/// <summary>
/// f(source) = a/(m*float(source)+b)
/// </summary>
/// <param name="source"></param>
/// <param name="m"></param>
/// <param name="a"></param>
/// <param name="b"></param>
public ReciprocalFloatFunction(ValueSource source, float m, float a, float b)
{
this.source = source;
this.m = m;
this.a = a;
this.b = b;
}
public ValueSourceFilter(Filter startingFilter, ValueSource source, double min, double max)
{
if (startingFilter == null)
{
throw new ArgumentException("please provide a non-null startingFilter; you can use QueryWrapperFilter(MatchAllDocsQuery) as a no-op filter", "startingFilter");
}
this.startingFilter = startingFilter;
this.source = source;
this.min = min;
this.max = max;
}
public MultiValueSource(ValueSource other)
{
this.other = other;
}
public Query MakeQueryWithValueSource(SpatialArgs args, ValueSource valueSource)
{
var bq = new BooleanQuery();
var spatial = MakeFilter(args);
bq.Add(new ConstantScoreQuery(spatial), Occur.MUST);
// This part does the scoring
Query spatialRankingQuery = new FunctionQuery(valueSource);
bq.Add(spatialRankingQuery, Occur.MUST);
return bq;
}
/* scores[] are in docId order */
protected void checkValueSource(ValueSource vs, float[] scores, float delta)
{
FunctionQuery q = new FunctionQuery(vs);
// //TODO is there any point to this check?
// int expectedDocs[] = new int[scores.length];//fill with ascending 0....length-1
// for (int i = 0; i < expectedDocs.length; i++) {
// expectedDocs[i] = i;
// }
// CheckHits.checkHits(random(), q, "", indexSearcher, expectedDocs);
TopDocs docs = indexSearcher.Search(q, 1000); //calculates the score
for (int i = 0; i < docs.ScoreDocs.Length; i++)
{
ScoreDoc gotSD = docs.ScoreDocs[i];
float expectedScore = scores[gotSD.Doc];
assertEquals("Not equal for doc " + gotSD.Doc, expectedScore, gotSD.Score, delta);
}
CheckHits.checkExplanations(q, "", indexSearcher);
}
/// <summary> Create a value source query</summary>
/// <param name="valSrc">provides the values defines the function to be used for scoring
/// </param>
public ValueSourceQuery(ValueSource valSrc)
{
this.valSrc = valSrc;
}
public MultiValueSource(ValueSource other)
{
this.other = other;
}
/// <summary> Create a value source query</summary>
/// <param name="valSrc">provides the values defines the function to be used for scoring
/// </param>
public ValueSourceQuery(ValueSource valSrc)
{
this.valSrc = valSrc;
}
public FunctionQuery(ValueSource func)
{
this.func = func;
}
public CachingDoubleValueSource(ValueSource source)
{
this.source = source;
cache = new Dictionary<int, double>();
}
