/// <summary>
/// Adds all of the items in the stream to this tree. Skips any dulpicate entries.
/// </summary>
/// <param name="stream">the stream to add.</param>
public void TryAddRange(TreeStream <TKey, TValue> stream)
{
//TKey key = new TKey();
//TValue value = new TValue();
//while (stream.Read(key, value))
//{
// TryAdd(key, value);
//}
//return;
InsertStreamHelper <TKey, TValue> helper = new InsertStreamHelper <TKey, TValue>(stream);
LeafStorage.TryInsertSequentialStream(helper);
while (helper.IsValid)
{
if (helper.IsKVP1)
{
LeafStorage.TryInsert(helper.Key1, helper.Value1);
}
else
{
LeafStorage.TryInsert(helper.Key2, helper.Value2);
}
helper.NextDoNotCheckSequential();
}
if (IsDirty && AutoFlush)
{
m_header.SaveHeader(Stream);
}
}
public virtual void TryInsertSequentialStream(InsertStreamHelper <TKey, TValue> stream)
{
//First check to see if the sequentail insertion is valid.
bool isFull;
TKey key = new TKey();
TValue value = new TValue();
//Exit if stream is not valid or not sequentail.
if (!stream.IsValid || !stream.IsStillSequential)
{
return;
}
NavigateToNode(stream.Key);
//Exit if the node holding this key is not the far right node.
if (!IsRightSiblingIndexNull)
{
return;
}
//Verify that this next key to be inserted is greater than the last record in this node
if (RecordCount > 0)
{
Read(RecordCount - 1, key, value);
if (key.IsGreaterThanOrEqualTo(stream.Key))
{
return;
}
}
TryAgain:
AppendSequentialStream(stream, out isFull);
if (!stream.IsValid || !stream.IsStillSequential || !IsRightSiblingIndexNull)
{
return;
}
if (isFull)
{
NewNodeThenInsert(stream.Key, stream.Value);
stream.Next();
goto TryAgain;
}
}
protected override void AppendSequentialStream(InsertStreamHelper <TKey, TValue> stream, out bool isFull)
{
//isFull = false;
//return;
//ToDo: Figure out why this code does not work.
if (RecordCount >= m_maxRecordsPerNode)
{
isFull = true;
return;
}
int recordsAdded = 0;
int additionalValidBytes = 0;
byte *writePointer = GetWritePointerAfterHeader();
int offset = RecordCount * KeyValueSize;
TryAgain:
if (!stream.IsValid || !stream.IsStillSequential)
{
isFull = false;
IncrementRecordCounts(recordsAdded, additionalValidBytes);
return;
}
if (stream.IsKVP1)
{
//Key1,Value1 are the current record
if (RemainingBytes - additionalValidBytes < KeyValueSize)
{
isFull = true;
IncrementRecordCounts(recordsAdded, additionalValidBytes);
return;
}
stream.Key1.Write(writePointer + offset);
stream.Value1.Write(writePointer + offset + KeySize);
additionalValidBytes += KeyValueSize;
recordsAdded++;
offset += KeyValueSize;
//Inlined stream.Next()
stream.IsValid = stream.Stream.Read(stream.Key2, stream.Value2);
stream.IsStillSequential = stream.Key1.IsLessThan(stream.Key2);
stream.IsKVP1 = false;
//End Inlined
goto TryAgain;
}
else
{
//Key2,Value2 are the current record
if (RemainingBytes - additionalValidBytes < KeyValueSize)
{
isFull = true;
IncrementRecordCounts(recordsAdded, additionalValidBytes);
return;
}
stream.Key2.Write(writePointer + offset);
stream.Value2.Write(writePointer + offset + KeySize);
additionalValidBytes += KeyValueSize;
recordsAdded++;
offset += KeyValueSize;
//Inlined stream.Next()
stream.IsValid = stream.Stream.Read(stream.Key1, stream.Value1);
stream.IsStillSequential = stream.Key2.IsLessThan(stream.Key1);
stream.IsKVP1 = true;
//End Inlined
goto TryAgain;
}
}
/// <summary>
/// Requests that the current stream is inserted into the tree. Sequential insertion can only occur while the stream
/// is in order and is entirely past the end of the tree.
/// </summary>
/// <param name="stream">the stream data to insert</param>
/// <param name="isFull">if returning from this function while the node is not yet full, this means the stream
/// can no longer be inserted sequentially and we must break out to the root and insert one at a time.</param>
protected override void AppendSequentialStream(InsertStreamHelper <TKey, TValue> stream, out bool isFull)
{
int recordsAdded = 0;
int additionalValidBytes = 0;
byte *writePointer = GetWritePointer();
fixed(byte *buffer = m_buffer1)
{
SeekTo(RecordCount);
if (RecordCount > 0)
{
m_currentKey.CopyTo(stream.PrevKey);
m_currentValue.CopyTo(stream.PrevValue);
}
else
{
stream.PrevKey.Clear();
stream.PrevValue.Clear();
}
TryAgain:
if (!stream.IsValid || !stream.IsStillSequential)
{
isFull = false;
IncrementRecordCounts(recordsAdded, additionalValidBytes);
ClearNodeCache();
return;
}
int length;
if (stream.IsKVP1)
{
//Key1,Value1 are the current record
if (RemainingBytes - additionalValidBytes < m_maximumStorageSize)
{
length = EncodeRecord(buffer, stream.Key2, stream.Value2, stream.Key1, stream.Value1);
if (RemainingBytes - additionalValidBytes < length)
{
isFull = true;
IncrementRecordCounts(recordsAdded, additionalValidBytes);
ClearNodeCache();
return;
}
}
length = EncodeRecord(writePointer + m_nextOffset, stream.Key2, stream.Value2, stream.Key1, stream.Value1);
additionalValidBytes += length;
recordsAdded++;
m_currentOffset = m_nextOffset;
m_nextOffset = m_currentOffset + length;
//Inlined stream.Next()
stream.IsValid = stream.Stream.Read(stream.Key2, stream.Value2);
stream.IsStillSequential = stream.Key1.IsLessThan(stream.Key2);
stream.IsKVP1 = false;
//End Inlined
goto TryAgain;
}
else
{
//Key2,Value2 are the current record
if (RemainingBytes - additionalValidBytes < m_maximumStorageSize)
{
length = EncodeRecord(buffer, stream.Key1, stream.Value1, stream.Key2, stream.Value2);
if (RemainingBytes - additionalValidBytes < length)
{
isFull = true;
IncrementRecordCounts(recordsAdded, additionalValidBytes);
ClearNodeCache();
return;
}
}
length = EncodeRecord(writePointer + m_nextOffset, stream.Key1, stream.Value1, stream.Key2, stream.Value2);
additionalValidBytes += length;
recordsAdded++;
m_currentOffset = m_nextOffset;
m_nextOffset = m_currentOffset + length;
//Inlined stream.Next()
stream.IsValid = stream.Stream.Read(stream.Key1, stream.Value1);
stream.IsStillSequential = stream.Key2.IsLessThan(stream.Key1);
stream.IsKVP1 = true;
//End Inlined
goto TryAgain;
}
}
}