private IMongoQueryable <EventModel> AddFilters(
IEventFilteringCriteria eventFilteringCriteria, IMongoQueryable <EventModel> query)
{
return(query
.AddFilter(!string.IsNullOrEmpty(eventFilteringCriteria.Source),
q => q.Where(x => x.Source == eventFilteringCriteria.Source))
.AddFilter(!string.IsNullOrEmpty(eventFilteringCriteria.EventName),
q => q.Where(x => x.EventName == eventFilteringCriteria.EventName))
.AddFilter(eventFilteringCriteria.EventType != null,
q => q.Where(x => x.EventType == eventFilteringCriteria.EventType))
.AddFilter(eventFilteringCriteria.From != null,
q => q.Where(x => x.Timestamp >= eventFilteringCriteria.From))
.AddFilter(eventFilteringCriteria.To != null,
q => q.Where(x => x.Timestamp <= eventFilteringCriteria.To)));
}
public async Task <PaginationResult <EventModel> > FindEventsByCriteriaAsync(
IEventFilteringCriteria eventFilteringCriteria, CancellationToken cancellationToken = default)
{
var collection = _eventStoreDatabase.GetCollection <EventModel>(_configProvider.EventStoreContainer);
var query = collection.AsQueryable();
query = AddFilters(eventFilteringCriteria, query);
int count = await query.CountAsync(cancellationToken);
var result = await query
.OrderByDescending(x => x.Id)
.Skip((eventFilteringCriteria.PageNumber - 1) * eventFilteringCriteria.PageSize)
.Take(eventFilteringCriteria.PageSize)
.ToListAsync(cancellationToken);
return(new PaginationResult <EventModel>
{
PageNumber = eventFilteringCriteria.PageNumber,
PageSize = eventFilteringCriteria.PageSize,
ResultTotalCount = count,
Result = result
});
}