public DateTime GetObject(byte[] buffer, int offset, int count)
{
long ticks = Helper.ToInt64(buffer, offset);
return(new DateTime(ticks));
}
public long GetObject(byte[] buffer, int offset, int count)
{
return(Helper.ToInt64(buffer, offset));
}
public byte[] GetBytes(DateTime obj)
{
return(Helper.GetBytes(obj.Ticks, false));
}
public uint GetObject(byte[] buffer, int offset, int count)
{
return((uint)Helper.ToInt32(buffer, offset));
}
public byte[] GetBytes(long obj)
{
return(Helper.GetBytes(obj, false));
}
public string GetObject(byte[] buffer, int offset, int count)
{
return(Helper.GetString(buffer, offset, (short)count));
}
public byte[] GetBytes(string obj)
{
return(Helper.GetBytes(obj));
}
public short GetObject(byte[] buffer, int offset, int count)
{
return(Helper.ToInt16(buffer, offset));
}
public byte[] GetBytes(short obj)
{
return(Helper.GetBytes(obj, false));
}
internal void SavePage(Page <T> node)
{
lock (_fileLock)
{
int pnum = node.DiskPageNumber;
if (pnum > _LastPageNumber)
{
throw new Exception("should not be here: page out of bounds");
}
SeekPage(pnum);
byte[] page = new byte[_PageLength];
byte[] blockheader = CreateBlockHeader(0, (ushort)node.tree.Count, node.RightPageNumber);
Buffer.BlockCopy(blockheader, 0, page, 0, blockheader.Length);
int index = blockheader.Length;
int i = 0;
byte[] b = null;
T[] keys = node.tree.Keys();
Array.Sort(keys); // sort keys on save for read performance
int blocknum = 0;
if (_externalStrings)
{
// free old blocks
if (node.allocblocks != null)
{
_strings.FreeBlocks(node.allocblocks);
}
blocknum = _strings.SaveData(node.DiskPageNumber.ToString(), fastBinaryJSON.BJSON.ToBJSON(keys));
}
// node children
foreach (var kp in keys)
{
var val = node.tree[kp];
int idx = index + _rowSize * i;
// key bytes
byte[] kk;
byte size;
if (_externalStrings == false)
{
kk = _T.GetBytes(kp);
size = (byte)kk.Length;
if (size > _maxKeySize)
{
size = _maxKeySize;
}
}
else
{
kk = new byte[4];
Buffer.BlockCopy(Helper.GetBytes(blocknum, false), 0, kk, 0, 4);
size = 4;
}
// key size = 1 byte
page[idx] = size;
Buffer.BlockCopy(kk, 0, page, idx + 1, page[idx]);
// offset = 4 bytes
b = Helper.GetBytes(val.RecordNumber, false);
Buffer.BlockCopy(b, 0, page, idx + 1 + _maxKeySize, b.Length);
// duplicatepage = 4 bytes
b = Helper.GetBytes(val.DuplicateBitmapNumber, false);
Buffer.BlockCopy(b, 0, page, idx + 1 + _maxKeySize + 4, b.Length);
i++;
}
_file.Write(page, 0, page.Length);
}
}
