public IEnumerable <long> Execute(IJournalCore journal, IReadTransactionContext tx, ERowIDSortDirection sortDirection)
{
var intervalFilter = new PartitionIntervalIterator();
var symbolFilter = new LatestByFilter <T>(journal, _column, _keys);
return(Timestamps.AllIntervals.Reverse().SelectMany(interval =>
symbolFilter.Filter(intervalFilter.IteratePartitions(
tx.ReverseReadPartitions, interval, tx), tx, sortDirection)
));
}
public long Cardinality(IJournalCore journal, IReadTransactionContext tx)
{
if (!_caridnality.HasValue)
{
var intervalFilter = new PartitionIntervalIterator();
_caridnality =
Timestamps
.AllIntervals
.Sum(p => intervalFilter.IteratePartitions(tx.ReadPartitions, p, tx).Sum(p2 => p2.High - p2.Low));
}
return(_caridnality.Value);
}
public IEnumerable <long> Execute(IJournalCore journal, IReadTransactionContext tx, ERowIDSortDirection sort)
{
var intervalFilter = new PartitionIntervalIterator();
if (sort == ERowIDSortDirection.Desc)
{
return(Timestamps.AllIntervals.Reverse().SelectMany(
interval => GetIdsDesc(
intervalFilter.IteratePartitions(
tx.ReadPartitions.Reverse(), interval, tx))
));
}
return(Timestamps.AllIntervals.SelectMany(
interval => GetIdsAsc(
intervalFilter.IteratePartitions(tx.ReadPartitions, interval, tx))
));
}
public IEnumerable <long> Execute(IJournalCore journal, IReadTransactionContext tx,
ERowIDSortDirection sort)
{
var intervalFilter = new PartitionIntervalIterator();
var intervals = Timestamps.AllIntervals.SelectMany(
i => intervalFilter.IteratePartitions(tx.ReadPartitions, i, tx)).ToList();
if (sort == ERowIDSortDirection.Desc)
{
intervals.Reverse();
}
if (_partitionFilter != null)
{
if (_andFilters == null)
{
return(_partitionFilter.Filter(intervals, tx, sort));
}
OptimizeFilters(journal, tx);
return(ApplyFilters(_partitionFilter.Filter(intervals, tx, sort), tx));
}
OptimizeFilters(journal, tx);
return(FilterRowsRange(tx, intervals, sort));
}
