private void EnsureMaxEventCountLimitIsRespected(SimpleEventQuery query, IEnumerable <EpcisEvent> events)
{
if (query.Parameters.SingleOrDefault(x => x is MaxEventCountParameter) is MaxEventCountParameter maxEventCountParameter && events.Count() == _limit)
{
throw new EpcisException(ExceptionType.QueryTooLargeException, $"Query returned more than {maxEventCountParameter.Limit} events.");
}
}
public async Task <IEnumerable <EpcisEvent> > Execute(SimpleEventQuery query)
{
query.Parameters.ForEach(x => Apply((dynamic)x));
_query.OrderBy($"{_orderProperty} {_orderDirection.ToSql()}"); // Apply order by parameter (default is request record_time desc).
_parameters.SetLimit(_limit == 0 ? 1024 : _limit);
var events = await _unitOfWork.Query <EpcisEvent>(_sqlTemplate.RawSql, _parameters.Values);
// If a MaxEventCountParameter exist and the number of events == the limit, throw an exception
EnsureMaxEventCountLimitIsRespected(query, events);
using (var reader = await _unitOfWork.FetchMany(SqlRequests.RelatedQuery, new { EventIds = events.Select(x => x.Id).ToArray() }))
{
var epcs = await reader.ReadAsync <Epc>();
var fields = await reader.ReadAsync <CustomField>();
var transactions = await reader.ReadAsync <BusinessTransaction>();
var sourceDests = await reader.ReadAsync <SourceDestination>();
foreach (var evt in events)
{
evt.Epcs = epcs.Where(x => x.EventId == evt.Id).ToList();
evt.CustomFields = fields.Where(x => x.EventId == evt.Id).ToList();
evt.BusinessTransactions = transactions.Where(x => x.EventId == evt.Id).ToList();
evt.SourceDestinationList = sourceDests.Where(x => x.EventId == evt.Id).ToList();
}
}
return(events);
}
public async Task Run(Subscription subscription)
{
var query = new SimpleEventQuery { /*Parameters = subscription.Parameters*/
};
var result = await _dispatcher.Dispatch(query);
await _resultSender.Send(subscription.Destination, result);
}
public override void Arrange()
{
base.Arrange();
Query = new SimpleEventQuery();
}