About JOIN

release

2.5.7

... in Mac OS. Fixed a bug in using FETCH JOIN in criteria queries. Fixed a bug in cascading remove when ... and maps of invalid types. Changed JOIN FETCH to act as LEFT JOIN in path expressions. Updated ...

 
release

2.6.3

... (no access during backup operation). Fixed JOIN FETCH bugs. Fixed a performance issue with mapped by fetch. ... in Mac OS. Fixed a bug in using FETCH JOIN in criteria queries. Fixed a bug in cascading remove when ...

 
forum_thread

ObjectDB Clustering VS Hadoop Hbase

The Hbase is an open source distributed database on Hadoop, it is robust regardless of the performance problem. The ObjectDB cluster may be a distributed database, I guess. But I dont know whether it has only one entry, or each node has an entry. Could you please explain the difference between Hbase and ObjectDB clustering? TIA   #1 2011-11-01 13:31 The Hbase is an open source distributed database on Hadoop, it is robust regardless of the performance problem. T ...

 
forum_thread

Broken @ManyToOne reference

Hi, I have objects of type A belonging to objects of type B, defined as follows: @MappedSuperclass public abstract class A {   @Id   @ManyToOne(fetch = FetchType.EAGER, cascade=CascadeType.ALL, optional=false)   private B b;   @Id   @Column(length = 36)   private String stringId; } @MappedSuperclass public abstract class B {   @Id   private String name; } #1 2013-03-18 14:27 Hi, I have objects of type A belonging to objects of type B, defined as follows: @ MappedSu ...

 
issue

Server out of memory exceptions

I've started to get memory exceptions on objectdb instances running as a server. The objectdb log reports this as: Bug Version: 2.2.8 Priority: Normal Status: Fixed Replies: 22 Type:  Bug ...

 
forum_thread

Replication error on slave restart

I'm trying to enable replication on master server that was running with "recovery" enabled previously. I have copied database file to slave... and so on by manual. It worked fine. But if I restart slave server: #1 2014-03-01 15:53 I'm trying to enable replication on master server that was running with "recovery" enabled previously. ...

 
api-jpa

getJoinType()

Return the join type.(Method of javax.persistence.criteria.Join)

 
api-jpa

JoinColumn.name

(Optional) The name of the foreign key column.(Annotation Element of javax.persistence.JoinColumn)

 
forum_thread

server.exe on 32bit and 64bit Windows

Is the server.exe compatible to start the objectdb server on Windows 64bit OS?  Or 32bit only?   #1 2011-11-14 10:46 Is the server.exe compatible to start the objectdb server on Windows 64bit OS?  Or 32bit only?   ...

 
api-jpa

javax.persistence.JoinTable

Used in the mapping of associations.(Annotation of JPA)