protected <O> O instantiate(int id, DataContainer container, ClassTypeModel<O> typeModel)
throws IOException {
Map<FieldModel<? super O, ?>, Object> state = new HashMap<FieldModel<? super O, ?>, Object>();
ClassTypeModel<? super O> currentTypeModel = typeModel;
List<FieldUpdate<O>> sets = new ArrayList<FieldUpdate<O>>();
while (currentTypeModel != null) {
if (currentTypeModel instanceof ClassTypeModel) {
for (FieldModel<? super O, ?> fieldModel : currentTypeModel.getFields()) {
if (!fieldModel.isTransient()) {
switch (container.readInt()) {
case DataKind.NULL_VALUE:
state.put(fieldModel, null);
break;
case DataKind.OBJECT_REF:
int refId = container.readInt();
Object refO = idToObject.get(refId);
if (refO != null) {
state.put(fieldModel, refO);
} else {
sets.add(new FieldUpdate<O>(refId, fieldModel));
}
break;
case DataKind.OBJECT:
Object o = container.readObject();
state.put(fieldModel, o);
break;
}
}
}
}
currentTypeModel = currentTypeModel.getSuperType();
}
//
O instance = instantiate(typeModel, state);
// Create future field updates
for (FieldUpdate<O> set : sets) {
List<FutureFieldUpdate<?>> resolutions = idToResolutions.get(set.ref);
if (resolutions == null) {
resolutions = new ArrayList<FutureFieldUpdate<?>>();
idToResolutions.put(set.ref, resolutions);
}
resolutions.add(new FutureFieldUpdate<O>(instance, set.fieldModel));
}
//
idToObject.put(id, instance);
// Resolve future field updates
List<FutureFieldUpdate<?>> resolutions = idToResolutions.remove(id);
if (resolutions != null) {
for (FutureFieldUpdate<?> resolution : resolutions) {
resolution.fieldModel.castAndSet(resolution.target, instance);
}
}
//
return instance;
}
private <O> O instantiate(ClassTypeModel<O> typeModel, Map<FieldModel<? super O, ?>, ?> state)
throws InvalidClassException {
try {
ObjectFactory<? super O> factory = context.getFactory(typeModel.getJavaType());
//
return factory.create(typeModel.getJavaType(), state);
} catch (Exception e) {
InvalidClassException ice =
new InvalidClassException(
"Cannot instantiate object from class " + typeModel.getJavaType().getName());
ice.initCause(e);
throw ice;
}
}