GeneratePocoUpdateBson <TPoco, TTrackablePoco>(TrackablePocoMongoDbMapper <TPoco> mapper)
where TPoco : ITrackablePoco <TPoco>
where TTrackablePoco : ITrackable <TPoco>
{
return((update, trackablePoco, keyValues) =>
mapper.BuildUpdatesForSave(update, (TrackablePocoTracker <TPoco>)trackablePoco.Tracker, keyValues));
}
private static void BuildTrackablePocoProperty <TPoco>(PropertyItem item)
where TPoco : ITrackablePoco <TPoco>
{
var mapper = new TrackablePocoMongoDbMapper <TPoco>();
item.Mapper = mapper;
item.ExportToBson = (container, doc) =>
{
var value = (TPoco)item.PropertyInfo.GetValue(container);
if (value != null)
{
doc.Add(item.PropertyInfo.Name, mapper.ConvertToBsonDocument(value));
}
};
item.ImportFromBson = (doc, container) =>
{
var value = mapper.ConvertToTrackablePoco(doc, item.PropertyInfo.Name);
item.PropertyInfo.SetValue(container, value);
};
item.SaveChanges = (update, tracker, keyValues) =>
{
var valueTracker = (TrackablePocoTracker <TPoco>)item.TrackerPropertyInfo.GetValue(tracker);
if (valueTracker.HasChange == false)
{
return(null);
}
return(new List <UpdateDefinition <BsonDocument> >
{
mapper.BuildUpdatesForSave(
update, valueTracker,
keyValues.Concat(new object[] { item.PropertyInfo.Name }).ToArray())
});
};
}
