/// <summary>
/// Write object as a predefined type if possible.
/// </summary>
/// <param name="hdr">Header.</param>
/// <param name="inStream">Input stream.</param>
/// <param name="outStream">Output stream.</param>
/// <param name="ctx">Context.</param>
/// <returns><c>True</c> if was written.</returns>
private bool WriteAsPredefined(byte hdr, PortableHeapStream inStream, IPortableStream outStream,
Context ctx)
{
switch (hdr)
{
case PortableUtils.TypeByte:
TransferBytes(inStream, outStream, 1);
break;
case PortableUtils.TypeShort:
TransferBytes(inStream, outStream, 2);
break;
case PortableUtils.TypeInt:
TransferBytes(inStream, outStream, 4);
break;
case PortableUtils.TypeLong:
TransferBytes(inStream, outStream, 8);
break;
case PortableUtils.TypeFloat:
TransferBytes(inStream, outStream, 4);
break;
case PortableUtils.TypeDouble:
TransferBytes(inStream, outStream, 8);
break;
case PortableUtils.TypeChar:
TransferBytes(inStream, outStream, 2);
break;
case PortableUtils.TypeBool:
TransferBytes(inStream, outStream, 1);
break;
case PortableUtils.TypeDecimal:
TransferBytes(inStream, outStream, 4); // Transfer scale
int magLen = inStream.ReadInt(); // Transfer magnitude length.
outStream.WriteInt(magLen);
TransferBytes(inStream, outStream, magLen); // Transfer magnitude.
break;
case PortableUtils.TypeString:
PortableUtils.WriteString(PortableUtils.ReadString(inStream), outStream);
break;
case PortableUtils.TypeGuid:
TransferBytes(inStream, outStream, 16);
break;
case PortableUtils.TypeDate:
TransferBytes(inStream, outStream, 12);
break;
case PortableUtils.TypeArrayByte:
TransferArray(inStream, outStream, 1);
break;
case PortableUtils.TypeArrayShort:
TransferArray(inStream, outStream, 2);
break;
case PortableUtils.TypeArrayInt:
TransferArray(inStream, outStream, 4);
break;
case PortableUtils.TypeArrayLong:
TransferArray(inStream, outStream, 8);
break;
case PortableUtils.TypeArrayFloat:
TransferArray(inStream, outStream, 4);
break;
case PortableUtils.TypeArrayDouble:
TransferArray(inStream, outStream, 8);
break;
case PortableUtils.TypeArrayChar:
TransferArray(inStream, outStream, 2);
break;
case PortableUtils.TypeArrayBool:
TransferArray(inStream, outStream, 1);
break;
case PortableUtils.TypeArrayDecimal:
case PortableUtils.TypeArrayString:
case PortableUtils.TypeArrayGuid:
case PortableUtils.TypeArrayDate:
case PortableUtils.TypeArrayEnum:
case PortableUtils.TypeArray:
int arrLen = inStream.ReadInt();
outStream.WriteInt(arrLen);
for (int i = 0; i < arrLen; i++)
{
Mutate0(ctx, inStream, outStream, false, 0, null);
}
break;
case PortableUtils.TypeCollection:
int colLen = inStream.ReadInt();
outStream.WriteInt(colLen);
outStream.WriteByte(inStream.ReadByte());
for (int i = 0; i < colLen; i++)
{
Mutate0(ctx, inStream, outStream, false, 0, EmptyVals);
}
break;
case PortableUtils.TypeDictionary:
int dictLen = inStream.ReadInt();
outStream.WriteInt(dictLen);
outStream.WriteByte(inStream.ReadByte());
for (int i = 0; i < dictLen; i++)
{
Mutate0(ctx, inStream, outStream, false, 0, EmptyVals);
Mutate0(ctx, inStream, outStream, false, 0, EmptyVals);
}
break;
case PortableUtils.TypeMapEntry:
Mutate0(ctx, inStream, outStream, false, 0, EmptyVals);
Mutate0(ctx, inStream, outStream, false, 0, EmptyVals);
break;
case PortableUtils.TypePortable:
TransferArray(inStream, outStream, 1); // Data array.
TransferBytes(inStream, outStream, 4); // Offset in array.
break;
case PortableUtils.TypeEnum:
TransferBytes(inStream, outStream, 4); // Integer ordinal.
break;
default:
return(false);
}
return(true);
}
/// <summary>
/// Internal mutation routine.
/// </summary>
/// <param name="inStream">Input stream.</param>
/// <param name="outStream">Output stream.</param>
/// <param name="ctx">Context.</param>
/// <param name="changeHash">WHether hash should be changed.</param>
/// <param name="hash">New hash.</param>
/// <param name="vals">Values to be replaced.</param>
/// <returns>Mutated object.</returns>
private void Mutate0(Context ctx, PortableHeapStream inStream, IPortableStream outStream,
bool changeHash, int hash, IDictionary <int, object> vals)
{
int inStartPos = inStream.Position;
int outStartPos = outStream.Position;
byte inHdr = inStream.ReadByte();
if (inHdr == PortableUtils.HdrNull)
{
outStream.WriteByte(PortableUtils.HdrNull);
}
else if (inHdr == PortableUtils.HdrHnd)
{
int inHnd = inStream.ReadInt();
int oldPos = inStartPos - inHnd;
int newPos;
if (ctx.OldToNew(oldPos, out newPos))
{
// Handle is still valid.
outStream.WriteByte(PortableUtils.HdrHnd);
outStream.WriteInt(outStartPos - newPos);
}
else
{
// Handle is invalid, write full object.
int inRetPos = inStream.Position;
inStream.Seek(oldPos, SeekOrigin.Begin);
Mutate0(ctx, inStream, outStream, false, 0, EmptyVals);
inStream.Seek(inRetPos, SeekOrigin.Begin);
}
}
else if (inHdr == PortableUtils.HdrFull)
{
byte inUsrFlag = inStream.ReadByte();
int inTypeId = inStream.ReadInt();
int inHash = inStream.ReadInt();
int inLen = inStream.ReadInt();
int inRawOff = inStream.ReadInt();
int hndPos;
if (ctx.AddOldToNew(inStartPos, outStartPos, out hndPos))
{
// Object could be cached in parent builder.
object cachedVal;
if (_parent._cache != null && _parent._cache.TryGetValue(inStartPos, out cachedVal))
{
ctx.Writer.Write(cachedVal, null);
}
else
{
// New object, write in full form.
outStream.WriteByte(PortableUtils.HdrFull);
outStream.WriteByte(inUsrFlag);
outStream.WriteInt(inTypeId);
outStream.WriteInt(changeHash ? hash : inHash);
// Skip length and raw offset as they are not known at this point.
outStream.Seek(8, SeekOrigin.Current);
// Write regular fields.
while (inStream.Position < inStartPos + inRawOff)
{
int inFieldId = inStream.ReadInt();
int inFieldLen = inStream.ReadInt();
int inFieldDataPos = inStream.Position;
object fieldVal;
bool fieldFound = vals.TryGetValue(inFieldId, out fieldVal);
if (!fieldFound || fieldVal != PortableBuilderField.RmvMarkerObj)
{
outStream.WriteInt(inFieldId);
int fieldLenPos = outStream.Position; // Here we will write length later.
outStream.Seek(4, SeekOrigin.Current);
if (fieldFound)
{
// Replace field with new value.
if (fieldVal != PortableBuilderField.RmvMarkerObj)
{
ctx.Writer.Write(fieldVal, null);
}
vals.Remove(inFieldId);
}
else
{
// If field was requested earlier, then we must write tracked value
if (_parent._cache != null && _parent._cache.TryGetValue(inFieldDataPos, out fieldVal))
{
ctx.Writer.Write(fieldVal, null);
}
else
{
// Filed is not tracked, re-write as is.
Mutate0(ctx, inStream, outStream, false, 0, EmptyVals);
}
}
int fieldEndPos = outStream.Position;
outStream.Seek(fieldLenPos, SeekOrigin.Begin);
outStream.WriteInt(fieldEndPos - fieldLenPos - 4);
outStream.Seek(fieldEndPos, SeekOrigin.Begin);
}
// Position intput stream pointer after the field.
inStream.Seek(inFieldDataPos + inFieldLen, SeekOrigin.Begin);
}
// Write remaining new fields.
foreach (KeyValuePair <int, object> valEntry in vals)
{
if (valEntry.Value != PortableBuilderField.RmvMarkerObj)
{
outStream.WriteInt(valEntry.Key);
int fieldLenPos = outStream.Position; // Here we will write length later.
outStream.Seek(4, SeekOrigin.Current);
ctx.Writer.Write(valEntry.Value, null);
int fieldEndPos = outStream.Position;
outStream.Seek(fieldLenPos, SeekOrigin.Begin);
outStream.WriteInt(fieldEndPos - fieldLenPos - 4);
outStream.Seek(fieldEndPos, SeekOrigin.Begin);
}
}
// Write raw data.
int rawPos = outStream.Position;
outStream.Write(inStream.InternalArray, inStartPos + inRawOff, inLen - inRawOff);
// Write length and raw data offset.
int outResPos = outStream.Position;
outStream.Seek(outStartPos + OffsetLen, SeekOrigin.Begin);
outStream.WriteInt(outResPos - outStartPos); // Length.
outStream.WriteInt(rawPos - outStartPos); // Raw offset.
outStream.Seek(outResPos, SeekOrigin.Begin);
}
}
else
{
// Object has already been written, write as handle.
outStream.WriteByte(PortableUtils.HdrHnd);
outStream.WriteInt(outStartPos - hndPos);
}
// Synchronize input stream position.
inStream.Seek(inStartPos + inLen, SeekOrigin.Begin);
}
else
{
// Try writing as well-known type with fixed size.
outStream.WriteByte(inHdr);
if (!WriteAsPredefined(inHdr, inStream, outStream, ctx))
{
throw new IgniteException("Unexpected header [position=" + (inStream.Position - 1) +
", header=" + inHdr + ']');
}
}
}