package org.apache.lucene.search;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BooleanQuery.BooleanWeight;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
public class TestBooleanScorer extends LuceneTestCase
{
private static final String FIELD = "category";
public void testMethod() throws Exception {
Directory directory = newDirectory();
String[] values = new String[] { "1", "2", "3", "4" };
RandomIndexWriter writer = new RandomIndexWriter(random(), directory);
for (int i = 0; i < values.length; i++) {
Document doc = new Document();
doc.add(newStringField(FIELD, values[i], Field.Store.YES));
writer.addDocument(doc);
}
IndexReader ir = writer.getReader();
writer.close();
BooleanQuery booleanQuery1 = new BooleanQuery();
booleanQuery1.add(new TermQuery(new Term(FIELD, "1")), BooleanClause.Occur.SHOULD);
booleanQuery1.add(new TermQuery(new Term(FIELD, "2")), BooleanClause.Occur.SHOULD);
BooleanQuery query = new BooleanQuery();
query.add(booleanQuery1, BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(FIELD, "9")), BooleanClause.Occur.MUST_NOT);
IndexSearcher indexSearcher = newSearcher(ir);
ScoreDoc[] hits = indexSearcher.search(query, null, 1000).scoreDocs;
assertEquals("Number of matched documents", 2, hits.length);
ir.close();
directory.close();
}
public void testEmptyBucketWithMoreDocs() throws Exception {
// This test checks the logic of nextDoc() when all sub scorers have docs
// beyond the first bucket (for example). Currently, the code relies on the
// 'more' variable to work properly, and this test ensures that if the logic
// changes, we have a test to back it up.
Directory directory = newDirectory();
RandomIndexWriter writer = new RandomIndexWriter(random(), directory);
writer.commit();
IndexReader ir = writer.getReader();
writer.close();
IndexSearcher searcher = newSearcher(ir);
BooleanWeight weight = (BooleanWeight) new BooleanQuery().createWeight(searcher);
Scorer[] scorers = new Scorer[] {new Scorer(weight) {
private int doc = -1;
@Override public float score() { return 0; }
@Override public int freq() { return 0; }
@Override public int docID() { return doc; }
@Override public int nextDoc() {
return doc = doc == -1 ? 3000 : NO_MORE_DOCS;
}
@Override public int advance(int target) {
return doc = target <= 3000 ? 3000 : NO_MORE_DOCS;
}
@Override
public long cost() {
return 1;
}
}};
BooleanScorer bs = new BooleanScorer(weight, false, 1, Arrays.asList(scorers), null, scorers.length);
final List<Integer> hits = new ArrayList<Integer>();
bs.score(new Collector() {
int docBase;
@Override
public void setScorer(Scorer scorer) {
}
@Override
public void collect(int doc) {
hits.add(docBase+doc);
}
@Override
public void setNextReader(AtomicReaderContext context) {
docBase = context.docBase;
}
@Override
public boolean acceptsDocsOutOfOrder() {
return true;
}
});
assertEquals("should have only 1 hit", 1, hits.size());
assertEquals("hit should have been docID=3000", 3000, hits.get(0).intValue());
ir.close();
directory.close();
}
public void testMoreThan32ProhibitedClauses() throws Exception {
final Directory d = newDirectory();
final RandomIndexWriter w = new RandomIndexWriter(random(), d);
Document doc = new Document();
doc.add(new TextField("field", "0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33", Field.Store.NO));
w.addDocument(doc);
doc = new Document();
doc.add(new TextField("field", "33", Field.Store.NO));
w.addDocument(doc);
final IndexReader r = w.getReader();
w.close();
final IndexSearcher s = newSearcher(r);
final BooleanQuery q = new BooleanQuery();
for(int term=0;term<33;term++) {
q.add(new BooleanClause(new TermQuery(new Term("field", ""+term)),
BooleanClause.Occur.MUST_NOT));
}
q.add(new BooleanClause(new TermQuery(new Term("field", "33")),
BooleanClause.Occur.SHOULD));
final int[] count = new int[1];
s.search(q, new Collector() {
@Override
public void setScorer(Scorer scorer) {
// Make sure we got BooleanScorer:
final Class<?> clazz = scorer instanceof AssertingScorer ? ((AssertingScorer) scorer).getIn().getClass() : scorer.getClass();
assertEquals("Scorer is implemented by wrong class", BooleanScorer.class.getName() + "$BucketScorer", clazz.getName());
}
@Override
public void collect(int doc) {
count[0]++;
}
@Override
public void setNextReader(AtomicReaderContext context) {
}
@Override
public boolean acceptsDocsOutOfOrder() {
return true;
}
});
assertEquals(1, count[0]);
r.close();
d.close();
}
}