Freeze

Overview

module Freeze

Freeze provides automatic persistence for Ice servants.

Interface Index

BackgroundSaveEvictor — A background-save evictor is an evictor that saves updates asynchronously in a background thread.
Connection — A connection to a database (database environment with Berkeley DB).
Evictor — An automatic Ice object persistence manager, based on the evictor pattern.
EvictorIterator — An iterator for the objects managed by the evictor.
ServantInitializer — A servant initializer provides the application with an opportunity to perform custom servant initialization.
Transaction — A transaction.
TransactionalEvictor — A transactional evictor is an evictor that performs every single read-write operation within its own transaction.

Exception Index

DatabaseException — A Freeze database exception.
DeadlockException — A Freeze database deadlock exception.
EvictorDeactivatedException — This exception is raised if the evictor has been deactivated.
IndexNotFoundException — Exception raised when Freeze fails to locate an index.
InvalidPositionException — This Freeze Iterator is not on a valid position, for example this position has been erased.
NoSuchElementException — This exception is raised if there are no further elements in the iteration.
NotFoundException — A Freeze database exception, indicating that a database record could not be found.
TransactionAlreadyInProgressException — An attempt was made to start a transaction while a previous transaction has not yet been committed or rolled back.

Structure Index

CatalogData — The catalog keeps information about Freeze Maps and Freeze evictors in a Berkeley Db environment.
ObjectRecord — The evictor uses a number of maps with Ice::Identity keys and ObjectRecord values as its persistent storage.
Statistics — The evictor maintains statistics about each object.

Sequence Index

Key — A database key, represented as a sequence of bytes.
Value — A database value, represented as a sequence of bytes.

Sequences

sequence<byte>

Anchor
Key Key

Key

A database key, represented as a sequence of bytes.

sequence<byte>

Anchor
Value Value

Value

A database value, represented as a sequence of bytes.