Package ccs.beetree

A B-Tree-based BLOB persistence engine.

See:
Description

Interface Summary

BeeTreeFilter	A BeeTreeFilter can be supplied to a BeeTreeCompactor to allow the objects in the database to be vetted as they pass.
BeeTreeObserver	A BeeTreeObserver gets regular reports from BeeTreeCompactor as the compaction proceeds.

Class Summary

BeeGeneric	A fairly dumb BeeObject used as a transport by BeeCompactor.
BeeLine	Where a thread must obtain locks on multiple objects, it's essential that the locks are always obtained in the same order to avoid the risk of deadlock.
BeeObject	A BeeObject is an object that is marshalled and stored in a BeeTree database file.
BeeTree	A BeeTree provides storage, access and indexing to a collection of Binary Large OBjects (blobs) gathered together in a single disk file (which may have any name or extension).
BeeTreeCompactor	Handles the problem of compacting a BeeTree.
BeeTreeProgressMonitor	An extension to the HProgressMonitor to monitor BeeTree compaction and similar operations.
DualModeLock	A nestable, MT-safe lock which provides inclusive ("read") or exclusive ("write") locking.
GlobalMutex	A nestable, inter-VM global mutex.
LockHolderGroup	Represents a group of threads which all hold a lock, or some other object which has the same semantics.

Exception Summary

BeeException	A BeeTree (database) operation didn't work.
ConsistencyException	A BeeTree has become corrupt.
DeadlockException	Thrown by a BeeTree operation to indicate that the request to get a lock has timed out.

Package ccs.beetree Description

A B-Tree-based BLOB persistence engine. Multi-thread / multi-process safe. Arbitrary- length keys, arbitrary-length objects (object size limit is a little less than 4 Exabytes, if the underlying filesystem and media can handle it!). Encrypted.

Most applications should use the object-persistence layer provided by ccs.cdb instead of using beetree directly.

Key classes:

• BeeTree
• BeeObject

See Also:

ccs.cdb