public override void ReadFromPhysical(byte[] buffer, int offset)
{
_table.Truncate(Manager);
Streams.IConveyor int32Conveyor = Manager.GetConveyor(Manager.DataTypes.SystemInteger);
if (buffer[offset] != 0)
{
offset++;
int rowSize;
int count = (int)int32Conveyor.Read(buffer, offset);
for (int index = 0; index < count; index++)
{
rowSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
using (IRow row = (IRow)DataValue.FromPhysical(Manager, _table.RowType, buffer, offset))
{
_table.Insert(Manager, row);
}
offset += rowSize;
}
}
}
public override void ReadFromPhysical(byte[] buffer, int offset)
{
// Clear current value
if (ValuesOwned && !IsNative && (StreamID != StreamID.Null))
{
Manager.StreamManager.Deallocate(StreamID);
}
// Read scalar header
byte header = buffer[offset];
offset++;
if ((header & 1) != 0) // if not nil
{
if ((header & 2) != 0)
{
if (DataType.IsCompound)
{
using (IRow row = (IRow)DataValue.FromPhysical(Manager, DataType.CompoundRowType, buffer, offset))
{
Value = row.AsNative;
row.ValuesOwned = false;
}
}
else
{
Streams.IConveyor conveyor = Manager.GetConveyor(DataType);
if (conveyor.IsStreaming)
{
Stream stream = new MemoryStream(buffer, offset, buffer.Length - offset, false, true);
Value = conveyor.Read(stream);
stream.Close();
}
else
{
Value = conveyor.Read(buffer, offset);
}
}
}
else
{
if ((header & 4) != 0) // if expanded form
{
Value = Manager.StreamManager.Allocate();
Stream stream = Manager.StreamManager.Open(StreamID, LockMode.Exclusive);
stream.Write(buffer, offset, buffer.Length - offset);
stream.Close();
}
else
{
Value = StreamID.Read(buffer, offset);
}
}
}
else
{
if ((header & 2) != 0)
{
Value = null;
}
else
{
Value = StreamID.Null;
}
}
}
public override void ReadFromPhysical(byte[] buffer, int offset)
{
ClearValues(); // Clear the current value of the row
if (buffer[offset] == 0)
{
_row = null;
}
else
{
_row = new NativeRow(DataType.Columns.Count);
offset++;
bool expandStreams = buffer[offset] != 0; // Read the exapnded streams indicator
offset++;
#if USEDATATYPESINNATIVEROW
Streams.IConveyor stringConveyor = Manager.GetConveyor(Manager.DataTypes.SystemString);
string dataTypeName;
Schema.IDataType dataType;
#endif
Streams.IConveyor int64Conveyor = Manager.GetConveyor(Manager.DataTypes.SystemLong);
Streams.IConveyor int32Conveyor = Manager.GetConveyor(Manager.DataTypes.SystemInteger);
Stream stream;
StreamID streamID;
int elementSize;
Schema.IScalarType scalarType;
Streams.IConveyor conveyor;
for (int index = 0; index < DataType.Columns.Count; index++)
{
byte valueIndicator = buffer[offset];
offset++;
switch (valueIndicator)
{
case 0: // native nil
#if USEDATATYPESINNATIVEROW
_row.DataTypes[index] = DataType.Columns[index].DataType;
#endif
_row.Values[index] = null;
break;
case 1: // non-native nil
#if USEDATATYPESINNATIVEROW
_row.DataTypes[index] = DataType.Columns[index].DataType;
#endif
_row.Values[index] = StreamID.Null;
break;
case 2: // native standard value
scalarType = DataType.Columns[index].DataType as Schema.IScalarType;
if ((scalarType != null) && !scalarType.IsCompound)
{
conveyor = Manager.GetConveyor(scalarType);
if (conveyor.IsStreaming)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
stream = new MemoryStream(buffer, offset, elementSize, false, true);
#if USEDATATYPESINNATIVEROW
_row.DataTypes[index] = DataType.Columns[index].DataType;
#endif
_row.Values[index] = conveyor.Read(stream);
offset += elementSize;
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
#if USEDATATYPESINNATIVEROW
_row.DataTypes[index] = DataType.Columns[index].DataType;
#endif
_row.Values[index] = conveyor.Read(buffer, offset);
offset += elementSize;
}
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
#if USEDATATYPESINNATIVEROW
_row.DataTypes[index] = DataType.Columns[index].DataType;
#endif
using (IDataValue tempValue = DataValue.FromPhysical(Manager, DataType.Columns[index].DataType, buffer, offset))
{
_row.Values[index] = tempValue.AsNative;
tempValue.ValuesOwned = false;
}
offset += elementSize;
}
break;
case 3: // non-native standard value
scalarType = DataType.Columns[index].DataType as Schema.IScalarType;
if (scalarType != null)
{
if (expandStreams)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
streamID = Manager.StreamManager.Allocate();
stream = Manager.StreamManager.Open(streamID, LockMode.Exclusive);
stream.Write(buffer, offset, elementSize);
stream.Close();
#if USEDATATYPESINNATIVEROW
_row.DataTypes[index] = scalarType;
#endif
_row.Values[index] = streamID;
offset += elementSize;
}
else
{
#if USEDATATYPESINNATIVEROW
_row.DataTypes[index] = scalarType;
#endif
_row.Values[index] = new StreamID(Convert.ToUInt64(int64Conveyor.Read(buffer, offset)));
offset += sizeof(long);
}
}
else
{
// non-scalar values cannot be non-native
}
break;
case 4: // native specialized value
#if USEDATATYPESINNATIVEROW
dataTypeName = (string)stringConveyor.Read(buffer, offset);
dataType = Manager.CompileTypeSpecifier(dataTypeName);
offset += stringConveyor.GetSize(dataTypeName);
scalarType = dataType as Schema.IScalarType;
if ((scalarType != null) && !scalarType.IsCompound)
{
conveyor = Manager.GetConveyor(scalarType);
if (conveyor.IsStreaming)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
stream = new MemoryStream(buffer, offset, elementSize, false, true);
_row.DataTypes[index] = scalarType;
_row.Values[index] = conveyor.Read(stream);
offset += elementSize;
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
_row.DataTypes[index] = scalarType;
_row.Values[index] = conveyor.Read(buffer, offset);
offset += elementSize;
}
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
_row.DataTypes[index] = dataType;
using (IDataValue tempValue = DataValue.FromPhysical(Manager, dataType, buffer, offset))
{
_row.Values[index] = tempValue.AsNative;
tempValue.ValuesOwned = false;
}
offset += elementSize;
}
break;
#else
throw new NotSupportedException("Specialized data types in rows are not supported");
#endif
case 5: // non-native specialized value
#if USEDATATYPESINNATIVEROW
dataTypeName = (string)stringConveyor.Read(buffer, offset);
dataType = Manager.CompileTypeSpecifier(dataTypeName);
offset += stringConveyor.GetSize(dataTypeName);
scalarType = dataType as Schema.IScalarType;
if (scalarType != null)
{
if (expandStreams)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
streamID = Manager.StreamManager.Allocate();
stream = Manager.StreamManager.Open(streamID, LockMode.Exclusive);
stream.Write(buffer, offset, elementSize);
stream.Close();
_row.DataTypes[index] = scalarType;
_row.Values[index] = streamID;
offset += elementSize;
}
else
{
_row.DataTypes[index] = scalarType;
_row.Values[index] = new StreamID(Convert.ToUInt64(int64Conveyor.Read(buffer, offset)));
offset += sizeof(long);
}
}
else
{
// non-scalar values cannot be non-native
}
break;
#else
throw new NotSupportedException("Specialized data types in rows are not supported");
#endif
}
}
}
}
public override void ReadFromPhysical(byte[] buffer, int offset)
{
Clear(); // Clear the current value of the list
if (buffer[offset] == 0)
{
_list = null;
}
else
{
_list = new NativeList();
if (buffer[offset] != 0)
{
offset++;
bool expandStreams = buffer[offset] != 0; // Read the exapnded streams indicator
offset++;
Streams.IConveyor stringConveyor = null;
Streams.IConveyor int64Conveyor = Manager.GetConveyor(Manager.DataTypes.SystemLong);
Streams.IConveyor int32Conveyor = Manager.GetConveyor(Manager.DataTypes.SystemInteger);
int count = (int)int32Conveyor.Read(buffer, offset); // Read the number of elements in the list
offset += sizeof(int);
Stream stream;
StreamID streamID;
int elementSize;
string dataTypeName;
Schema.IDataType dataType;
Schema.IScalarType scalarType;
Streams.IConveyor conveyor;
for (int index = 0; index < count; index++)
{
byte valueIndicator = buffer[offset];
offset++;
switch (valueIndicator)
{
case 0: // native nil
_list.DataTypes.Add(DataType.ElementType);
_list.Values.Add(null);
break;
case 1: // non-native nil
_list.DataTypes.Add(DataType.ElementType);
_list.Values.Add(StreamID.Null);
break;
case 2: // native standard value
scalarType = DataType.ElementType as Schema.IScalarType;
if ((scalarType != null) && !scalarType.IsCompound)
{
conveyor = Manager.GetConveyor(scalarType);
if (conveyor.IsStreaming)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
stream = new MemoryStream(buffer, offset, elementSize, false, true);
_list.DataTypes.Add(DataType.ElementType);
_list.Values.Add(conveyor.Read(stream));
offset += elementSize;
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
_list.DataTypes.Add(DataType.ElementType);
_list.Values.Add(conveyor.Read(buffer, offset));
offset += elementSize;
}
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
_list.DataTypes.Add(DataType.ElementType);
using (IDataValue tempValue = DataValue.FromPhysical(Manager, DataType.ElementType, buffer, offset))
{
_list.Values.Add(tempValue.AsNative);
tempValue.ValuesOwned = false;
}
offset += elementSize;
}
break;
case 3: // non-native standard value
scalarType = DataType.ElementType as Schema.IScalarType;
if (scalarType != null)
{
if (expandStreams)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
streamID = Manager.StreamManager.Allocate();
stream = Manager.StreamManager.Open(streamID, LockMode.Exclusive);
stream.Write(buffer, offset, elementSize);
stream.Close();
_list.DataTypes.Add(scalarType);
_list.Values.Add(streamID);
offset += elementSize;
}
else
{
_list.DataTypes.Add(scalarType);
_list.Values.Add(int64Conveyor.Read(buffer, offset));
offset += sizeof(long);
}
}
else
{
// non-scalar values cannot be non-native
}
break;
case 4: // native specialized value
dataTypeName = (string)stringConveyor.Read(buffer, offset);
dataType = Manager.CompileTypeSpecifier(dataTypeName);
offset += stringConveyor.GetSize(dataTypeName);
scalarType = dataType as Schema.IScalarType;
if ((scalarType != null) && !scalarType.IsCompound)
{
conveyor = Manager.GetConveyor(scalarType);
if (conveyor.IsStreaming)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
stream = new MemoryStream(buffer, offset, elementSize, false, true);
_list.DataTypes.Add(scalarType);
_list.Values.Add(conveyor.Read(stream));
offset += elementSize;
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
_list.DataTypes.Add(DataType.ElementType);
_list.Values.Add(conveyor.Read(buffer, offset));
offset += elementSize;
}
}
else
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
_list.DataTypes.Add(dataType);
using (IDataValue tempValue = DataValue.FromPhysical(Manager, dataType, buffer, offset))
{
_list.Values.Add(tempValue.AsNative);
tempValue.ValuesOwned = false;
}
offset += elementSize;
}
break;
case 5: // non-native specialized value
dataTypeName = (string)stringConveyor.Read(buffer, offset);
dataType = Manager.CompileTypeSpecifier(dataTypeName);
offset += stringConveyor.GetSize(dataTypeName);
scalarType = dataType as Schema.IScalarType;
if (scalarType != null)
{
if (expandStreams)
{
elementSize = (int)int32Conveyor.Read(buffer, offset);
offset += sizeof(int);
streamID = Manager.StreamManager.Allocate();
stream = Manager.StreamManager.Open(streamID, LockMode.Exclusive);
stream.Write(buffer, offset, elementSize);
stream.Close();
_list.DataTypes.Add(scalarType);
_list.Values.Add(streamID);
offset += elementSize;
}
else
{
_list.DataTypes.Add(scalarType);
_list.Values.Add(int64Conveyor.Read(buffer, offset));
offset += sizeof(long);
}
}
else
{
// non-scalar values cannot be non-native
}
break;
}
}
}
}
}
