public TransactionalStorage(string path)
{
if (Directory.Exists(path) == false)
Directory.CreateDirectory(path);
storageFile = Path.Combine(path, "storage.raven");
writer = new FileStream(storageFile,
FileMode.OpenOrCreate,
FileAccess.ReadWrite,
FileShare.Delete | FileShare.Read,
16 * 1024,
FileOptions.WriteThrough | FileOptions.SequentialScan);
try
{
binaryWriter = new BinaryWriterWith7BitEncoding(writer);
isNewDatabase = writer.Length == 0;
if (isNewDatabase)
CreateFromScratch();
TryReadingExistingFile();
}
catch (Exception)
{
Dispose();
throw;
}
}
public Tree(Stream reader, Stream writer, StartMode mode)
{
this.reader = reader;
this.writer = writer;
binaryReader = new BinaryReaderWith7BitEncoding(this.reader);
binaryWriter = new BinaryWriterWith7BitEncoding(this.writer);
root = mode == StartMode.Create
? new TreeNode(null, null, null, null, ReadNode, WriteNodeLazy)
: ReadNode(new StreamPosition(reader.Position, null));
}
public Tree(Stream reader, Stream writer, StartMode mode)
{
this.reader = reader;
this.writer = writer;
binaryReader = new BinaryReaderWith7BitEncoding(this.reader);
binaryWriter = new BinaryWriterWith7BitEncoding(this.writer);
root = mode == StartMode.Create
? new TreeNode(null, null, null, null, ReadNode, WriteNodeLazy)
: ReadNode(new StreamPosition(reader.Position, null));
}
public void CanEncodeUsing7BitInt64()
{
var buffer = new byte[1024];
for (long i = 0; i < 64*1024; i++)
{
var bw = new BinaryWriterWith7BitEncoding(new MemoryStream(buffer));
bw.Write7BitEncodedInt64(i);
var br = new BinaryReaderWith7BitEncoding(new MemoryStream(buffer));
Assert.Equal(i, br.Read7BitEncodedInt64());
}
}
public Bag(Stream reader, Stream writer, StartMode mode)
{
this.reader = reader;
this.writer = writer;
binaryReader = new BinaryReaderWith7BitEncoding(reader);
binaryWriter = new BinaryWriterWith7BitEncoding(writer);
if (mode != StartMode.Open)
{
return;
}
current = ReadItem(reader.Position);
}
public Queue(Stream reader, Stream writer, StartMode mode)
{
this.reader = reader;
this.writer = writer;
binaryReader = new BinaryReaderWith7BitEncoding(reader);
binaryWriter = new BinaryWriterWith7BitEncoding(writer);
if (mode == StartMode.Open)
{
currentId = binaryReader.Read7BitEncodedInt64();
var treePos = binaryReader.Read7BitEncodedInt64();
reader.Position = treePos;
}
tree = new Tree(reader, writer, mode);
}
public Queue(Stream reader, Stream writer, StartMode mode)
{
this.reader = reader;
this.writer = writer;
binaryReader = new BinaryReaderWith7BitEncoding(reader);
binaryWriter = new BinaryWriterWith7BitEncoding(writer);
if(mode == StartMode.Open)
{
currentId = binaryReader.Read7BitEncodedInt64();
var treePos = binaryReader.Read7BitEncodedInt64();
reader.Position = treePos;
}
tree = new Tree(reader, writer, mode);
}