public void Merge(string elementNamePrefix, DeltaUpdateDefinition deltaUpdateDefinition)
{
foreach (var elementUpdate in deltaUpdateDefinition.ElementsToReplace)
{
var newElementName = GetElementNameWithPrefix(elementNamePrefix, elementUpdate.ElementName);
Set(newElementName, elementUpdate.NewValue);
}
foreach (var elementIncrement in deltaUpdateDefinition.ElementsToIncrement)
{
var newElementName = GetElementNameWithPrefix(elementNamePrefix, elementIncrement.ElementName);
Increment(newElementName, elementIncrement.IncrementBy);
}
}
private DeltaUpdateDefinition GetUpdateDefinitionForObject(IObjectDirtyTracker dirtyTracker, Type objectType, object aggregate)
{
var updateDefinition = new DeltaUpdateDefinition();
var classMap = BsonClassMap.LookupClassMap(objectType);
foreach (var memberTracker in dirtyTracker.MemberTrackers.Where(t => t.IsDirty))
{
if (classMap.ShouldUpdateIncrementally(memberTracker.ElementName))
{
var incrementBy = GetValueDifferenceAsBsonValue(memberTracker);
updateDefinition.Increment(memberTracker.ElementName, incrementBy);
continue;
}
var memberMap = classMap.GetMemberMapForElement(memberTracker.ElementName);
var memberClassMap = BsonClassMap.LookupClassMap(memberMap.MemberType);
if (memberClassMap.ShouldUseDeltaUpdateStrategy())
{
var objectTracker = (IObjectDirtyTracker)memberTracker;
var model = memberMap.Getter(aggregate);
if (model == null)
{
updateDefinition.Set(memberTracker.ElementName, BsonNull.Value);
continue;
}
if (memberTracker.OriginalValue == BsonNull.Value)
{
updateDefinition.Set(memberTracker.ElementName, memberTracker.CurrentValue);
continue;
}
var subUpdateDefinition = GetUpdateDefinitionForObject(objectTracker, memberMap.MemberType, model);
updateDefinition.Merge(memberTracker.ElementName, subUpdateDefinition);
}
else
{
updateDefinition.Set(memberTracker.ElementName, memberTracker.CurrentValue);
}
}
return(updateDefinition);
}
