ISagaQuery <TSaga> ISagaQueryFactory <TSaga, TMessage> .CreateQuery(ConsumeContext <TMessage> context)
{
Expression <Func <TSaga, bool> > expression = new SagaFilterExpressionConverter <TSaga, TMessage>(context.Message)
.Convert(_filterExpression);
return(new SagaQuery <TSaga>(expression));
}
public IEnumerable <Guid> Find(IConsumeContext <TMessage> context)
{
Expression <Func <TSaga, bool> > filter =
new SagaFilterExpressionConverter <TSaga, TMessage>(context.Message).Convert(_filterExpression);
var sagaFilter = new SagaFilter <TSaga>(filter);
int count = 0;
foreach (var sagaId in _repository.Where(sagaFilter, x => x.CorrelationId))
{
yield return(sagaId);
count++;
}
if (count == 0)
{
if (_policy.CanCreateInstance(context))
{
yield return(_policy.GetNewSagaId(context));
}
}
}