl.mkrajewski.test.cache" /> <property name="hibernateProperties"> <props> ... <prop key="hibernate.cache.use_second_level_cache">true</prop> <prop key="hibernate.cache.use_query_cache">true</prop> <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</prop> </props> </property> </bean> {code} 2. Entities to save: cache version: {code:java} @Entity @Cache(usage = CacheConcurrencyStrategy.READ_WRITE) @Table(name = "SLO_MKRAJEWSKI") public class CacheMkrajewski { private Long id; @Id @Column(name = "COLUMN2", nullable = false, precision = 10, scale = 0) @SequenceGenerator(name = "seq_mkrajewski", sequenceName = "seq_mkrajewski", allocationSize = 1) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "seq_mkrajewski") public Long getId() { return this.id; } public void setId(Long id) { this.id = id; } private Date dataOd; @Temporal(TemporalType.DATE) @Column(name = "COLUMN1") public Date getDataOd() { return this.dataOd; } public void setDataOd(Date dataOd) { this.dataOd = dataOd; } @Override public String toString() { return "CacheMkrajewski [id=" + this.id + ", dataOd=" + this.dataOd + "]"; } } {code} no cache version: {code:java} @Entity @Table(name = "SLO_MKRAJEWSKI") public class NoCacheMkrajewski { private Long id; @Id @Column(name = "COLUMN2", nullable = false, precision = 10, scale = 0) @SequenceGenerator(name = "seq_mkrajewski", sequenceName = "seq_mkrajewski", allocationSize = 1) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "seq_mkrajewski") public Long getId() { return this.id; } public void setId(Long id) { this.id = id; } private Date dataOd; @Temporal(TemporalType.DATE) @Column(name = "COLUMN1") public Date getDataOd() { return this.dataOd; } public void setDataOd(Date dataOd) { this.dataOd = dataOd; } @Override public String toString() { return "NoCacheMkrajewski [id=" + this.id + ", dataOd=" + this.dataOd + "]"; } } {code} you can see that difference is only in removing @Cache adnotation for no cache class definition 3. Injecting sessionFactory in DAO: {code:java} @Autowired private SessionFactory sessionFactory; private Session getSession() { return this.sessionFactory.getCurrentSession(); } {code} 4. Creating model in DAO: cache version {code:java} public void save(CacheMkrajewski model) { getSession().persist(model); } {code} or no cache version: {code:java} public void save(NoCacheMkrajewski model) { getSession().persist(model); } {code} same way 5. Loading model in DAO: cache version {code:java} public CacheMkrajewski loadCache(Long id) { return (CacheMkrajewski) getSession().get(CacheMkrajewski.class, id); } {code} no cache version {code:java} public NoCacheMkrajewski loadNoCache(Long id) { return (NoCacheMkrajewski) getSession().get(NoCacheMkrajewski.class, id); } {code} 6. Injection DAO in business layer: business interface {code:java} public interface ITestBusiness { CacheMkrajewski loadCache(Long id); void save(CacheMkrajewski model); NoCacheMkrajewski loadNoCache(Long id); void save(NoCacheMkrajewski model); } {code} Business impl {code:java} @Component @Transactional public class TestBusiness implements ITestBusiness { @Autowired private TestDao dao; @Override public CacheMkrajewski loadCache(Long id) { return this.dao.loadCache(id); } @Override public void save(CacheMkrajewski model) { this.dao.save(model); } @Override public NoCacheMkrajewski loadNoCache(Long id) { return this.dao.loadNoCache(id); } @Override public void save(NoCacheMkrajewski model) { this.dao.save(model); } } {code} 7. invoke JUnit {code:java} @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = {"classpath:/mkrajewski/applicationContext-cache.xml" }) public class DateCacheTest { @Autowired private ITestBusiness testBusiness; @Before public void before() { } @Test public void cacheTest() { CacheMkrajewski cached = cacheEntity(); this.testBusiness.save(cached); cached = this.testBusiness.loadCache(cached.getId()); CacheMkrajewski loaded = this.testBusiness.loadCache(61L); System.out.println(); System.out.println("Cache " + cached); System.out.println("Loaded " + loaded); System.out.println(); } @Test public void noCacheTest() { NoCacheMkrajewski noCached = noCacheEntity(); this.testBusiness.save(noCached); noCached = this.testBusiness.loadNoCache(noCached.getId()); NoCacheMkrajewski loaded = this.testBusiness.loadNoCache(61L); System.out.println(); System.out.println("No cache " + noCached); System.out.println("Loaded " + loaded); System.out.println(); } private CacheMkrajewski cacheEntity() { CacheMkrajewski cache = new CacheMkrajewski(); cache.setDataOd(dateWithNoTime()); return cache; } private NoCacheMkrajewski noCacheEntity() { NoCacheMkrajewski noCache = new NoCacheMkrajewski(); noCache.setDataOd(dateWithNoTime()); return noCache; } private Date dateWithNoTime() { Calendar calendar = Calendar.getInstance(); calendar.clear(); calendar.set(Calendar.YEAR, 2014); calendar.set(Calendar.MONTH, 10); calendar.set(Calendar.DAY_OF_MONTH, 20); return calendar.getTime(); } } {code} we can assume that in database exists object with ID 61 8. Differences in System.outs - toString() difference: cache version {code} Cache CacheMkrajewski [id=130, dataOd=Thu Nov 20 00:00:00 CET 2014] Loaded CacheMkrajewski [id=61, dataOd=2014-11-20] {code} no cache version {code} No cache NoCacheMkrajewski [id=131, dataOd=2014-11-20] Loaded NoCacheMkrajewski [id=61, dataOd=2014-11-20] {code} When we read object created in the same session using second level cache - there is problem with date object. In new object minutes, seconds and CEST is added. When read object created in previous session (id 61) problem disappear. Problem does not exists if we use entity with disabled @Cache 9. Full date objects from eclipse DEBUGGER: {code} CACHE OBJECT "dataOd Date (id=72) " Thu Nov 20 00:00:00 CET 2014 " cdate Gregorian$Date (id=82) " 2014-11-20T00:00:00.000+0100 " cachedFixedDateJan1 735234 " 735234 " cachedFixedDateNextJan1 735599 " 735599 " cachedYear 2014 " 2014 " daylightSaving 0 " 0 " dayOfMonth 20 " 20 " dayOfWeek 5 " 5 " era null " null " forceStandardTime false " FALSE " fraction 0 " 0 " hours 0 " 0 " leapYear false " FALSE " locale null " null " millis 0 " 0 " minutes 0 " 0 " month 11 " 11 " normalized true " TRUE " seconds 0 " 0 " year 2014 " 2014 " zoneinfo ZoneInfo (id=86) " sun.util.calendar.ZoneInfo[id="Europe/Warsaw",offset=3600000,dstSavings=3600000,useDaylight=true,transitions=165,lastRule=java.util.SimpleTimeZone[id=Europe/Warsaw,offset=3600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek=1,startTime=3600000,startTimeMode=2,endMode=2,endMonth=9,endDay=-1,endDayOfWeek=1,endTime=3600000,endTimeMode=2]] 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2014-11-20T00:00:00.000+0100 |" cdate Gregorian$Date (id=129) "| 2014-11-20T00:00:00.000+0100| in first line - toString and id, in second line - only id Why date in object read from cache (after creating in same session) has different toString than read from no cache - objects in debugger looks same, so I really don't know what is the problem