private void OptimizeFilters(IJournalCore journal, IReadTransactionContext tx)
{
if (_andFilters != null)
{
_andFilters.Sort(new DescendingCardinalityComparer(journal, tx));
}
}
public long GetCardinality(IJournalCore journal, IReadTransactionContext tx)
{
if (_keys == null)
{
return(_journal.QueryStatistics.GetColumnDistinctCardinality(tx, _column));
}
return(_keys.Count);
}
public long Cardinality(IJournalCore journal, IReadTransactionContext tx)
{
if (!_cardinality.HasValue)
{
_cardinality = journal.QueryStatistics.GetColumnDistinctCardinality(tx, _column);
}
return(_cardinality.Value);
}
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 long Cardinality(IJournalCore journal, IReadTransactionContext tx)
{
if (!_cardin.HasValue)
{
if (_andFilters != null)
{
_cardin = _andFilters.Min(f => f.GetCardinality(journal, tx));
}
else
{
_cardin = long.MaxValue;
}
}
return(_cardin.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)
{
// Timestamp restricted
if (_left is TimestampRangePlanItem)
{
return(_right.Execute(journal, tx, sort));
}
if (_right is TimestampRangePlanItem)
{
return(_left.Execute(journal, tx, sort));
}
if (_left.Cardinality(journal, tx) < _right.Cardinality(journal, tx))
{
return(Intersect(_left.Execute(journal, tx, sort), _right.Execute(journal, tx, sort), sort));
}
return(Intersect(_right.Execute(journal, tx, sort), _left.Execute(journal, tx, sort), sort));
}
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));
}
public ResultSetBuilder(IJournalCore journal, IReadTransactionContext tx)
{
_journal = journal;
_tx = tx;
_planHead = new TimestampRangePlanItem(DateInterval.Any);
}
internal ExpressionEvaluatorVisitor(IJournalCore journal, IReadTransactionContext tx, Type itemType)
{
_journal = journal;
_tx = tx;
_itemType = itemType;
}
public RecordQuery(IJournalCore journal, IReadTransactionContext tx)
{
_journal = journal;
_tx = tx;
}
public LatestByFilter(IJournalCore journal, IColumnMetadata column, IList <T> keys)
{
_journal = journal;
_column = column;
_keys = keys;
}
public JournalQueryProvider(IJournalCore journal, IReadTransactionContext tx)
{
_journal = journal;
_tx = tx;
}
public RowScanPlanItem(IJournalCore journal, IReadTransactionContext tx)
{
_journal = journal;
_tx = tx;
Timestamps = new DateRange();
}
public DescendingCardinalityComparer(IJournalCore journal, IReadTransactionContext rtx)
{
_journal = journal;
_rtx = rtx;
}
internal ExpressionEvaluatorVisitor(IJournalCore journal, IReadTransactionContext tx, QlParameter[] parameters)
{
_journal = journal;
_tx = tx;
_parameters = parameters;
}
public override long GetCardinality(IJournalCore journal, IReadTransactionContext tx)
{
return(long.MaxValue);
}
public QueryPlanBinder(IJournalCore journal, IReadTransactionContext tx)
{
_journal = journal;
_tx = tx;
}
public override long GetCardinality(IJournalCore journal, IReadTransactionContext tx)
{
return(journal.QueryStatistics.GetCardinalityByColumnValue(tx, _column, _values ?? new[] { _value }));
}
public abstract long GetCardinality(IJournalCore journal, IReadTransactionContext tx);
public long Cardinality(IJournalCore journal, IReadTransactionContext tx)
{
return(Math.Min(_left.Cardinality(journal, tx), _right.Cardinality(journal, tx)));
}
public IEnumerable <long> Execute(IJournalCore journal, IReadTransactionContext tx, ERowIDSortDirection sort)
{
return(MergeDistinct(_left.Execute(journal, tx, sort), _right.Execute(journal, tx, sort), sort));
}
