public void Load(WTree tree, BinaryReader reader)
{
int count = (int)CountCompression.Deserialize(reader);
Capacity = count;
NodeType nodeType = (NodeType)reader.ReadByte();
for (int i = 0; i < count; i++)
{
//read fullKey
var locator = tree.DeserializeLocator(reader);
var key = locator.KeyPersist.Read(reader);
var fullKey = new FullKey(locator, key);
//read branch info
long nodeID = reader.ReadInt64();
NodeState nodeState = (NodeState)reader.ReadInt32();
Branch branch = new Branch(tree, nodeType, nodeID);
branch.NodeState = nodeState;
branch.Cache.Load(tree, reader);
Add(new KeyValuePair <FullKey, Branch>(fullKey, branch));
}
}
public void Store(WTree tree, BinaryWriter writer)
{
CountCompression.Serialize(writer, checked ((ulong)Count));
Debug.Assert(Count > 0);
writer.Write((byte)this[0].Value.NodeType);
for (int i = 0; i < Count; i++)
{
var kv = this[i];
FullKey fullkey = kv.Key;
Branch branch = kv.Value;
//lock (branch)
//{
//}
//write locator
tree.SerializeLocator(writer, fullkey.Locator);
fullkey.Locator.KeyPersist.Write(writer, fullkey.Key);
//write branch info
writer.Write(branch.NodeHandle);
writer.Write((int)branch.NodeState);
branch.Cache.Store(tree, writer);
}
}
public static void Deserialize(WTree tree, Stream stream)
{
BinaryReader reader = new BinaryReader(stream);
int version = reader.ReadInt32();
switch (version)
{
case 0:
{
tree.GlobalVersion = reader.ReadInt64();
tree.RootBranch.NodeHandle = reader.ReadInt64();
tree.RootBranch.NodeType = (NodeType)reader.ReadByte();
tree.Depth = reader.ReadInt32();
tree.INTERNAL_NODE_MAX_OPERATIONS_IN_ROOT = reader.ReadInt32();
tree.INTERNAL_NODE_MIN_BRANCHES = reader.ReadInt32();
tree.INTERNAL_NODE_MAX_BRANCHES = reader.ReadInt32();
tree.INTERNAL_NODE_MIN_OPERATIONS = reader.ReadInt32();
tree.INTERNAL_NODE_MAX_OPERATIONS = reader.ReadInt32();
}
break;
case 1: //from 4.0.3
{
tree.GlobalVersion = reader.ReadInt64();
tree.RootBranch.NodeHandle = reader.ReadInt64();
tree.RootBranch.NodeType = (NodeType)reader.ReadByte();
tree.Depth = reader.ReadInt32();
tree.INTERNAL_NODE_MIN_BRANCHES = reader.ReadInt32();
tree.INTERNAL_NODE_MAX_BRANCHES = reader.ReadInt32();
tree.INTERNAL_NODE_MAX_OPERATIONS_IN_ROOT = reader.ReadInt32();
tree.INTERNAL_NODE_MIN_OPERATIONS = reader.ReadInt32();
tree.INTERNAL_NODE_MAX_OPERATIONS = reader.ReadInt32();
tree.LEAF_NODE_MIN_RECORDS = reader.ReadInt32();
tree.LEAF_NODE_MAX_RECORDS = reader.ReadInt32();
}
break;
default:
throw new NotSupportedException("Unknown WTree header version.");
}
}
public void Load(WTree tree, BinaryReader reader)
{
int count = reader.ReadInt32();
if (count == 0)
{
return;
}
for (int i = 0; i < count; i++)
{
//read locator
var locator = tree.DeserializeLocator(reader);
//read operations
var operations = locator.OperationsPersist.Read(reader);
Add(locator, operations);
}
}
public static void Serialize(WTree tree, Stream stream)
{
BinaryWriter writer = new BinaryWriter(stream);
const int VERSION = 1;
writer.Write(VERSION);
switch (VERSION)
{
//case 0:
// {
// writer.Write(tree.GlobalVersion);
// writer.Write(tree.RootBranch.NodeHandle);
// writer.Write((byte)tree.RootBranch.NodeType);
// writer.Write(tree.Depth);
// writer.Write(tree.INTERNAL_NODE_MAX_OPERATIONS_IN_ROOT);
// writer.Write(tree.INTERNAL_NODE_MIN_BRANCHES);
// writer.Write(tree.INTERNAL_NODE_MAX_BRANCHES);
// writer.Write(tree.INTERNAL_NODE_MIN_OPERATIONS);
// writer.Write(tree.INTERNAL_NODE_MAX_OPERATIONS);
// }
// break;
case 1:
{
writer.Write(tree.GlobalVersion);
writer.Write(tree.RootBranch.NodeHandle);
writer.Write((byte)tree.RootBranch.NodeType);
writer.Write(tree.Depth);
writer.Write(tree.INTERNAL_NODE_MIN_BRANCHES);
writer.Write(tree.INTERNAL_NODE_MAX_BRANCHES);
writer.Write(tree.INTERNAL_NODE_MAX_OPERATIONS_IN_ROOT);
writer.Write(tree.INTERNAL_NODE_MIN_OPERATIONS);
writer.Write(tree.INTERNAL_NODE_MAX_OPERATIONS);
writer.Write(tree.LEAF_NODE_MIN_RECORDS);
writer.Write(tree.LEAF_NODE_MAX_RECORDS);
}
break;
}
}
public void Store(WTree tree, BinaryWriter writer)
{
writer.Write(Count);
if (Count == 0)
{
return;
}
//write cache
foreach (var kv in this)
{
var locator = kv.Key;
var operations = kv.Value;
//write locator
tree.SerializeLocator(writer, locator);
//write operations
locator.OperationsPersist.Write(writer, operations);
}
}
/// <summary>
/// on brand new branch
/// </summary>
public Branch(WTree tree, NodeType nodeType)
: this(tree, nodeType, tree.heap.ObtainNewHandle())
{
node = WTree.Node.Create(this);
}
/// <summary>
/// on load
/// </summary>
public Branch(WTree tree, NodeType nodeType, long nodeHandle)
{
Tree = tree;
NodeType = nodeType;
NodeHandle = nodeHandle;
}