public DocumentDataContainerEnumerator_IndexScan(
int untrimmedCount,
DriverRowData rowData,
DocumentDataContainer dataContainer,
IReadOnlyList <FieldMetadata> fields,
int countOfMainFields,
SortIndex sortIndex,
bool descending)
: base(untrimmedCount, rowData, dataContainer, fields, countOfMainFields)
{
if (sortIndex == null)
{
throw new ArgumentNullException("sortIndex");
}
// note that we ignore value of sortIndex.IsValid here
// that's because invalidation of index only happens when the data is stale
// we only check state of an index and optionally update it in the beginning of processing pipeline
if (sortIndex.OrderData == null || sortIndex.OrderData.Length > untrimmedCount)
{
throw new ArgumentException("Index on column is in invalid state", "sortIndex");
}
m_sortIndex = sortIndex;
m_descending = descending;
PositionInIndex = descending ? m_sortIndex.ValidDocCount : -1;
ReadStructureAndTakeLocks();
}
public SortIndexManager(DocumentDataContainer documentStore)
{
if (documentStore == null)
{
throw new ArgumentNullException("documentStore");
}
m_documentStore = documentStore;
m_fieldIdToIndexHandle = new ConcurrentDictionary <int, int>();
if (m_documentStore.FieldIdToColumnStore.Count != m_documentStore.DocDesc.Fields.Length)
{
throw new Exception("Internal error: fieldid->colstore map and array of fields in document descriptor have different lengths");
}
m_fieldIndexes = new SortIndex[m_documentStore.FieldIdToColumnStore.Count];
for (var ordinal = 0; ordinal < m_fieldIndexes.Length; ordinal++)
{
m_fieldIndexes[ordinal] = new SortIndex();
m_fieldIdToIndexHandle[m_documentStore.DocDesc.Fields[ordinal]] = ordinal;
}
}
internal void UpdateIndex(int fieldId, SortIndex index, int count)
{
if (!index.IsValid)
{
var columnStore = m_documentStore.RequireColumnStore(fieldId);
var method = typeof(SortIndex).GetMethod("Update").MakeGenericMethod(columnStore.ElementType);
m_documentStore.StructureLock.EnterWriteLock();
try
{
method.Invoke(index, new object[] { columnStore, m_documentStore.ValidDocumentsBitmap, count });
}
catch (TargetInvocationException e)
{
throw e.InnerException;
}
finally
{
m_documentStore.StructureLock.ExitWriteLock();
}
}
}