internal ExpressionValueSource(Bindings bindings, Expression expression)
{
if (bindings == null)
{
throw new ArgumentNullException();
}
if (expression == null)
{
throw new ArgumentNullException();
}
this.expression = expression;
variables = new ValueSource[expression.Variables.Length];
bool needsScores = false;
for (int i = 0; i < variables.Length; i++)
{
ValueSource source = bindings.GetValueSource(expression.Variables[i]);
if (source is ScoreValueSource)
{
needsScores = true;
}
else
{
var valueSource = source as ExpressionValueSource;
if (valueSource != null)
{
if (valueSource.NeedsScores)
{
needsScores = true;
}
}
else
{
if (source == null)
{
throw new InvalidOperationException("Internal error. Variable (" + expression.Variables[i]
+ ") does not exist.");
}
}
}
variables[i] = source;
}
this.needsScores = needsScores;
}
internal ExpressionValueSource(Bindings bindings, Expression expression)
{
if (bindings == null)
{
throw new ArgumentNullException();
}
if (expression == null)
{
throw new ArgumentNullException();
}
this.expression = expression;
variables = new ValueSource[expression.variables.Length];
bool needsScores = false;
for (int i = 0; i < variables.Length; i++)
{
ValueSource source = bindings.GetValueSource(expression.variables[i]);
if (source is ScoreValueSource)
{
needsScores = true;
}
else
{
var valueSource = source as ExpressionValueSource;
if (valueSource != null)
{
if (valueSource.NeedsScores())
{
needsScores = true;
}
}
else
{
if (source == null)
{
throw new SystemException("Internal error. Variable (" + expression.variables[i]
+ ") does not exist.");
}
}
}
variables[i] = source;
}
this.needsScores = needsScores;
}
internal ExpressionValueSource(Bindings bindings, Expression expression)
{
if (bindings is null)
{
throw new ArgumentNullException(nameof(bindings)); // LUCENENET specific - changed from IllegalArgumentException to ArgumentNullException (.NET convention)
}
this.expression = expression ?? throw new ArgumentNullException(nameof(expression)); // LUCENENET specific - changed from IllegalArgumentException to ArgumentNullException (.NET convention)
variables = new ValueSource[expression.Variables.Length];
bool needsScores = false;
for (int i = 0; i < variables.Length; i++)
{
ValueSource source = bindings.GetValueSource(expression.Variables[i]);
if (source is ScoreValueSource)
{
needsScores = true;
}
else
{
if (source is ExpressionValueSource valueSource)
{
if (valueSource.NeedsScores)
{
needsScores = true;
}
}
else
{
if (source == null)
{
// LUCENENET specific: Changed from RuntimeException to InvalidOperationException to match .NET conventions
throw IllegalStateException.Create("Internal error. Variable (" + expression.Variables[i]
+ ") does not exist.");
}
}
}
variables[i] = source;
}
this.needsScores = needsScores;
}
public override Explanation Explain(IndexSearcher searcher, Explanation firstPassExplanation, int docID)
{
Explanation result = base.Explain(searcher, firstPassExplanation, docID);
IList <AtomicReaderContext> leaves = searcher.IndexReader.Leaves;
int subReader = ReaderUtil.SubIndex(docID, leaves);
AtomicReaderContext readerContext = leaves[subReader];
int docIDInSegment = docID - readerContext.DocBase;
var context = new Dictionary <string, object>();
var fakeScorer = new FakeScorer {
score = firstPassExplanation.Value, doc = docIDInSegment
};
context["scorer"] = fakeScorer;
foreach (string variable in expression.variables)
{
result.AddDetail(new Explanation((float)bindings.GetValueSource(variable).GetValues
(context, readerContext).DoubleVal(docIDInSegment), "variable \"" + variable + "\""
));
}
return(result);
}
