public SyncEntityNameActor(IQuery query,
ITenantProvider tenantProvider,
IBulkRepository <EntityName> bulkRepository,
IEqualityComparerFactory equalityComparerFactory)
{
_query = query;
_tenantProvider = tenantProvider;
_bulkRepository = bulkRepository;
_dataChangesDetector = new TwoPhaseDataChangesDetector <EntityName>(equalityComparerFactory);
}
public IReadOnlyCollection <IEvent> ExecuteCommands(IReadOnlyCollection <ICommand> commands)
{
// db accessors
var syncDataObjectCommands = commands.OfType <ISyncDataObjectCommand>().ToList();
if (syncDataObjectCommands.Count != 0)
{
foreach (var accessor in CreateAccessors(_query))
{
var specification = accessor.GetFindSpecification(syncDataObjectCommands);
var dataChangesDetector = new TwoPhaseDataChangesDetector <EntityName>(
spec => accessor.GetSource().WhereMatched(spec),
spec => _query.For <EntityName>().WhereMatched(spec),
_identityComparer,
_completeComparer);
var changes = dataChangesDetector.DetectChanges(specification);
_bulkRepository.Delete(changes.Complement);
_bulkRepository.Create(changes.Difference);
_bulkRepository.Update(changes.Intersection);
}
}
// memory accessors
var replaceDataObjectCommands = commands.OfType <IReplaceDataObjectCommand>().ToList();
if (replaceDataObjectCommands.Count != 0)
{
foreach (var accessor in CreateMemoryAccessors())
{
var specification = accessor.GetFindSpecification(replaceDataObjectCommands);
var dataChangesDetector = new TwoPhaseDataChangesDetector <EntityName>(
_ => accessor.GetDataObjects(replaceDataObjectCommands),
spec => _query.For <EntityName>().WhereMatched(spec),
_identityComparer,
_completeComparer);
var changes = dataChangesDetector.DetectChanges(specification);
_bulkRepository.Delete(changes.Complement);
_bulkRepository.Create(changes.Difference);
_bulkRepository.Update(changes.Intersection);
}
}
return(Array.Empty <IEvent>());
}
