db4o

Db4objects.Db4o.Ext Namespace

Advanced API package.

Namespace hierarchy

Classes

Class Description
DatabaseFileLockedException this Exception is thrown during any of the db4o open calls if the database file is locked by another process.
Db4oException db4o exception wrapper: Exceptions occurring during internal processing will be proliferated to the client calling code encapsulated in an exception of rhis type.
Db4oUUID a unique universal identify for an object.
ExtDb4oFactory extended factory class with static methods to open special db4o sessions.
MemoryFile carries in-memory data for db4o in-memory operation.
ObjectNotStorableException this Exception is thrown, if objects can not be stored and if db4o is configured to throw Exceptions on storage failures.
OldFormatException An old file was detected and could not be open.
Status Static constants to describe the status of objects.

Interfaces

Interface Description
IDb4oCallback generic callback interface.
IExtClient extended client functionality for the ExtObjectContainer interface.

Both Db4o.openClient() methods always return an
ExtClient
object so a cast is possible.

The ObjectContainer functionality is split into multiple interfaces to allow newcomers to focus on the essential methods.
IExtObjectContainer extended functionality for the ObjectContainer interface.

Every db4o ObjectContainer always is an
ExtObjectContainer
so a cast is possible.

Db4objects.Db4o.IObjectContainer.Ext is a convenient method to perform the cast.

The ObjectContainer functionality is split to two interfaces to allow newcomers to focus on the essential methods.
IExtObjectServer extended functionality for the ObjectServer interface.
IExtObjectSet extended functionality for the ObjectSet interface.

Every db4o ObjectSet always is an ExtObjectSet so a cast is possible.

Db4objects.Db4o.IObjectSet.Ext is a convenient method to perform the cast.

The ObjectSet functionality is split to two interfaces to allow newcomers to focus on the essential methods.
IObjectCallbacks callback methods.
IObjectInfo interface to the internal reference that an ObjectContainer holds for a stored object.
IStoredClass the internal representation of a stored class.
IStoredField the internal representation of a field on a stored class.
ISystemInfo provides information about system state and system settings.