/// <summary>
/// NOTE: This was getLongEnumerable() in Lucene
/// </summary>
private IEnumerable <long?> GetInt64Enumerable(SegmentReader reader, string field, NumericDocValuesFieldUpdates fieldUpdates)
{
int maxDoc = reader.MaxDoc;
IBits DocsWithField = reader.GetDocsWithField(field);
NumericDocValues currentValues = reader.GetNumericDocValues(field);
NumericDocValuesFieldUpdates.Iterator iter = (NumericDocValuesFieldUpdates.Iterator)fieldUpdates.GetIterator();
int updateDoc = iter.NextDoc();
for (int curDoc = 0; curDoc < maxDoc; ++curDoc)
{
if (curDoc == updateDoc) //document has an updated value
{
long?value = iter.Value; // either null or updated
updateDoc = iter.NextDoc(); //prepare for next round
yield return(value);
}
else
{ // no update for this document
if (Debugging.AssertsEnabled)
{
Debugging.Assert(curDoc < updateDoc);
}
if (currentValues != null && DocsWithField.Get(curDoc))
{
// only read the current value if the document had a value before
yield return(currentValues.Get(curDoc));
}
else
{
yield return(null);
}
}
}
}
private IEnumerable<long?> GetLongEnumerable(SegmentReader reader, string field, NumericDocValuesFieldUpdates fieldUpdates)
{
int maxDoc = reader.MaxDoc;
Bits DocsWithField = reader.GetDocsWithField(field);
NumericDocValues currentValues = reader.GetNumericDocValues(field);
NumericDocValuesFieldUpdates.Iterator iter = (NumericDocValuesFieldUpdates.Iterator)fieldUpdates.GetIterator();
int updateDoc = iter.NextDoc();
for (int curDoc = 0; curDoc < maxDoc; ++curDoc)
{
if (curDoc == updateDoc) //document has an updated value
{
long? value = (long?)iter.Value(); // either null or updated
updateDoc = iter.NextDoc(); //prepare for next round
yield return value;
}
else
{ // no update for this document
if (currentValues != null && DocsWithField.Get(curDoc))
{
// only read the current value if the document had a value before
yield return currentValues.Get(curDoc);
}
else
{
yield return null;
}
}
}
}