Package org.apache.lucene.expressions
Class ExpressionRescorer
- java.lang.Object
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- org.apache.lucene.search.Rescorer
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- org.apache.lucene.search.SortRescorer
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- org.apache.lucene.expressions.ExpressionRescorer
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class ExpressionRescorer extends SortRescorer
ARescorer
that uses an expression to re-score first pass hits. Functionally this is the same asSortRescorer
(if you build theSort
usingExpression.getSortField(org.apache.lucene.expressions.Bindings, boolean)
), except for the explain method which gives more detail by showing the value of each variable.
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Field Summary
Fields Modifier and Type Field Description private Bindings
bindings
private Expression
expression
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Constructor Summary
Constructors Constructor Description ExpressionRescorer(Expression expression, Bindings bindings)
Uses the providedExpression
to assign second pass scores.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Explanation
explain(IndexSearcher searcher, Explanation firstPassExplanation, int docID)
Explains how the score for the specified document was computed.-
Methods inherited from class org.apache.lucene.search.SortRescorer
rescore
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Field Detail
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expression
private final Expression expression
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bindings
private final Bindings bindings
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Constructor Detail
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ExpressionRescorer
public ExpressionRescorer(Expression expression, Bindings bindings)
Uses the providedExpression
to assign second pass scores.
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Method Detail
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explain
public Explanation explain(IndexSearcher searcher, Explanation firstPassExplanation, int docID) throws java.io.IOException
Description copied from class:Rescorer
Explains how the score for the specified document was computed.- Overrides:
explain
in classSortRescorer
- Throws:
java.io.IOException
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