I'm trying to bind XQuery variables to message headers, using the
correct type for each header.
I don't see how to get any arbitrary typed value from a header in our
current API. It's easy to get integer values or string values:
boost::shared_ptr<FieldValue> value
value->get<int>()
value->get<string>()
Is there a good general way to get a typed value from a FieldValue?
Check the code snippet below my signature to understand what I'm trying
to do.
Jonathan
void bindVariable(boost::shared_ptr<DynamicContext> context, std::string
name, boost::shared_ptr<FieldValue> value)
{
QPID_LOG(trace, "XmlExchange, binding external variable: " << name
<< " = " << value << " (" << value->getType() << ")");
Item::Ptr item;
switch (value->getType()) {
case TYPE_CODE_INT8:
case TYPE_CODE_INT16:
case TYPE_CODE_INT32:
case TYPE_CODE_INT64:
item =
context->getItemFactory()->createInteger(value->get<int>(), context.get());
break;
/*
Need to do this for all simple types allowed for headers
*/
default:
QPID_LOG(trace, "XmlExchange, no support for headers of this
type: " << value->getType());
return;
}
context->setExternalVariable(X(name.c_str()), item);
return;
}
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