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forum_thread

Field level privileges

Hello , we are currently making new instant messenger but we were planing to use some security addons and privileges on access some of the fields on java side.   Can we give privileges to users , for example some users can only read some fields and some just can write java fields. Some users only allowed insert ability. Anonymous access only accesses some of the fields. ... application users as entity objects and use only minimal number of ObjectDB users (one or a few) to process activity of all the ...

 
forum_thread

Shrinking Database Files

These are questions asked in the context of the proposed architecture described in the forum thread titled, "Sample JDO Architecture for Follow Up Questions".   I thought I read something on the ObjectDB website (forum? 1.x manual?), which I cannot find now, that stated that the datastore file never shrinks when large number of objects are deleted and the only way to reclaim that space would be with Database Doctor. Is there a way to reclaim database file space? ... stated that the datastore file never shrinks when large number of objects are deleted and the only way to reclaim that space would be ...

 
api-jdo

allocate(additional)

Provides a hint to the implementation that the application will need additional sequence value objects in short order.(Method of javax.jdo.datastore.Sequence)

 
api-jpa

setFirstResult(startPosition)

Set the position of the first result to retrieve.(Method of javax.persistence.Query)

 
forum_thread

object creation during pmf.getPersistenceManager()

Hi ... transaction we will create instances for all classes. The number of objects created during this invocation is really huge, that causes ...

 
api-jdo

replacingCharField(pc, field)

The replacement value of the field in the calling instance.(Method of javax.jdo.spi.StateManager)

 
api-jdo

replacingStringField(pc, field)

The replacement value of the field in the calling instance.(Method of javax.jdo.spi.StateManager)

 
api-jdo

setLongField(pc, field, currentValue, newValue)

Mark the field as modified by the user.(Method of javax.jdo.spi.StateManager)

 
api-jdo

fetchFloatField(fieldNumber)

Fetch one field from the field manager.(Method of javax.jdo.spi.PersistenceCapable.ObjectIdFieldSupplier)

 
api-jdo

storeShortField(fieldNumber, value)

Store one field into the field manager.(Method of javax.jdo.spi.PersistenceCapable.ObjectIdFieldConsumer)