// Implement the hook method.
//
// Once the read hook has been set, ReadClassMember() will be called
// whenever the specified class member is encountered while
// reading a hooked input stream. Without the hook, the encountered
// class member would have been automatically read. With the hook, it is
// now the responsibility of the ReadClassMember() method to remove the
// class member from the input stream and process it as desired. It can
// either read it or skip it to remove it from the stream. This is
// easily done by calling DefaultRead() or DefaultSkip() from within
// ReadClassMember(). Subsequent processing is up to the application.
virtual void ReadClassMember(CObjectIStream& in,
const CObjectInfoMI& passed_info)
{
// Perform any pre-read processing here.
//NcbiCout << "In ReadClassMember() hook, before reading." << NcbiEndl;
// You must call DefaultRead() (or perform an equivalent operation)
// if you want the object to be read into memory. You could also
// call DefaultSkip() if you wanted to skip the hooked object while
// reading everything else.
DefaultRead(in, passed_info);
#if 0
// call DefaultRead to read member data, or DefaultSkip to skip it
DefaultSkip(in, passed_info);
// get information about the member
// typeinfo of the parent class
CObjectTypeInfo oti = passed_info.GetClassType();
// typeinfo and data of the parent class
const CObjectInfo& oi = passed_info.GetClassObject();
// typeinfo of the member
CObjectTypeInfo omti = passed_info.GetMemberType();
// typeinfo and data of the member
CObjectInfo om = passed_info.GetMember();
// index of the member in parent class
TMemberIndex mi = passed_info.GetMemberIndex();
// information about the member, including its name
const CMemberInfo* minfo = passed_info.GetMemberInfo();
#endif
// Perform any post-read processing here. Once the object has been
// read, its data can be used for processing.
CNcbiOstrstream oss;
oss << MSerial_AsnText << passed_info.GetClassObject();
string s = CNcbiOstrstreamToString(oss);
NcbiCout << s << NcbiEndl;
}
TObjectPtr GetClassObjectPtr(const CObjectInfoMI& member)
{
return member.GetClassObject().GetObjectPtr();
}
void CReadClassMemberHook::ReadMissingClassMember(CObjectIStream& in,
const CObjectInfoMI& member)
{
member.GetMemberInfo()->
DefaultReadMissingMember(in, member.GetClassObject().GetObjectPtr());
}
void CReadClassMemberHook::DefaultSkip(CObjectIStream& in,
const CObjectInfoMI& object)
{
in.SkipObject(object.GetMember());
}
