/// <summary>
/// Sole constructor. </summary>
public FacetResult(string dim, string[] path, float value, LabelAndValue[] labelValues, int childCount)
{
this.Dim = dim;
this.Path = path;
this.Value = value;
this.LabelValues = labelValues;
this.ChildCount = childCount;
}
public override bool Equals(object other)
{
if ((other is LabelAndValue) == false)
{
return false;
}
LabelAndValue _other = (LabelAndValue)other;
return Label.Equals(_other.Label, StringComparison.Ordinal) && Value.Equals(_other.Value);
}
public override bool Equals(object _other)
{
if ((_other is LabelAndValue) == false)
{
return(false);
}
LabelAndValue other = (LabelAndValue)_other;
return(label.Equals(other.label) && value.Equals(other.value));
}
public override bool Equals(object other)
{
if ((other is LabelAndValue) == false)
{
return(false);
}
LabelAndValue _other = (LabelAndValue)other;
return(Label.Equals(_other.Label) && Value.Equals(_other.Value));
}
/// <summary>
/// Note: if you use a counting <see cref="Facets"/> implementation, you can amortize the
/// sampled counts by calling this method. Uses the <see cref="FacetsConfig"/> and
/// the <see cref="IndexSearcher"/> to determine the upper bound for each facet value.
/// </summary>
public virtual FacetResult AmortizeFacetCounts(FacetResult res, FacetsConfig config, IndexSearcher searcher)
{
if (res == null || totalHits <= sampleSize)
{
return(res);
}
LabelAndValue[] fixedLabelValues = new LabelAndValue[res.LabelValues.Length];
IndexReader reader = searcher.IndexReader;
DimConfig dimConfig = config.GetDimConfig(res.Dim);
// +2 to prepend dimension, append child label
string[] childPath = new string[res.Path.Length + 2];
childPath[0] = res.Dim;
Array.Copy(res.Path, 0, childPath, 1, res.Path.Length); // reuse
for (int i = 0; i < res.LabelValues.Length; i++)
{
childPath[res.Path.Length + 1] = res.LabelValues[i].Label;
string fullPath = FacetsConfig.PathToString(childPath, childPath.Length);
int max = reader.DocFreq(new Term(dimConfig.IndexFieldName, fullPath));
int correctedCount = (int)((double)res.LabelValues[i].Value / samplingRate);
correctedCount = Math.Min(max, correctedCount);
fixedLabelValues[i] = new LabelAndValue(res.LabelValues[i].Label, correctedCount);
}
// cap the total count on the total number of non-deleted documents in the reader
int correctedTotalCount = (int)res.Value;
if (correctedTotalCount > 0)
{
correctedTotalCount = Math.Min(reader.NumDocs, (int)((double)res.Value / samplingRate));
}
return(new FacetResult(res.Dim, res.Path, correctedTotalCount, fixedLabelValues, res.ChildCount));
}
public override FacetResult GetTopChildren(int topN, string dim, params string[] path)
{
if (dim.Equals(Field) == false)
{
throw new System.ArgumentException("invalid dim \"" + dim + "\"; should be \"" + Field + "\"");
}
if (path.Length != 0)
{
throw new System.ArgumentException("path.length should be 0");
}
LabelAndValue[] labelValues = new LabelAndValue[Counts.Length];
for (int i = 0; i < Counts.Length; i++)
{
labelValues[i] = new LabelAndValue(Ranges[i].Label, Counts[i]);
}
return new FacetResult(dim, path, TotCount, labelValues, labelValues.Length);
}
/// <summary>
/// Note: if you use a counting <seealso cref="Facets"/> implementation, you can amortize the
/// sampled counts by calling this method. Uses the <seealso cref="FacetsConfig"/> and
/// the <seealso cref="IndexSearcher"/> to determine the upper bound for each facet value.
/// </summary>
public virtual FacetResult AmortizeFacetCounts(FacetResult res, FacetsConfig config, IndexSearcher searcher)
{
if (res == null || totalHits <= sampleSize)
{
return res;
}
LabelAndValue[] fixedLabelValues = new LabelAndValue[res.LabelValues.Length];
IndexReader reader = searcher.IndexReader;
DimConfig dimConfig = config.GetDimConfig(res.Dim);
// +2 to prepend dimension, append child label
string[] childPath = new string[res.Path.Length + 2];
childPath[0] = res.Dim;
Array.Copy(res.Path, 0, childPath, 1, res.Path.Length); // reuse
for (int i = 0; i < res.LabelValues.Length; i++)
{
childPath[res.Path.Length + 1] = res.LabelValues[i].label;
string fullPath = FacetsConfig.PathToString(childPath, childPath.Length);
int max = reader.DocFreq(new Term(dimConfig.IndexFieldName, fullPath));
int correctedCount = (int)((double)res.LabelValues[i].value / samplingRate);
correctedCount = Math.Min(max, correctedCount);
fixedLabelValues[i] = new LabelAndValue(res.LabelValues[i].label, correctedCount);
}
// cap the total count on the total number of non-deleted documents in the reader
int correctedTotalCount = (int)res.Value;
if (correctedTotalCount > 0)
{
correctedTotalCount = Math.Min(reader.NumDocs, (int)((double)res.Value / samplingRate));
}
return new FacetResult(res.Dim, res.Path, correctedTotalCount, fixedLabelValues, res.ChildCount);
}
/// <summary>
/// Private constructor for shared parameters to be called by public constructors.
/// </summary>
private FacetResult(string dim, string[] path, LabelAndValue[] labelValues, int childCount)
{
this.Dim = dim;
this.Path = path;
this.LabelValues = labelValues;
this.ChildCount = childCount;
}
/// <summary>
/// Constructor for <see cref="int"/> <paramref name="value"/>. Makes the <see cref="ToString()"/> method
/// print the <paramref name="value"/> as an <see cref="int"/> with no decimal.
/// </summary>
public FacetResult(string dim, string[] path, int value, LabelAndValue[] labelValues, int childCount)
: this(dim, path, labelValues, childCount)
{
this.Value = value;
this.TypeOfValue = typeof(int);
}
