/// <summary> Used to create the correct storage type </summary>
internal override INodeStorage CreateStorage()
{
if (StorageType == StorageType.Custom)
{
return(Check.NotNull(StorageSystem));
}
if (StorageType == StorageType.Memory)
{
return(new BTreeMemoryStore());
}
bool exists = File.Exists(FileName);
if (CreateFile == CreatePolicy.Always || (!exists && CreateFile == CreatePolicy.IfNeeded))
{
return(BTreeFileStore.CreateNew(FileName, FileBlockSize, FileGrowthRate, ConcurrentWriters, FileOpenOptions));
}
InvalidConfigurationValueException.Assert(exists, "CreateFile", "The file does not exist and CreateFile is Never");
return(new BTreeFileStore(FileName, FileBlockSize, FileGrowthRate, ConcurrentWriters, FileOpenOptions, ReadOnly));
}
/// <summary> Used to create the correct storage type </summary>
internal override INodeStorage CreateStorage()
{
if (StorageType == StorageType.Custom)
{
return(Check.NotNull(StorageSystem));
}
if (StorageType == StorageType.Memory)
{
return(new BTreeMemoryStore());
}
InvalidConfigurationValueException.Assert(StorageType == StorageType.Disk, "StorageType", "Unknown value defined.");
bool exists = File.Exists(FileName);
if (exists && new FileInfo(FileName).Length == 0)
{
exists = false;
File.Delete(FileName);
}
bool createNew = CreateFile == CreatePolicy.Always ||
(exists == false && CreateFile == CreatePolicy.IfNeeded);
if (!exists && !createNew)
{
throw new InvalidConfigurationValueException("CreateFile", "The file does not exist and CreateFile is Never");
}
TransactedCompoundFile.Options foptions =
new TransactedCompoundFile.Options(FileName)
{
BlockSize = FileBlockSize,
FileOptions = FileOptions.None,
ReadOnly = ReadOnly,
CreateNew = createNew
};
switch (StoragePerformance)
{
case StoragePerformance.Fastest:
{
SetStorageCache(true);
break;
}
case StoragePerformance.CommitToCache:
{
foptions.FileOptions = FileOptions.None;
foptions.CommitOnWrite = true;
break;
}
case StoragePerformance.CommitToDisk:
{
foptions.FileOptions = FileOptions.WriteThrough;
foptions.CommitOnWrite = true;
break;
}
case StoragePerformance.LogFileInCache:
case StoragePerformance.LogFileNoCache:
{
SetStorageCache(true);
if (LogFile == null)
{
_logFileName = _logFileName ?? Path.ChangeExtension(FileName, ".tlog");
SetLogFile(new TransactionLog <TKey, TValue>(
new TransactionLogOptions <TKey, TValue>(_logFileName, KeySerializer, ValueSerializer)
{
FileOptions = StoragePerformance == StoragePerformance.LogFileNoCache
? FileOptions.WriteThrough : FileOptions.None,
}
));
}
break;
}
default:
throw new InvalidConfigurationValueException("DurabilityProtection", "The configuration option is not valid.");
}
return(new BTreeFileStoreV2(foptions));
}
