About @Transactional

forum_thread

Improvement in replication

Hi, I was thinking about some improvement in replication mechanism. Our application do only few writes (mostly reads), but those writes are important for us - objects rating, profile modifications. So in current implementation when master node dies, there is only a chance to read data from slave and all writes fails. #1 2012-01-03 11:27 Hi, I was thinking about some improvement in replication mechanism. Our application do only few writes (m ...

 
forum_thread

How to delete M2M relationship?

In user model class I have the following: public class User implements Serializable { #1 2013-08-06 19:19 In user model class I have the following: public class User implements Serializable { ...

 
api-jdo

commit()

Commit the current transaction.(Method of javax.jdo.Transaction)

 
api-jdo

rollback()

Roll back the current transaction.(Method of javax.jdo.Transaction)

 
api-jdo

setRollbackOnly()

Sets the rollback-only status of the transaction to true.(Method of javax.jdo.Transaction)

 
api-jdo

getIsolationLevel()

Get the value for transaction isolation level for this transaction.(Method of javax.jdo.Transaction)

 
api-jdo

setSynchronization(sync)

The user can specify a Synchronization instance to be notified on transaction completions.(Method of javax.jdo.Transaction)

 
api-jpa

javax.persistence.Query

Interface used to control query execution.(Interface of JPA)

 
forum_thread

Incremental online backup

Hello, Are there plans for ObjectDB to handle incremental online backups, where a backup does not create a whole new copy of the DB, but "updates" an existing backup? This behavior would make backups much faster as only a portion of the data would need to be copied. Such a feature would also allow to perform backups more often, several times a day, in order to always have a backup that's closer to the current state of the DB. Thank you #1 2016-04-07 10:19 Hello, Are there plans for ObjectDB to handle incremental online backups, where a backup does not create ...

 
forum_thread

Where Does ObjectDB Block/Lock?

These are questions asked in the context of the proposed architecture described in the forum thread titled, "Sample JDO Architecture for Follow Up Questions".   Questions about blocking/locking.  With my PersistenceManager multiThreaded=true architecture, I desire to know where ObjectDB is actually blocking/locking so I might adapt to achieve better concurrency. 1) Where are locks when accessing PersistenceManager by multiple threads? 2) Does it lock at PersistenceManager.currentTransaction()? #1 2016-07-25 15:41 These are questions asked in the context of the proposed architecture described in the forum thread titled, "Samp ...