public virtual float ParseFloat(System.String value_Renamed)
{
try
{
return(Single.Parse(value_Renamed));
}
catch (System.OverflowException)
{
return(value_Renamed.StartsWith("-") ? float.PositiveInfinity : float.NegativeInfinity);
}
}
public override System.String ToString(System.String field)
{
System.Text.StringBuilder buffer = new System.Text.StringBuilder();
if (!Term.Field.Equals(field))
{
buffer.Append(Term.Field);
buffer.Append(":");
}
buffer.Append(Term.Text);
buffer.Append('~');
buffer.Append(Single.ToString(minimumSimilarity));
buffer.Append(ToStringUtils.Boost(Boost));
return(buffer.ToString());
}
// extract expected doc score from its ID Field: "ID7" --> 7.0
protected internal virtual float ExpectedFieldScore(System.String docIDFieldVal)
{
return(Single.Parse(docIDFieldVal.Substring(2)));
}
/// <summary> Assert that an explanation has the expected score, and optionally that its
/// sub-details max/sum/factor match to that score.
///
/// </summary>
/// <param name="q">String representation of the query for assertion messages
/// </param>
/// <param name="doc">Document ID for assertion messages
/// </param>
/// <param name="score">Real score value of doc with query q
/// </param>
/// <param name="deep">indicates whether a deep comparison of sub-Explanation details should be executed
/// </param>
/// <param name="expl">The Explanation to match against score
/// </param>
public static void VerifyExplanation(System.String q, int doc, float score, bool deep, Explanation expl)
{
float value_Renamed = expl.Value;
Assert.AreEqual(score, value_Renamed, EXPLAIN_SCORE_TOLERANCE_DELTA, q + ": score(doc=" + doc + ")=" + score + " != explanationScore=" + value_Renamed + " Explanation: " + expl);
if (!deep)
{
return;
}
Explanation[] detail = expl.GetDetails();
if (detail != null)
{
if (detail.Length == 1)
{
// simple containment, no matter what the description says,
// just verify contained expl has same score
VerifyExplanation(q, doc, score, deep, detail[0]);
}
else
{
// explanation must either:
// - end with one of: "product of:", "sum of:", "max of:", or
// - have "max plus <x> times others" (where <x> is float).
float x = 0;
System.String descr = expl.Description.ToLower();
bool productOf = descr.EndsWith("product of:");
bool sumOf = descr.EndsWith("sum of:");
bool maxOf = descr.EndsWith("max of:");
bool maxTimesOthers = false;
if (!(productOf || sumOf || maxOf))
{
// maybe 'max plus x times others'
int k1 = descr.IndexOf("max plus ");
if (k1 >= 0)
{
k1 += "max plus ".Length;
int k2 = descr.IndexOf(" ", k1);
try
{
x = Single.Parse(descr.Substring(k1, (k2) - (k1)).Trim());
if (descr.Substring(k2).Trim().Equals("times others of:"))
{
maxTimesOthers = true;
}
}
catch (System.FormatException)
{
}
}
}
Assert.IsTrue(productOf || sumOf || maxOf || maxTimesOthers, q + ": multi valued explanation description=\"" + descr + "\" must be 'max of plus x times others' or end with 'product of'" + " or 'sum of:' or 'max of:' - " + expl);
float sum = 0;
float product = 1;
float max = 0;
for (int i = 0; i < detail.Length; i++)
{
float dval = detail[i].Value;
VerifyExplanation(q, doc, dval, deep, detail[i]);
product *= dval;
sum += dval;
max = System.Math.Max(max, dval);
}
float combined = 0;
if (productOf)
{
combined = product;
}
else if (sumOf)
{
combined = sum;
}
else if (maxOf)
{
combined = max;
}
else if (maxTimesOthers)
{
combined = max + x * (sum - max);
}
else
{
Assert.IsTrue(false, "should never get here!");
}
Assert.AreEqual(combined, value_Renamed, EXPLAIN_SCORE_TOLERANCE_DELTA, q + ": actual subDetails combined==" + combined + " != value=" + value_Renamed + " Explanation: " + expl);
}
}
}
