void
Encoder::encodeGroup(
DataDestination & destination,
const Codecs::SegmentBodyPtr & group,
const Messages::MessageAccessor & accessor)
{
size_t presenceMapBits = group->presenceMapBitCount();
Codecs::PresenceMap pmap(presenceMapBits);
pmap.setVerbose(this->verboseOut_);
// The presence map for the group will go into the current buffer
// that will be the last thing to appear in that buffer
DataDestination::BufferHandle pmapBuffer = destination.getBuffer();
DataDestination::BufferHandle bodyBuffer = pmapBuffer;
if(presenceMapBits > 0)
{
bodyBuffer = destination.startBuffer();
}
encodeSegmentBody(destination, pmap, group, accessor);
// remember the buffer we're presently working on
bodyBuffer = destination.getBuffer();
if(presenceMapBits > 0)
{
destination.selectBuffer(pmapBuffer);
static Messages::FieldIdentity pmapIdentity("PMAP", "Group");
destination.startField(pmapIdentity);
pmap.encode(destination);
destination.endField(pmapIdentity);
}
// and just continue working in the buffer where we built the group body
destination.selectBuffer(bodyBuffer);
}
void
Encoder::encodeSegment(
DataDestination & destination,
template_id_t templateId,
const Messages::MessageAccessor & accessor)
{
Codecs::TemplateCPtr templatePtr;
if(getTemplateRegistry()->getTemplate(templateId, templatePtr))
{
if(templatePtr->getReset())
{
reset(true);
}
Codecs::PresenceMap pmap(templatePtr->presenceMapBitCount());
DataDestination::BufferHandle header = destination.startBuffer();
destination.startBuffer();
// can we "copy" the template ID?
if(templateId == templateId_)
{
pmap.setNextField(false);
}
else
{
pmap.setNextField(true);
FieldInstruction::encodeUnsignedInteger(destination, getWorkingBuffer(), templateId);
templateId_ = templateId;
}
encodeSegmentBody(destination, pmap, templatePtr, accessor);
DataDestination::BufferHandle savedBuffer = destination.getBuffer();
destination.selectBuffer(header);
static Messages::FieldIdentity pmapIdentity("PMAP", "Message");
destination.startField(pmapIdentity);
pmap.encode(destination);
destination.endField(pmapIdentity);
destination.selectBuffer(savedBuffer);
}
else
{
throw EncodingError("[ERR D9] Unknown template ID.");
}
}
void
Encoder::encodeSegmentBody(
DataDestination & destination,
Codecs::PresenceMap & pmap,
const Codecs::SegmentBodyCPtr & segment,
const Messages::MessageAccessor & accessor)
{
size_t instructionCount = segment->size();
for( size_t nField = 0; nField < instructionCount; ++nField)
{
PROFILE_POINT("encode field");
Codecs::FieldInstructionCPtr instruction;
if(segment->getInstruction(nField, instruction))
{
destination.startField(*(instruction->getIdentity()));
instruction->encode(destination, pmap, *this, accessor);
destination.endField(*(instruction->getIdentity()));
}
}
}