About null

release

2.5.6

... Fixed a bug in comparing String based enum to   NULL in queries. Fixed an activation issue with hosteurope.de ( ... Fixed Doctor's index rebuilding to use NULL values for missing values of new fields. Fixed a bug in ...

 
release

2.6.9

... a NullPointerException  due to unexpected null SharedCacheMode in PersistenceUnitInfo. Fixed a ... Fixed a bug in comparing String based enum to   NULL in queries. Fixed an activation issue with hosteurope.de ( ...

 
api-jdo

javax.jdo.PersistenceManagerFactory

The PersistenceManagerFactory is the interface to use to obtain PersistenceManager instances.(Interface of JDO)

 
release

2.4.6

... clearing). Fixed the Explorer to show null values in primitive fields (unset values in new fields) correctly. ... Changed non loaded collections on detachment to null (rather than empty collections ). Fixed a critical bug ...

 
release

2.5.1

... Fixed Doctor's index rebuilding to use NULL values for missing values of new fields. Fixed a bug in ... clearing). Fixed the Explorer to show null values in primitive fields (unset values in new fields) correctly. ...

 
api-jdo

javax.jdo.Query

The Query interface allows applications to obtain persistent instances, values, and aggregate data from the data store.(Interface of JDO)

 
release

2.4.1

... Changed non loaded collections on detachment to null (rather than empty collections ). Fixed a critical bug ... a replicated slave server. Fixed NOT NULL handling for basic (non relationship) references. Fixed a ...

 
release

2.5.7

... Fixed a bug in comparing String based enum to   NULL in queries. Fixed an activation issue with hosteurope.de ( ... Fixed Doctor's index rebuilding to use NULL values for missing values of new fields. Fixed a bug in ...

 
release

2.4.5

... clearing). Fixed the Explorer to show null values in primitive fields (unset values in new fields) correctly. ... Changed non loaded collections on detachment to null (rather than empty collections ). Fixed a critical bug ...

 
forum_thread

pesimistic Lock semantic

Hi   I have tested pesimistic lock and the result was for me unexpected. In the first transaction i modified one object and in the second transaction i wanted to the same and  I got an exceptopn that lock could not be granted, quite nice but in that moment I wanted commit the first transaction and I also got lock exception. this the test:   public void testPesimisticLock() {   PersistenceManager pm1 = null;   PersistenceManager pm2 = null; ... { PersistenceManager pm1 = null ; PersistenceManager pm2 = null ;   try { pm1 = pmf. ... begin ( ) ; Picture picture2 = null ; try { picture2 = ( Picture ) ...