Package com.db4o.internal

Class IoAdaptedObjectContainer

java.lang.Object

com.db4o.internal.ObjectContainerBase

com.db4o.internal.ExternalObjectContainer

com.db4o.internal.LocalObjectContainer

com.db4o.internal.IoAdaptedObjectContainer

All Implemented Interfaces:

EmbeddedObjectContainer, ExtObjectContainer, InternalObjectContainer, ObjectContainerSpec, Internal4, ObjectContainer, TransientClass

public class IoAdaptedObjectContainer
extends LocalObjectContainer
implements EmbeddedObjectContainer

Field Summary

Fields inherited from class com.db4o.internal.LocalObjectContainer

_fileHeader, _pointerIo

Fields inherited from class com.db4o.internal.ObjectContainerBase

_blockConverter, _classCollection, _config, _handlers, _lock, _timeStampIdGenerator, _transaction

Method Summary

Modifier and Type	Method	Description
void	backup(Storage targetStorage, java.lang.String path)	backs up a database file of an open ObjectContainer.
void	backupSync(Storage targetStorage, java.lang.String path)	backs up a database file of an open ObjectContainer.
byte	blockSize()
void	blockSize(int size)
void	closeTransaction(Transaction transaction, boolean isSystemTransaction, boolean rollbackOnClose)
void	commit1(Transaction trans)
protected void	fatalStorageShutdown()
long	fileLength()
java.lang.String	fileName()
protected void	openImpl()
void	overwriteDeletedBytes(int address, int length)
void	readBytes(byte[] bytes, int address, int length)
void	readBytes(byte[] bytes, int address, int addressOffset, int length)
void	reserve(int byteCount)
protected void	shutdownDataStorage()
void	syncFiles()
void	syncFiles(java.lang.Runnable runnable)
BlockAwareBin	timerFile()
void	writeBytes(ByteArrayBuffer buffer, int blockedAddress, int addressOffset)

Methods inherited from class com.db4o.internal.LocalObjectContainer

allocatePointerSlot, allocateSafeSlot, allocateSlot, allocateSlotForNewUserObject, allocateSlotForUserObjectUpdate, appendBytes, blockSizeReadFromFile, classOnlyQuery, close2, closeIdSystem, commitHook, commitTransaction, converterVersion, createBTreeClassIndex, createIdSystem, currentVersion, debugReadPointerSlot, defaultToString, delete4, doFinalize, executeQuery, free, free, freespaceManager, from, generateNewIdentity, getAll, getFileHeader, getIDsForClass, identity, idForNewUserObject, idSystem, installDebugFreespaceManager, instanceCount, isDeleted, isValidPointer, localSystemTransaction, maximumDatabaseFileSize, newEventRegistry, newQueryResult, newQueryResult, newTransaction, newTransactionalIdSystem, openSession, overwriteDeletedBlockedSlot, queryAllObjects, raiseCommitTimestamp, readBufferById, readBufferById, readBufferBySlot, readPointerSlot, readSlotBuffers, readStatefulBufferById, readStatefulBufferById, readStatefulBufferBySlot, releaseSemaphore, releaseSemaphore, releaseSemaphores, rollback1, setDirtyInSystemTransaction, setIdentity, setNextTimeStampId, setRegularEndAddress, setSemaphore, setSemaphore, setServer, shutdown, systemData, systemInfo, writeDirtyClassMetadata, writeEncrypt, writeHeader, writeNew, writePointer, writeTransactionPointer, writeUpdate

Methods inherited from class com.db4o.internal.ExternalObjectContainer

activate, activate, bind, commit, deactivate, deactivate, delete, descend, ext, getByID, getByUUID, getID, getObjectInfo, inCallback, isActive, isCached, isStored, peekPersisted, purge, query, query, query, query, queryByExample, refresh, rollback, store, store, storedClass, storedClasses

Methods inherited from class com.db4o.internal.ObjectContainerBase

activate, activate, activationContextFor, activationDepthProvider, applyRenames, asTopLevelCall, backup, backupSync, bind, bind2, blockConverter, callbacks, callbacks, checkClosed, checkReadOnly, checkStillToSet, checkTransaction, checkTransaction, classCollection, classMetadataForID, classMetadataForName, classMetadataForObject, classMetadataForReflectClass, classMetadataIdForName, close, closeSystemTransaction, closeUserTransaction, commit, commitTimestampIndex, config, configImpl, configure, container, createBlockConverter, createClassMetadata, createReferenceSystem, createStatefulBuffer, createStringIO, db4oTypeStored, deactivate, deactivate, decryptedBufferByAddress, defaultActivationDepth, delete, delete1, delete2, deleteByID, detectSchemaChanges, dispatchsEvents, environment, fatalShutdown, finalize, flagAsHandled, generateTimeStampId, generateTransactionTimestamp, getActivatedObjectFromCache, getByID, getByID2, getByUUID, getHardObjectReferenceById, getHardReferenceBySignature, getID, getNativeQueryHandler, getObjectInfo, handledInCurrentTopLevelCall, handleExceptionOnClose, handlers, hasShutDownHook, initalizeWeakReferenceSupport, initialize1, initializeClassMetadataRepository, initializePostOpenExcludingTransportObjectContainer, initializeTransactions, isCached, isClient, isClosed, isStored, knownClasses, lock, logMsg, maintainsIndices, needsLockFileThread, needsUpdate, newSystemTransaction, newUserTransaction, newWeakReference, open, peekPersisted, peekPersisted, peekReference, produceClassMetadata, purge, purge, query, query, query, query, query, queryByExample, rawBufferByAddress, readActivatedObjectNotInCache, readWriterByAddress, referenceSystemRegistry, reflector, refresh, refreshInternal, replaceClassMetadataRepository, replicationCallState, rollback, send, showInternalClasses, shutdownObjectContainer, stackDepth, stackDepth, stillToActivate, stillToDeactivate, stopSession, store, store, store2, storeAfterReplication, storeAll, storeAll, storeByNewReplication, storedClass, storedClasses, storeInternal, storeInternal, stringIO, syncExec, systemTransaction, threadPool, topLevelCallId, topLevelCallId, toString, transaction, tryGetByID, typeHandlerForClass, typeHandlerForClassMetadataID, updateDepthProvider, useDefaultTransactionTimestamp, uUIDIndex, version, versionIndex, withEnvironment, withTransaction

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.db4o.EmbeddedObjectContainer

backup

Methods inherited from interface com.db4o.ext.ExtObjectContainer

activate, backup, backupSync, bind, configure, deactivate, descend, getByID, getByUUID, getID, getObjectInfo, isActive, isCached, isClosed, isStored, knownClasses, lock, peekPersisted, purge, purge, reflector, refresh, store, storedClass, storedClasses, version

Methods inherited from interface com.db4o.internal.InternalObjectContainer

callbacks, callbacks, classMetadataForID, classMetadataForName, classMetadataForReflectClass, configImpl, container, getNativeQueryHandler, handlers, inCallback, isClient, storeAll, syncExec, transaction, updateDepthProvider

Methods inherited from interface com.db4o.ObjectContainer

activate, close, commit, deactivate, delete, ext, query, query, query, query, query, queryByExample, rollback, store

Method Detail

openImpl

protected final void openImpl()
                       throws OldFormatException,
                              DatabaseReadOnlyException

Specified by:

openImpl in class ObjectContainerBase

Throws:

OldFormatException

DatabaseReadOnlyException

backup

public void backup(Storage targetStorage,
                   java.lang.String path)
            throws DatabaseClosedException,
                   Db4oIOException

Description copied from interface: ExtObjectContainer

backs up a database file of an open ObjectContainer.

While the backup is running, the ObjectContainer can continue to be used. Changes that are made while the backup is in progress, will be applied to the open ObjectContainer and to the backup.

While the backup is running, the ObjectContainer should not be closed.

Note that this is designed to run as a background process: To avoid harming performance of concurrently active database operations, it tries to leave room for other threads as much as possible and thus will be orders of magnitude slower than a regular file copy. If you are looking for a faster backup (that will block all other database operations), use ExtObjectContainer.backupSync(Storage, String) instead.

If a file already exists at the specified path, it will be overwritten.

This method is intended for cross-storage backups, i.e. backup from an in-memory database to a file.

Specified by:

backup in interface ExtObjectContainer

Specified by:

backup in class ExternalObjectContainer

Parameters:

targetStorage - the Storage to be used for backup

path - a fully qualified path

Throws:

DatabaseClosedException - db4o database file was closed or failed to open.

Db4oIOException - I/O operation failed or was unexpectedly interrupted.

backupSync

public void backupSync(Storage targetStorage,
                       java.lang.String path)
                throws DatabaseClosedException,
                       Db4oIOException

Description copied from interface: ExtObjectContainer

backs up a database file of an open ObjectContainer. While the backup is running, the ObjectContainer should not be closed.

Note that this blocks all other concurrently active database operations for the full duration of the backup. If you intend to run a backup as a less intrusive background process concurrently with other database operations, use ExtObjectContainer.backup(Storage, String) instead.

If a file already exists at the specified path, it will be overwritten.

This method can be used for cross-storage backups, i.e. backup from an in-memory database to a file.

Specified by:

backupSync in interface ExtObjectContainer

Specified by:

backupSync in class ExternalObjectContainer

Parameters:

targetStorage - the Storage to be used for backup

path - a fully qualified path

Throws:

DatabaseClosedException - db4o database file was closed or failed to open.

Db4oIOException - I/O operation failed or was unexpectedly interrupted.

blockSize

public void blockSize(int size)

Specified by:

blockSize in class ObjectContainerBase

blockSize

public byte blockSize()

Specified by:

blockSize in class ObjectContainerBase

shutdownDataStorage

protected void shutdownDataStorage()

Specified by:

shutdownDataStorage in class ObjectContainerBase

closeTransaction

public void closeTransaction(Transaction transaction,
                             boolean isSystemTransaction,
                             boolean rollbackOnClose)

Specified by:

closeTransaction in class ObjectContainerBase

commit1

public void commit1(Transaction trans)

Overrides:

commit1 in class LocalObjectContainer

fileLength

public long fileLength()

Specified by:

fileLength in class LocalObjectContainer

fileName

public java.lang.String fileName()

Specified by:

fileName in class LocalObjectContainer

readBytes

public void readBytes(byte[] bytes,
                      int address,
                      int length)
               throws Db4oIOException

Specified by:

readBytes in class ObjectContainerBase

Throws:

Db4oIOException

readBytes

public void readBytes(byte[] bytes,
                      int address,
                      int addressOffset,
                      int length)
               throws Db4oIOException

Specified by:

readBytes in class ObjectContainerBase

Throws:

Db4oIOException

reserve

public void reserve(int byteCount)
             throws DatabaseReadOnlyException

Specified by:

reserve in class ObjectContainerBase

Throws:

DatabaseReadOnlyException

syncFiles

public void syncFiles()

Specified by:

syncFiles in class LocalObjectContainer

syncFiles

public void syncFiles(java.lang.Runnable runnable)

Specified by:

syncFiles in class LocalObjectContainer

writeBytes

public void writeBytes(ByteArrayBuffer buffer,
                       int blockedAddress,
                       int addressOffset)

Specified by:

writeBytes in class LocalObjectContainer

overwriteDeletedBytes

public void overwriteDeletedBytes(int address,
                                  int length)

Specified by:

overwriteDeletedBytes in class LocalObjectContainer

timerFile

public BlockAwareBin timerFile()

fatalStorageShutdown

protected void fatalStorageShutdown()

Specified by:

fatalStorageShutdown in class ObjectContainerBase