/// <exception cref="Db4objects.Db4o.Ext.OldFormatException"></exception>
/// <exception cref="Db4objects.Db4o.Ext.DatabaseReadOnlyException"></exception>
protected sealed override void OpenImpl()
{
Config4Impl configImpl = ConfigImpl;
IStorage storage = configImpl.Storage;
bool isNew = !storage.Exists(FileName());
if (isNew)
{
LogMsg(14, FileName());
CheckReadOnly();
_handlers.OldEncryptionOff();
}
bool readOnly = configImpl.IsReadOnly();
bool lockFile = Debug4.lockFile && configImpl.LockFile() && (!readOnly);
if (NeedsLockFileThread())
{
IBin fileBin = storage.Open(new BinConfiguration(FileName(), false, 0, false, configImpl
.BlockSize()));
IBin synchronizedBin = new SynchronizedBin(fileBin);
_file = new BlockAwareBin(synchronizedBin);
}
else
{
IBin bin = storage.Open(new BinConfiguration(FileName(), lockFile, 0, readOnly, configImpl
.BlockSize()));
if (configImpl.AsynchronousSync())
{
bin = new ThreadedSyncBin(bin);
}
_file = new BlockAwareBin(bin);
}
if (isNew)
{
ConfigureNewFile();
if (configImpl.ReservedStorageSpace() > 0)
{
Reserve(configImpl.ReservedStorageSpace());
}
CommitTransaction();
WriteHeader(true, false);
}
else
{
ReadThis();
}
}