org.elasticsearch.common.lucene.search.function.ScriptScoreFunction Maven / Gradle / Ivy
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* the Apache License, Version 2.0 (the "License"); you may
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.common.lucene.search.function;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.search.Explanation;
import org.elasticsearch.script.ExplainableSearchScript;
import org.elasticsearch.script.SearchScript;
import java.util.Map;
public class ScriptScoreFunction extends ScoreFunction {
private final String sScript;
private final Map params;
private final SearchScript script;
public ScriptScoreFunction(String sScript, Map params, SearchScript script) {
super(CombineFunction.REPLACE);
this.sScript = sScript;
this.params = params;
this.script = script;
}
@Override
public void setNextReader(AtomicReaderContext ctx) {
script.setNextReader(ctx);
}
@Override
public double score(int docId, float subQueryScore) {
script.setNextDocId(docId);
script.setNextScore(subQueryScore);
return script.runAsDouble();
}
@Override
public Explanation explainScore(int docId, Explanation subQueryExpl) {
Explanation exp;
if (script instanceof ExplainableSearchScript) {
script.setNextDocId(docId);
script.setNextScore(subQueryExpl.getValue());
exp = ((ExplainableSearchScript) script).explain(subQueryExpl);
} else {
double score = score(docId, subQueryExpl.getValue());
exp = new Explanation(CombineFunction.toFloat(score), "script score function: composed of:");
exp.addDetail(subQueryExpl);
}
return exp;
}
@Override
public String toString() {
return "script[" + sScript + "], params [" + params + "]";
}
}