private void CreateFields(Type sourceType, TypeBuilder typeBuilder)
{
var fieldMap = SnapshotableField.GetMap(sourceType);
foreach (var pair in fieldMap)
{
typeBuilder.DefineField(pair.Key, pair.Value.FieldType, FieldAttributes.Public);
}
}
private void TransferState(DynamicSnapshotBase snapshot, AggregateRoot aggregate, TransferDirection direction)
{
if (snapshot == null)
{
throw new ArgumentNullException("snapshot");
}
if (aggregate == null)
{
throw new ArgumentNullException("source");
}
var aggregateFieldMap = SnapshotableField.GetMap(aggregate.GetType());
var snapshotFields = snapshot.GetType().GetFields(BindingFlags.Instance | BindingFlags.Public);
Action <object, FieldInfo, object, FieldInfo> doTransfer = null;
if (direction == TransferDirection.ToAggregateRoot)
{
doTransfer = (source, sourceField, destination, destinationField)
=> destinationField.SetValue(destination, sourceField.GetValue(source));
}
else
{
doTransfer = (destination, destinationField, source, sourceField)
=> destinationField.SetValue(destination, sourceField.GetValue(source));
}
foreach (var snapshotField in snapshotFields)
{
FieldInfo aggregateField;
if (aggregateFieldMap.TryGetValue(snapshotField.Name, out aggregateField))
{
doTransfer(snapshot, snapshotField, aggregate, aggregateField);
}
else
{
// TODO: No field found; throw?
}
}
}