public virtual double ParseDouble(System.String val)
{
int shift = val[0] - NumericUtils.SHIFT_START_LONG;
if (shift > 0 && shift <= 63)
throw new FieldCacheImpl.StopFillCacheException();
return NumericUtils.SortableLongToDouble(NumericUtils.PrefixCodedToLong(val));
}
public override DocIdSet GetDocIdSet(IndexReader reader)
{
// we transform the floating point numbers to sortable integers
// using NumericUtils to easier find the next bigger/lower value
double inclusiveLowerPoint;
double inclusiveUpperPoint;
if (lowerVal != null)
{
double f = System.Convert.ToDouble(((System.ValueType)lowerVal));
if (!includeUpper && f > 0.0 && System.Double.IsInfinity(f))
{
return(DocIdSet.EMPTY_DOCIDSET);
}
long i = NumericUtils.DoubleToSortableLong(f);
inclusiveLowerPoint = NumericUtils.SortableLongToDouble(includeLower?i:(i + 1L));
}
else
{
inclusiveLowerPoint = System.Double.NegativeInfinity;
}
if (upperVal != null)
{
double f = System.Convert.ToDouble(((System.ValueType)upperVal));
if (!includeUpper && f < 0.0 && System.Double.IsInfinity(f))
{
return(DocIdSet.EMPTY_DOCIDSET);
}
long i = NumericUtils.DoubleToSortableLong(f);
inclusiveUpperPoint = NumericUtils.SortableLongToDouble(includeUpper?i:(i - 1L));
}
else
{
inclusiveUpperPoint = System.Double.PositiveInfinity;
}
if (inclusiveLowerPoint > inclusiveUpperPoint)
{
return(DocIdSet.EMPTY_DOCIDSET);
}
double[] values = Lucene.Net.Search.FieldCache_Fields.DEFAULT.GetDoubles(reader, field, (Lucene.Net.Search.DoubleParser)parser);
// we only request the usage of termDocs, if the range contains 0
return(new AnonymousClassFieldCacheDocIdSet(values, inclusiveLowerPoint, inclusiveUpperPoint, this, reader, (inclusiveLowerPoint <= 0.0 && inclusiveUpperPoint >= 0.0)));
}
/// <summary>we fake a double test using long2double conversion of NumericUtils </summary>
private void TestDoubleRange(int precisionStep)
{
System.String field = "ascfield" + precisionStep;
long lower = -1000L;
long upper = +2000L;
System.Double tempAux = (double)NumericUtils.SortableLongToDouble(lower);
System.Double tempAux2 = (double)NumericUtils.SortableLongToDouble(upper);
Query tq = NumericRangeQuery.NewDoubleRange(field, precisionStep, tempAux, tempAux2, true, true);
TopDocs tTopDocs = searcher.Search(tq, 1);
Assert.AreEqual(upper - lower + 1, tTopDocs.totalHits, "Returned count of range query must be equal to inclusive range length");
System.Double tempAux3 = (double)NumericUtils.SortableLongToDouble(lower);
System.Double tempAux4 = (double)NumericUtils.SortableLongToDouble(upper);
Filter tf = NumericRangeFilter.NewDoubleRange(field, precisionStep, tempAux3, tempAux4, true, true);
tTopDocs = searcher.Search(new MatchAllDocsQuery(), tf, 1);
Assert.AreEqual(upper - lower + 1, tTopDocs.totalHits, "Returned count of range filter must be equal to inclusive range length");
}