public static void WritePrimaryKeyValue(ColumnValue value, PlainBufferOutputStream output)
{
if (value.IsInfMin())
{
output.WriteRawLittleEndian32(1);
output.WriteRawByte(PlainBufferConsts.VT_INF_MIN);
return;
}
if (value.IsInfMax())
{
output.WriteRawLittleEndian32(1);
output.WriteRawByte(PlainBufferConsts.VT_INF_MAX);
return;
}
if (value.IsPlaceHolderForAutoIncr())
{
output.WriteRawLittleEndian32(1);
output.WriteRawByte(PlainBufferConsts.VT_AUTO_INCREMENT);
return;
}
switch (value.Type)
{
case ColumnValueType.String:
{
byte[] rawData = value.AsStringInBytes();
int prefixLength = PlainBufferOutputStream.LITTLE_ENDIAN_32_SIZE + 1; // length + type + length
output.WriteRawLittleEndian32(prefixLength + rawData.Length); // length + type + value
output.WriteRawByte(PlainBufferConsts.VT_STRING);
output.WriteRawLittleEndian32(rawData.Length);
output.WriteBytes(rawData);
break;
}
case ColumnValueType.Integer:
{
output.WriteRawLittleEndian32(1 + PlainBufferOutputStream.LITTLE_ENDIAN_64_SIZE);
output.WriteRawByte(PlainBufferConsts.VT_INTEGER);
output.WriteRawLittleEndian64(value.IntegerValue);
break;
}
case ColumnValueType.Binary:
{
byte[] rawData = value.BinaryValue;
int prefixLength = PlainBufferOutputStream.LITTLE_ENDIAN_32_SIZE + 1; // length + type + length
output.WriteRawLittleEndian32(prefixLength + rawData.Length); // length + type + value
output.WriteRawByte(PlainBufferConsts.VT_BLOB);
output.WriteRawLittleEndian32(rawData.Length);
output.WriteBytes(rawData);
break;
}
default:
throw new IOException("Bug: unsupported primary key type: " + value.GetType());
}
}
// Bytes Data: value_type + type
public static int ComputeColumnValueWithoutLengthPrefix(ColumnValue value)
{
int size = 1; // length + type + value
if (value.IsInfMin() || value.IsInfMax() || value.IsPlaceHolderForAutoIncr())
{
return(size); // inf value and AutoIncr only has a type.
}
switch (value.Type)
{
case ColumnValueType.String:
{
size += PlainBufferOutputStream.LITTLE_ENDIAN_32_SIZE;
size += value.AsStringInBytes().Length;
break;
}
case ColumnValueType.Integer:
{
size += PlainBufferOutputStream.LITTLE_ENDIAN_64_SIZE;
break;
}
case ColumnValueType.Binary:
{
size += PlainBufferOutputStream.LITTLE_ENDIAN_32_SIZE;
size += value.BinaryValue.Length;
break;
}
case ColumnValueType.Double:
{
size += PlainBufferOutputStream.LITTLE_ENDIAN_64_SIZE;
break;
}
case ColumnValueType.Boolean:
{
size += 1;
break;
}
default:
throw new IOException("Bug: unsupported column type: " + value.Type);
}
return(size);
}
public void WritePrimaryKeyValueWithoutLengthPrefix(ColumnValue value)
{
if (value.IsInfMin())
{
output.WriteRawByte(PlainBufferConsts.VT_INF_MIN);
return;
}
if (value.IsInfMax())
{
output.WriteRawByte(PlainBufferConsts.VT_INF_MAX);
return;
}
if (value.IsPlaceHolderForAutoIncr())
{
output.WriteRawByte(PlainBufferConsts.VT_AUTO_INCREMENT);
return;
}
byte[] rawData;
switch (value.Type)
{
case ColumnValueType.String:
rawData = value.AsStringInBytes();
output.WriteRawByte(PlainBufferConsts.VT_STRING);
output.WriteRawLittleEndian32(rawData.Length);
output.WriteBytes(rawData);
break;
case ColumnValueType.Integer:
output.WriteRawByte(PlainBufferConsts.VT_INTEGER);
output.WriteRawLittleEndian64(value.IntegerValue);
break;
case ColumnValueType.Binary:
rawData = value.BinaryValue;
output.WriteRawByte(PlainBufferConsts.VT_BLOB);
output.WriteRawLittleEndian32(rawData.Length);
output.WriteBytes(rawData);
break;
default:
throw new IOException("Bug: unsupported primary key type: " + value.Type);
}
}
public void WriteCellValue(ColumnValue value)
{
WriteTag(PlainBufferConsts.TAG_CELL_VALUE);
if (value.IsInfMin())
{
output.WriteRawLittleEndian32(1);
output.WriteRawByte(PlainBufferConsts.VT_INF_MIN);
return;
}
if (value.IsInfMax())
{
output.WriteRawLittleEndian32(1);
output.WriteRawByte(PlainBufferConsts.VT_INF_MAX);
return;
}
if (value.IsPlaceHolderForAutoIncr())
{
output.WriteRawLittleEndian32(1);
output.WriteRawByte(PlainBufferConsts.VT_AUTO_INCREMENT);
return;
}
byte[] rawData;
int prefixLength;
switch (value.Type)
{
case ColumnValueType.String:
rawData = value.AsStringInBytes();
prefixLength = PlainBufferOutputStream.LITTLE_ENDIAN_32_SIZE + 1; // length + type + length
output.WriteRawLittleEndian32(prefixLength + rawData.Length); // length + type + value
output.WriteRawByte(PlainBufferConsts.VT_STRING);
output.WriteRawLittleEndian32(rawData.Length);
output.WriteBytes(rawData);
break;
case ColumnValueType.Integer:
output.WriteRawLittleEndian32(1 + PlainBufferOutputStream.LITTLE_ENDIAN_64_SIZE);
output.WriteRawByte(PlainBufferConsts.VT_INTEGER);
output.WriteRawLittleEndian64(value.IntegerValue);
break;
case ColumnValueType.Binary:
rawData = value.BinaryValue;
prefixLength = PlainBufferOutputStream.LITTLE_ENDIAN_32_SIZE + 1; // length + type + length
output.WriteRawLittleEndian32(prefixLength + rawData.Length); // length + type + value
output.WriteRawByte(PlainBufferConsts.VT_BLOB);
output.WriteRawLittleEndian32(rawData.Length);
output.WriteBytes(rawData);
break;
case ColumnValueType.Boolean:
output.WriteRawLittleEndian32(2);
output.WriteRawByte(PlainBufferConsts.VT_BOOLEAN);
output.WriteBool(value.BooleanValue);
break;
case ColumnValueType.Double:
output.WriteRawLittleEndian32(1 + PlainBufferOutputStream.LITTLE_ENDIAN_64_SIZE);
output.WriteRawByte(PlainBufferConsts.VT_DOUBLE);
output.WriteDouble(value.DoubleValue);
break;
default:
throw new IOException("Bug: unsupported column type: " + value.Type);
}
}