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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.ranking;
import com.yahoo.search.result.FeatureData;
import com.yahoo.search.result.Hit;
import com.yahoo.tensor.Tensor;
import static com.yahoo.searchlib.rankingexpression.Reference.RANKING_EXPRESSION_WRAPPER;
import java.util.logging.Logger;
class WrappedHit implements Comparable<WrappedHit> {
private static final Logger logger = Logger.getLogger(WrappedHit.class.getName());
private final Hit hit;
private final FeatureData matchFeatures;
private int idx = -1;
private WrappedHit(Hit hit, FeatureData matchFeatures) {
this.hit = hit;
this.matchFeatures = matchFeatures;
}
static WrappedHit from(Hit hit) {
if (hit.getField("matchfeatures") instanceof FeatureData mf) {
return new WrappedHit(hit, mf);
} else {
return null;
}
}
double getScore() {
return hit.getRelevance().getScore();
}
void setScore(double value) {
hit.setRelevance(value);
}
int getIdx() {
if (idx < 0) {
throw new IllegalStateException("Missing index");
}
return idx;
}
void setIdx(int value) {
if (idx == value) {
return;
} else if (idx < 0) {
idx = value;
} else {
throw new IllegalArgumentException("Cannot re-assign index " + idx + " -> " + value);
}
}
public int compareTo(WrappedHit other) {
return hit.compareTo(other.hit);
}
Tensor getTensor(String argName) {
var asTensor = matchFeatures.getTensor(argName);
if (asTensor == null) {
asTensor = matchFeatures.getTensor(alternate(argName));
}
return asTensor;
}
private static final String RE_PREFIX = RANKING_EXPRESSION_WRAPPER + "(";
private static final String RE_SUFFIX = ")";
private static final int RE_PRE_LEN = RE_PREFIX.length();
private static final int RE_SUF_LEN = RE_SUFFIX.length();
// rankingExpression(foo) <-> foo
static String alternate(String argName) {
if (argName.startsWith(RE_PREFIX) && argName.endsWith(RE_SUFFIX)) {
return argName.substring(RE_PRE_LEN, argName.length() - RE_SUF_LEN);
} else {
return RE_PREFIX + argName + RE_SUFFIX;
}
}
}
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