private IPersistThroughEvents GetParentOrThrow <TChildId, TParentId>(IParcelVisionEventEnvelope <TChildId, TParentId> eventEnvelope)
where TParentId : IId
where TChildId : IId
{
IPersistThroughEvents parent;
var parentContainer = GetOrCreateContainer <TParentId>();
//TODO (Savvas) replace with propper exception
if (!parentContainer.TryGetValue(eventEnvelope.ParentId, out parent))
{
throw new Exception("Parent should exist already");
}
return(parent);
}
private void GetOrCreateAndReconstituteEntity <TChildId, TParentId>(IParcelVisionEventEnvelope <TChildId, TParentId> eventEnvelope)
where TParentId : IId, IEquatable <TParentId>
where TChildId : IId, IEquatable <TChildId>
{
IPersistThroughEvents entity;
var childContainer = GetOrCreateContainer <TChildId>();
if (!childContainer.TryGetValue(eventEnvelope.SourceId, out entity))
{
entity = CreateAndSetupRelationships(eventEnvelope, entity);
childContainer[eventEnvelope.SourceId] = entity;
}
entity.ReconstituteFrom(eventEnvelope.Event);
}
private IPersistThroughEvents CreateAndSetupRelationships <TChildId, TParentId>(IParcelVisionEventEnvelope <TChildId, TParentId> eventEnvelope,
IPersistThroughEvents entity)
where TParentId : IId, IEquatable <TParentId>
where TChildId : IId, IEquatable <TChildId>
{
var parent = GetParentOrThrow(eventEnvelope);
var newChildEntity = (IPersistThroughEvents)Activator.CreateInstance(eventEnvelope.SourceEntityType);
var parentAsEntity = parent as Entity <TParentId>;
var childAsHasParent = newChildEntity as IHaveAParent;
if (childAsHasParent != null)
{
SetParentInChild(parentAsEntity, childAsHasParent);
}
entity = newChildEntity;
return(entity);
}
private void ReconstituteFrom(IParcelVisionEventEnvelope eventEnvelope)
{
((IPersistThroughEvents)this).ReconstituteFrom(eventEnvelope.Event);
}