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package org.apache.lucene.search;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import org.apache.lucene.document.Document;
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import org.apache.lucene.index.IndexReader;
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import org.apache.lucene.index.RandomIndexWriter;
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import org.apache.lucene.search.BooleanClause.Occur;
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import org.apache.lucene.store.Directory;
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import org.apache.lucene.util.LuceneTestCase;
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public class TestTopScoreDocCollector extends LuceneTestCase {
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public void testOutOfOrderCollection() throws Exception {
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Directory dir = newDirectory();
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RandomIndexWriter writer = new RandomIndexWriter(random, dir);
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for (int i = 0; i < 10; i++) {
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writer.addDocument(new Document());
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boolean[] inOrder = new boolean[] { false, true };
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String[] actualTSDCClass = new String[] {
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"OutOfOrderTopScoreDocCollector",
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"InOrderTopScoreDocCollector"
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BooleanQuery bq = new BooleanQuery();
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// Add a Query with SHOULD, since bw.scorer() returns BooleanScorer2
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// which delegates to BS if there are no mandatory clauses.
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bq.add(new MatchAllDocsQuery(), Occur.SHOULD);
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// Set minNrShouldMatch to 1 so that BQ will not optimize rewrite to return
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// the clause instead of BQ.
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bq.setMinimumNumberShouldMatch(1);
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IndexReader reader = writer.getReader();
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IndexSearcher searcher = newSearcher(reader);
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for (int i = 0; i < inOrder.length; i++) {
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TopDocsCollector<ScoreDoc> tdc = TopScoreDocCollector.create(3, inOrder[i]);
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assertEquals("org.apache.lucene.search.TopScoreDocCollector$" + actualTSDCClass[i], tdc.getClass().getName());
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searcher.search(new MatchAllDocsQuery(), tdc);
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ScoreDoc[] sd = tdc.topDocs().scoreDocs;
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assertEquals(3, sd.length);
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for (int j = 0; j < sd.length; j++) {
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assertEquals("expected doc Id " + j + " found " + sd[j].doc, j, sd[j].doc);