/// <summary>
/// Update given cow
/// </summary>
public void Update (CowModel cow)
{
if (disposed) {
throw new ObjectDisposedException ("CowDatabase");
}
throw new NotImplementedException ();
}
/// <summary>
/// Update given cow
/// </summary>
public void Update(CowModel cow)
{
if (disposed)
{
throw new ObjectDisposedException("CowDatabase");
}
throw new NotImplementedException();
}
/// <summary>
/// Insert a new cow entry into our cow database
/// </summary>
public void Insert (CowModel cow)
{
if (disposed) {
throw new ObjectDisposedException ("CowDatabase");
}
// Serialize the cow and insert it
var recordId = this.cowRecords.Create (this.cowSerializer.Serialize(cow));
// Primary index
this.primaryIndex.Insert (cow.Id, recordId);
// Secondary index
this.secondaryIndex.Insert (new Tuple<string, int>(cow.Breed, cow.Age), recordId);
}
/// <summary>
/// Insert a new cow entry into our cow database
/// </summary>
public void Insert(CowModel cow)
{
if (disposed)
{
throw new ObjectDisposedException("CowDatabase");
}
// Serialize the cow and insert it
var recordId = this.cowRecords.Create(this.cowSerializer.Serialize(cow));
// Primary index
this.primaryIndex.Insert(cow.Id, recordId);
// Secondary index
this.secondaryIndex.Insert(new Tuple <string, int>(cow.Breed, cow.Age), recordId);
}
public CowModel Deserializer(byte[] data)
{
var cowModel = new CowModel();
// Read id
cowModel.Id = BufferHelper.ReadBufferGuid(data, 0);
// Read breed
var breedLength = BufferHelper.ReadBufferInt32(data, 16);
if (breedLength < 0 || breedLength > (16 * 1024))
{
throw new Exception("Invalid string length: " + breedLength);
}
cowModel.Breed = System.Text.Encoding.UTF8.GetString(data, 16 + 4, breedLength);
// Read name
var nameLength = BufferHelper.ReadBufferInt32(data, 16 + 4 + breedLength);
if (nameLength < 0 || nameLength > (16 * 1024))
{
throw new Exception("Invalid string length: " + nameLength);
}
cowModel.Name = System.Text.Encoding.UTF8.GetString(data, 16 + 4 + breedLength + 4, nameLength);
// Read age
cowModel.Age = BufferHelper.ReadBufferInt32(data, 16 + 4 + breedLength + 4 + nameLength);
// Read DNA data
var dnaLength = BufferHelper.ReadBufferInt32(data, 16 + 4 + breedLength + 4 + nameLength + 4);
if (dnaLength < 0 || dnaLength > (64 * 1024))
{
throw new Exception("Invalid DNA data length: " + dnaLength);
}
cowModel.DnaData = new byte[dnaLength];
Buffer.BlockCopy(src: data, srcOffset: 16 + 4 + breedLength + 4 + nameLength + 4 + 4, dst: cowModel.DnaData, dstOffset: 0, count: cowModel.DnaData.Length);
// Return constructed model
return(cowModel);
}
/// <summary>
/// Delete specified cow from our database
/// </summary>
public void Delete(CowModel cow)
{
throw new NotImplementedException();
}
public byte[] Serialize(CowModel cow)
{
var breedBytes = System.Text.Encoding.UTF8.GetBytes(cow.Breed);
var nameBytes = System.Text.Encoding.UTF8.GetBytes(cow.Breed);
var cowData = new byte[
16 + // 16 bytes for Guid id
4 + // 4 bytes indicate the length of `breed` string
breedBytes.Length + // n bytes for breed string
4 + // 4 bytes indicate the length of the `name` string
nameBytes.Length + // z bytes for name
4 + // 4 bytes for age
4 + // 4 bytes indicate length of DNA data
cow.DnaData.Length // y bytes of DNA data
];
// Id
Buffer.BlockCopy(
src: cow.Id.ToByteArray(),
srcOffset: 0,
dst: cowData,
dstOffset: 0,
count: 16
);
// Breed
Buffer.BlockCopy(
src: LittleEndianByteOrder.GetBytes((int)breedBytes.Length),
srcOffset: 0,
dst: cowData,
dstOffset: 16,
count: 4
);
Buffer.BlockCopy(
src: breedBytes,
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4,
count: breedBytes.Length
);
// Name
Buffer.BlockCopy(
src: LittleEndianByteOrder.GetBytes((int)nameBytes.Length),
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length,
count: 4
);
Buffer.BlockCopy(
src: nameBytes,
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4,
count: nameBytes.Length
);
// Age
Buffer.BlockCopy(
src: LittleEndianByteOrder.GetBytes((int)cow.Age),
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4 + nameBytes.Length,
count: 4
);
// DNA
Buffer.BlockCopy(
src: LittleEndianByteOrder.GetBytes(cow.DnaData.Length),
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4 + nameBytes.Length + 4,
count: 4
);
Buffer.BlockCopy(
src: cow.DnaData,
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4 + nameBytes.Length + 4 + 4,
count: cow.DnaData.Length
);
return(cowData);
}
public byte[] Serialize (CowModel cow)
{
var breedBytes = System.Text.Encoding.UTF8.GetBytes (cow.Breed);
var nameBytes = System.Text.Encoding.UTF8.GetBytes (cow.Breed);
var cowData = new byte[
16 + // 16 bytes for Guid id
4 + // 4 bytes indicate the length of `breed` string
breedBytes.Length + // n bytes for breed string
4 + // 4 bytes indicate the length of the `name` string
nameBytes.Length + // z bytes for name
4 + // 4 bytes for age
4 + // 4 bytes indicate length of DNA data
cow.DnaData.Length // y bytes of DNA data
];
// Id
Buffer.BlockCopy (
src: cow.Id.ToByteArray(),
srcOffset: 0,
dst: cowData,
dstOffset: 0,
count: 16
);
// Breed
Buffer.BlockCopy (
src: LittleEndianByteOrder.GetBytes((int)breedBytes.Length),
srcOffset: 0,
dst: cowData,
dstOffset: 16,
count: 4
);
Buffer.BlockCopy (
src: breedBytes,
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4,
count: breedBytes.Length
);
// Name
Buffer.BlockCopy (
src: LittleEndianByteOrder.GetBytes((int)nameBytes.Length),
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length,
count: 4
);
Buffer.BlockCopy (
src: nameBytes,
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4,
count: nameBytes.Length
);
// Age
Buffer.BlockCopy (
src: LittleEndianByteOrder.GetBytes((int)cow.Age),
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4 + nameBytes.Length,
count: 4
);
// DNA
Buffer.BlockCopy (
src: LittleEndianByteOrder.GetBytes(cow.DnaData.Length),
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4 + nameBytes.Length + 4,
count: 4
);
Buffer.BlockCopy (
src: cow.DnaData,
srcOffset: 0,
dst: cowData,
dstOffset: 16 + 4 + breedBytes.Length + 4 + nameBytes.Length + 4 + 4,
count: cow.DnaData.Length
);
return cowData;
}
public CowModel Deserializer (byte[] data)
{
var cowModel = new CowModel ();
// Read id
cowModel.Id = BufferHelper.ReadBufferGuid (data, 0);
// Read breed
var breedLength = BufferHelper.ReadBufferInt32 (data, 16);
if (breedLength < 0 || breedLength > (16*1024)) {
throw new Exception ("Invalid string length: " + breedLength);
}
cowModel.Breed = System.Text.Encoding.UTF8.GetString (data, 16 + 4, breedLength);
// Read name
var nameLength = BufferHelper.ReadBufferInt32 (data, 16 + 4 + breedLength);
if (nameLength < 0 || nameLength > (16*1024)) {
throw new Exception ("Invalid string length: " + nameLength);
}
cowModel.Name = System.Text.Encoding.UTF8.GetString (data, 16 + 4 + breedLength + 4, nameLength);
// Read age
cowModel.Age = BufferHelper.ReadBufferInt32 (data, 16 + 4 + breedLength + 4 + nameLength);
// Read DNA data
var dnaLength = BufferHelper.ReadBufferInt32 (data, 16 + 4 + breedLength + 4 + nameLength + 4);
if (dnaLength < 0 || dnaLength > (64*1024)) {
throw new Exception ("Invalid DNA data length: " + dnaLength);
}
cowModel.DnaData = new byte[dnaLength];
Buffer.BlockCopy (src: data, srcOffset: 16 + 4 + breedLength + 4 + nameLength + 4 + 4, dst: cowModel.DnaData, dstOffset: 0, count: cowModel.DnaData.Length);
// Return constructed model
return cowModel;
}
/// <summary>
/// Delete specified cow from our database
/// </summary>
public void Delete (CowModel cow)
{
throw new NotImplementedException ();
}