About flush

manual

Storing JPA Entity Objects

Explains how to use JPA to store (persist) entity objects in the database.... consideration. The combination of the clear and flush methods can be used to save memory in large transactions: em. ... ) == 0 ) { em. flush flush() EntityManager's method Synchronize the ...

 
manual

Database Management Settings

Explains settings and performance tuning of the ObjectDB Java object database for JPA/JDO. The <database> configuration element specifies back end (database engine) settings which are relevant on the server side and in embedded mode. The default configuration file contains the following <database> element: ...

 
manual

Setting and Tuning of JPA Queries

Explains various JPA query settings - result range, flush and lock.... Result Range (setFirstResult, setMaxResults) Flush Mode (setFlushMode) Lock Mode (setLockMode) ... the query object on which they were invoked). Flush Mode (setFlushMode) Changes made to a database using an ...

 
api-jpa

flush()

Synchronize the persistence context to the underlying database.(Method of javax.persistence.EntityManager)

 
api-jdo

flush()

Flushes all dirty, new, and deleted instances to the data store.(Method of javax.jdo.PersistenceManager)

 
issue

ArrayIndexOutOfBoundsException on flush

The following exception was thrown when my app attempted to flush an objectdb database: ... following exception was thrown when my app attempted to flush an objectdb database: Caused by: ... rbccm.felix.objectdb.workflow.ObjectDbGraphContainer.flush(Unknown Source) at ... com.objectdb.o.OBM.bI(OBM.java:818) at com.objectdb.o.OBM.flush(OBM.java:739) ... 10 more Caused by: ...

 
issue

Internal exception on flush

Today I received the exception below on running the following code: ... em. persist ( instance ) ; em. flush ( ) ; loadedgraph = instance ; } ... com.objectdb.o.OBM.bI(OBM.java:818) at com.objectdb.o.OBM.flush(OBM.java:739) at ...

 
forum_thread

Internal objectdb error when execute a flush

We get an internal objectdb error, when we execute a flush. Why? What's wrong? It performs with version objectdb-2.6.4_04. It does not perform with version objectdb-2.6.6_04.   ... We get an internal objectdb error, when we execute a flush. Why? What's wrong? It performs with version ... ~[na:na] at com.objectdb.o.OBM.flush(OBM.java:768) ~[na:na] at ... ~[na:na] at com.objectdb.o.OBM.flush(OBM.java:765) ~[na:na] ... 19 common frames omitted ...

 
forum_thread

Remove an entity which attributes were changed - OptimisticLockException

We use an OSGi environment and we have three OSGi plugins.   In plugin A an entity is loaded and the entity is passed to plugin B. Plugin B changes an attribute on the entity. Plugin C removes the entity from the database. After commit the transaction an exception is caused with optimistic lock exception of the removed entity. If this operations on the entity are executed in only one plugin, it works well. ... by two different users. Note that user 1 may flush the changes implicitly by running a query. You can run specific queries with COMMIT flush mode to avoid flushing changes to the database. You may ...

 
api-jpa

setFlushMode(flushMode)

Set the flush mode type to be used for the query execution.(Method of javax.persistence.TypedQuery)