final float[] scores = new float[NUM_DOCS];
float lastScore = 0.0f;
// default similarity should put docs with shorter length first
searcher = new IndexSearcher(store, false);
searcher.search(new TermQuery(new Term("field", "word")), new Collector() {
private int docBase = 0;
private Scorer scorer;
@Override
public final void collect(int doc) throws IOException {
scores[doc + docBase] = scorer.score();
}
@Override
public void setNextReader(IndexReader reader, int docBase) {
this.docBase = docBase;
}
@Override
public void setScorer(Scorer scorer) throws IOException {
this.scorer = scorer;
}
@Override
public boolean acceptsDocsOutOfOrder() {
return true;
}
});
searcher.close();
lastScore = Float.MAX_VALUE;
for (int i = 0; i < NUM_DOCS; i++) {
String msg = "i=" + i + ", "+scores[i]+" <= "+lastScore;
assertTrue(msg, scores[i] <= lastScore);
//System.out.println(msg);
lastScore = scores[i];
}
// override the norms to be inverted
Similarity s = new DefaultSimilarity() {
@Override
public float lengthNorm(String fieldName, int numTokens) {
return numTokens;
}
};
FieldNormModifier fnm = new FieldNormModifier(store, s);
fnm.reSetNorms("field");
// new norm (with default similarity) should put longer docs first
searcher = new IndexSearcher(store, false);
searcher.search(new TermQuery(new Term("field", "word")), new Collector() {
private int docBase = 0;
private Scorer scorer;
@Override
public final void collect(int doc) throws IOException {
scores[doc + docBase] = scorer.score();