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 static void register(Converter converter) {
converter.register(ClassIndexesToBTrees_5_5.VERSION, new ClassIndexesToBTrees_5_5());
converter.register(FieldIndexesToBTrees_5_7.VERSION, new FieldIndexesToBTrees_5_7());
converter.register(ClassAspects_7_4.VERSION, new ClassAspects_7_4());
converter.register(ReindexNetDateTime_7_8.VERSION, new ReindexNetDateTime_7_8());
converter.register(DropEnumClassIndexes_7_10.VERSION, new DropEnumClassIndexes_7_10());
converter.register(DropGuidClassIndexes_7_12.VERSION, new DropGuidClassIndexes_7_12());
converter.register(
DropDateTimeOffsetClassIndexes_7_12.VERSION, new DropDateTimeOffsetClassIndexes_7_12());
converter.register(
VersionNumberToCommitTimestamp_8_0.VERSION, new VersionNumberToCommitTimestamp_8_0());
}