public void FetchInternalEntityIdIntoChangeBuffer(DriverChangeBuffer changeBuffer, RequestExecutionContext context)
{
if (changeBuffer.InternalEntityId == null)
{
changeBuffer.InternalEntityId = new byte[context.DriverOutputBuffer.InternalEntityId.Length];
}
ReadPrimaryKey(changeBuffer);
}
public void FetchInternalEntityIdIntoChangeBuffer(DriverChangeBuffer changeBuffer,
RequestExecutionContext context)
{
changeBuffer.InternalEntityId = context.DriverOutputBuffer.InternalEntityId;
}
/// <summary>
/// Ctr.
/// </summary>
public RamDriverChangeset(RamDriver driver, DriverChangeBuffer changeBuffer, bool isBulk, DocumentDataContainer documentContainer, ColumnDataBase[] columnStores)
{
if (driver == null)
{
throw new ArgumentNullException("driver");
}
if (changeBuffer == null)
{
throw new ArgumentNullException("changeBuffer");
}
if (documentContainer == null)
{
throw new ArgumentNullException("documentContainer");
}
Driver = driver;
ChangeBuffer = changeBuffer;
IsBulk = isBulk;
ColumnStores = columnStores;
DocumentContainer = documentContainer;
}
private void UpdateAtPosition(RamDriverChangeset changesetRec, DriverChangeBuffer change, int docIndex)
{
var changeData = change.Data;
for (var ordinal = 0; ordinal < change.Fields.Length; ordinal++)
{
var colStore = changesetRec.ColumnStores[ordinal];
if (BitVector.Get(changeData.NotNulls, ordinal))
{
colStore.NotNulls.SafeSet(docIndex);
var indexInArray = changeData.GetIndexInArray(ordinal);
colStore.AssignFromDriverRow(docIndex, changeData, indexInArray);
}
else
{
colStore.NotNulls.SafeClear(docIndex);
}
}
}
public long CreateChangeset(DriverChangeBuffer changeBuffer, bool isBulk)
{
CheckInitialized();
if (changeBuffer == null)
{
throw new ArgumentNullException("changeBuffer");
}
var key = Interlocked.Increment(ref m_lastChangesetHandle);
ColumnDataBase[] columnStores = null;
var documentContainer = m_dataContainer.RequireDocumentContainer(changeBuffer.TargetEntity);
if (changeBuffer.Fields != null && changeBuffer.Fields.Length > 0)
{
columnStores = new ColumnDataBase[changeBuffer.Fields.Length];
for (var i = 0; i < changeBuffer.Fields.Length; i++)
{
var field = changeBuffer.Fields[i];
columnStores[i] = documentContainer.RequireColumnStore(field.FieldId);
}
}
var changesetRec = new RamDriverChangeset(this, changeBuffer, isBulk, documentContainer, columnStores);
documentContainer.StructureLock.EnterReadLock();
try
{
if (!m_changesets.TryAdd(key, changesetRec))
{
throw new Exception("Internal error");
}
return key;
}
catch
{
documentContainer.StructureLock.ExitReadLock();
throw;
}
}
public void FetchInternalEntityIdIntoChangeBuffer(DriverChangeBuffer changeBuffer, RequestExecutionContext context)
{
// reference copy is safe because storage driver is responsible for copying this value
// when it reads the change buffer
changeBuffer.InternalEntityId = context.DriverOutputBuffer.InternalEntityId;
}
private void ReadPrimaryKey(DriverChangeBuffer changeBuffer)
{
if (!BitVector.Get(changeBuffer.Data.NotNulls, 0))
{
throw new Exception("Primary key value may not be null");
}
var indexInArray = changeBuffer.Data.FieldArrayIndexes[0];
var internalEntityId = changeBuffer.InternalEntityId;
switch (m_pkFieldType)
{
case DriverRowData.DataTypeRepresentation.ByteArray:
{
var value = changeBuffer.Data.BinaryData[indexInArray];
if (value.Length == 0 || value.Length > byte.MaxValue)
{
throw new Exception("Primary key length must be within 1 to 255 bytes");
}
Buffer.BlockCopy(value.Data, 0, internalEntityId, 1, value.Length - 1);
internalEntityId[0] = (byte)(value.Length - 1);
}
break;
case DriverRowData.DataTypeRepresentation.String:
{
var value = changeBuffer.Data.StringData[indexInArray];
if (value.Length == 0 || value.Length > byte.MaxValue)
{
throw new Exception("Primary key length must be within 1 to 255 characters");
}
var bytelen = Encoding.UTF8.GetByteCount(value);
if (bytelen == 0 || bytelen > byte.MaxValue)
{
throw new Exception("UTF conversion must produce from 1 to 255 bytes");
}
internalEntityId[0] = (byte)Encoding.UTF8.GetBytes(value, 0, value.Length, internalEntityId, 1);
}
break;
case DriverRowData.DataTypeRepresentation.Value8Bytes:
{
var value = changeBuffer.Data.ValueData8Bytes[indexInArray].AsUInt64;
var pos = 1;
while (value > 0)
{
internalEntityId[pos] = (byte)value;
value >>= 8;
pos++;
}
internalEntityId[0] = (byte)(pos - 1);
}
break;
case DriverRowData.DataTypeRepresentation.Value16Bytes:
{
var value = (UInt64)changeBuffer.Data.ValueData16Bytes[indexInArray].Lo;
var pos = 1;
while (value > 0)
{
internalEntityId[pos] = (byte)value;
value >>= 8;
pos++;
}
value = (UInt64)changeBuffer.Data.ValueData16Bytes[indexInArray].Hi;
while (value > 0)
{
internalEntityId[pos] = (byte)value;
value >>= 8;
pos++;
}
internalEntityId[0] = (byte)(pos - 1);
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}