public override IEnumerable <KeyValuePair <AttributeValue, long> > Enumerate(QueryCriteria value)
{
if (_childPredicates.Count > 0)
{
var filter = new ClusteredHashSet <long>();
foreach (var childPredicate in _childPredicates)
{
var predicate = (TerminalPredicate)childPredicate;
if (predicate != null)
{
foreach (var kvp in predicate.Enumerate(value))
{
if (!value.SortResult)
{
if (!filter.Contains(kvp.Value))
{
filter.Add(kvp.Value);
yield return(kvp);
}
}
else
{
yield return(kvp);
}
}
}
}
}
}
public MetadataIndex(StatsIdentity statsIdentity, IPersistenceProvider metadataPersister)
{
_keyToRowIndex = new DoubleVector <DocumentKey, long>();
_bucketKeyIndex = new HashVector <int, ClusteredList <DocumentKey> >();
_enumerationSet = new ClusteredHashSet <long>();
_statsCollector = StatsManager.Instance.GetStatsCollector(statsIdentity);
_metadataPersister = metadataPersister;
}
public int GetHashCode(ClusteredHashSet <T> obj)
{
int hashCode = 0;
if (obj != null)
{
foreach (T t in obj)
{
hashCode = hashCode ^ (m_comparer.GetHashCode(t) & 0x7FFFFFFF);
}
} // else returns hashcode of 0 for null hashsets
return(hashCode);
}
// using m_comparer to keep equals properties in tact; don't want to choose one of the comparers
public bool Equals(ClusteredHashSet <T> x, ClusteredHashSet <T> y)
{
return(ClusteredHashSet <T> .HashSetEquals(x, y, m_comparer));
}
public MetadataIndexDisk(StatsIdentity statsIdentity, IPersistenceProvider metadataPersister)
: base(statsIdentity, metadataPersister)
{
_transactionRowIds = new ClusteredHashSet <long>();
_keysDeleted = new ClusteredHashSet <DocumentKey>();
}