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());
}
}
public static void WritePrimaryKeyColumn(Column column, PlainBufferOutputStream output, byte checksum)
{
output.WriteRawByte(PlainBufferConsts.TAG_CELL);
output.WriteRawByte(PlainBufferConsts.TAG_CELL_NAME);
byte[] rawData = column.GetNameRawData();
output.WriteRawLittleEndian32(rawData.Length);
output.WriteBytes(rawData);
output.WriteRawByte(PlainBufferConsts.TAG_CELL_VALUE);
WritePrimaryKeyValue(column.Value, output);
output.WriteRawByte(PlainBufferConsts.TAG_CELL_CHECKSUM);
output.WriteRawByte(checksum);
}
public void WriteCellName(byte[] name)
{
WriteTag(PlainBufferConsts.TAG_CELL_NAME);
output.WriteRawLittleEndian32(name.Length);
output.WriteBytes(name);
}