void configureNewFile() { blockSize(configImpl().blockSize()); _fileHeader = FileHeader.newCurrentFileHeader(); setRegularEndAddress(_fileHeader.length()); newSystemData(configImpl().freespaceSystem(), configImpl().idSystemType()); systemData().converterVersion(Converter.VERSION); createStringIO(_systemData.stringEncoding()); createIdSystem(); initializeClassMetadataRepository(); initalizeWeakReferenceSupport(); generateNewIdentity(); AbstractFreespaceManager blockedFreespaceManager = AbstractFreespaceManager.createNew(this); installFreespaceManager(blockedFreespaceManager); initNewClassCollection(); initializeEssentialClasses(); _fileHeader.initNew(this); blockedFreespaceManager.start(0); }
void readThis() throws OldFormatException { newSystemData(AbstractFreespaceManager.FM_LEGACY_RAM, StandardIdSystemFactory.LEGACY); blockSizeReadFromFile(1); _fileHeader = FileHeader.read(this); if (config().generateCommitTimestamps().isUnspecified()) { config().generateCommitTimestamps(_systemData.idToTimestampIndexId() != 0); } createStringIO(_systemData.stringEncoding()); createIdSystem(); initializeClassMetadataRepository(); initalizeWeakReferenceSupport(); setNextTimeStampId(systemData().lastTimeStampID()); classCollection().setID(_systemData.classCollectionID()); classCollection().read(systemTransaction()); Converter.convert(new ConversionStage.ClassCollectionAvailableStage(this)); _fileHeader.readIdentity(this); if (_config.isReadOnly()) { return; } if (!configImpl().commitRecoveryDisabled()) { _fileHeader.completeInterruptedTransaction(this); } FreespaceManager blockedFreespaceManager = AbstractFreespaceManager.createNew(this, _systemData.freespaceSystem()); installFreespaceManager(blockedFreespaceManager); blockedFreespaceManager.read(this, _systemData.inMemoryFreespaceSlot()); blockedFreespaceManager.start(_systemData.bTreeFreespaceId()); _fileHeader = _fileHeader.convert(this); if (freespaceMigrationRequired(blockedFreespaceManager)) { migrateFreespace(blockedFreespaceManager); } writeHeader(true, false); if (Converter.convert(new ConversionStage.SystemUpStage(this))) { _systemData.converterVersion(Converter.VERSION); _fileHeader.writeVariablePart(this); transaction().commit(); } }
public void setIdentity(Db4oDatabase identity) { synchronized (lock()) { _systemData.identity(identity); // The dirty TimeStampIdGenerator triggers writing of // the variable part of the systemdata. We need to // make it dirty here, so the new identity is persisted: _timeStampIdGenerator.generate(); _fileHeader.writeVariablePart(this); } }
private boolean freespaceMigrationRequired(FreespaceManager freespaceManager) { if (freespaceManager == null) { return false; } byte readSystem = _systemData.freespaceSystem(); byte configuredSystem = configImpl().freespaceSystem(); if (freespaceManager.systemType() == configuredSystem) { return false; } if (configuredSystem != 0) { return true; } return AbstractFreespaceManager.migrationRequired(readSystem); }
public Runnable commitHook() { _systemData.lastTimeStampID(_timeStampIdGenerator.last()); return _fileHeader.commit(false); }
public Db4oDatabase identity() { return _systemData.identity(); }
public int converterVersion() { return _systemData.converterVersion(); }
private void newSystemData(byte freespaceSystemType, byte idSystemType) { _systemData = new SystemData(); _systemData.stringEncoding(configImpl().encoding()); _systemData.freespaceSystem(freespaceSystemType); _systemData.idSystemType(idSystemType); }