void
Decoder::decodeNestedTemplate(
DataSource & source,
Messages::ValueMessageBuilder & messageBuilder,
Messages::FieldIdentityCPtr & identity)
{
Codecs::PresenceMap pmap(getTemplateRegistry()->presenceMapBits());
if(this->verboseOut_)
{
pmap.setVerbose(verboseOut_);
}
static const std::string pmp("PMAP");
source.beginField(pmp);
pmap.decode(source);
static const std::string tid("templateID");
source.beginField(tid);
if(pmap.checkNextField())
{
template_id_t id;
FieldInstruction::decodeUnsignedInteger(source, *this, id, tid);
setTemplateId(id);
}
if(verboseOut_)
{
(*verboseOut_) << "Nested Template ID: " << getTemplateId() << std::endl;
}
Codecs::TemplateCPtr templatePtr;
if(getTemplateRegistry()->getTemplate(getTemplateId(), templatePtr))
{
if(templatePtr->getReset())
{
reset(false);
}
Messages::ValueMessageBuilder & groupBuilder(
messageBuilder.startGroup(
identity,
templatePtr->getApplicationType(),
templatePtr->getApplicationTypeNamespace(),
templatePtr->fieldCount()));
decodeSegmentBody(source, pmap, templatePtr, groupBuilder);
messageBuilder.endGroup(identity, groupBuilder);
}
else
{
std::string error = "Unknown template ID:";
error += boost::lexical_cast<std::string>(getTemplateId());
reportError("[ERR D9]", error);
}
return;
}
void
FieldInstructionGroup::decodeNop(
Codecs::DataSource & source,
Codecs::PresenceMap & pmap,
Codecs::Decoder & decoder,
Messages::ValueMessageBuilder & messageBuilder) const
{
bool present = true;
if(! isMandatory())
{
present = pmap.checkNextField();
}
if(present)
{
if(!segmentBody_)
{
decoder.reportFatal("[ERR U08}", "Segment not defined for Group instruction.");
}
if(messageBuilder.getApplicationType() != segmentBody_->getApplicationType())
{
// std::cout << "Decoding group into new segment: " << segmentBody_->getApplicationType() << std::endl;
Messages::ValueMessageBuilder & groupBuilder(
messageBuilder.startGroup(
identity_,
segmentBody_->getApplicationType(),
segmentBody_->getApplicationTypeNamespace(),
segmentBody_->fieldCount()));
decoder.decodeGroup(source, segmentBody_, groupBuilder);
messageBuilder.endGroup(
identity_,
groupBuilder);
}
else
{
// std::cout << "Folding group into parent segment: " << segmentBody_->getApplicationType() << std::endl;
// Because the application types match,
// the group fields are decoded directly into to the current
// field set. As a result the group "disappears" completely
// from the application message. This is a good thing. Groups
// are an artifact of the template used to encode the message
// rather than being an attribute of the actual message being
// encoded. In fact, the same message encoded with different
// templates could be transmitted with different sets of fields
// in groups.
decoder.decodeGroup(source, segmentBody_, messageBuilder);
}
}
}
void
FieldInstructionStaticTemplateRef::decodeNop(
Codecs::DataSource & source,
Codecs::PresenceMap & pmap,
Codecs::Decoder & decoder,
Messages::ValueMessageBuilder & messageBuilder) const
{
TemplateCPtr target;
if(!decoder.findTemplate(templateName_, templateNamespace_, target))
{
decoder.reportFatal("[ERR D9]", "Unknown template name for static templateref.", *identity_);
}
if(messageBuilder.getApplicationType() != target->getApplicationType())
{
Messages::ValueMessageBuilder & groupBuilder(
messageBuilder.startGroup(
identity_,
target->getApplicationType(),
target->getApplicationTypeNamespace(),
target->fieldCount()));
decoder.decodeSegmentBody(source, pmap, target, groupBuilder);
messageBuilder.endGroup(
identity_,
groupBuilder);
}
else
{
// Because the application types match,
// the templateRef fields are decoded directly into to the current
// field set. As a result the templateRef "disappears" completely
// from the application message. This is a good thing.
// The same message encoded with different
// templates could be transmitted with different sets of fields defined
// by templateRefs, but the underlying application type should not reflect
// the technique used to encode/decode it.
decoder.decodeSegmentBody(source, pmap, target, messageBuilder);
}
}