/// <summary>
/// Gets the instance of the aggregate root with the specified identifier.
/// </summary>
/// <param name="id">The identifier of the aggregate root.</param>
/// <returns>The instance of the aggregate root with the specified identifier.</returns>
public override TAggregateRoot Get <TAggregateRoot>(TAggregateRootId id)
{
var aggregateRootType = typeof(TAggregateRoot).AssemblyQualifiedName;
var spec = Specification <SnapshotDataObject <TAggregateRootId> > .Eval(p => p.AggregateRootId.Equals(id) && p.AggregateRootType == aggregateRootType);
var snapshotDataObject = this._storage.SelectFirstOnly(spec);
if (snapshotDataObject == null)
{
throw new RepositoryException("The aggregate (id={0}) cannot be found in the domain repository.", id);
}
var snapshot = _snapshotSerializer.ExtractSnapshot(snapshotDataObject);
var aggregateRoot = this.CreateAggregateRootInstance <TAggregateRoot>();
aggregateRoot.BuildFromSnapshot(snapshot);
return(aggregateRoot);
}
/// <summary>
/// Gets the snapshot for the aggregate root with the given type and identifier.
/// </summary>
/// <param name="aggregateRootType">The type of the aggregate root.</param>
/// <param name="id">The identifier of the aggregate root.</param>
/// <returns>The snapshot instance.</returns>
public override ISnapshot <TAggregateRootId> GetSnapshot(Type aggregateRootType, TAggregateRootId id)
{
var key = new EventNumberSnapshotMappingKey(aggregateRootType.AssemblyQualifiedName, id);
if (_snapshotMapping.ContainsKey(key))
{
return(_snapshotMapping[key]);
}
var aggregateRootTypeName = aggregateRootType.AssemblyQualifiedName;
ISpecification <SnapshotDataObject <TAggregateRootId> > spec = Specification <SnapshotDataObject <TAggregateRootId> > .Eval(
p => p.AggregateRootType == aggregateRootTypeName && p.AggregateRootId.Equals(id));
var dataObj = this.SnapshotStorage.SelectFirstOnly <SnapshotDataObject <TAggregateRootId> >(spec);
if (dataObj == null)
{
return(null);
}
var snapshot = _snapshotSerializer.ExtractSnapshot(dataObj);
this._snapshotMapping.Add(key, snapshot);
return(snapshot);
}