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5 * The ASF licenses this file to You under the Apache License, Version 2.0
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9 * http://www.apache.org/licenses/LICENSE-2.0
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18 package org.apache.lucene.search;
20 import java.io.IOException;
21 import java.util.HashMap;
24 import org.apache.lucene.analysis.MockAnalyzer;
25 import org.apache.lucene.document.Document;
26 import org.apache.lucene.document.Field;
27 import org.apache.lucene.index.CorruptIndexException;
28 import org.apache.lucene.index.IndexReader;
29 import org.apache.lucene.index.IndexReader;
30 import org.apache.lucene.index.IndexWriter;
31 import org.apache.lucene.index.IndexWriterConfig.OpenMode;
32 import org.apache.lucene.index.Term;
33 import org.apache.lucene.store.Directory;
34 import org.apache.lucene.store.LockObtainFailedException;
35 import org.apache.lucene.util.LuceneTestCase;
36 import org.apache.lucene.util.FixedBitSet;
42 public class TestFilteredSearch extends LuceneTestCase {
44 private static final String FIELD = "category";
46 public void testFilteredSearch() throws CorruptIndexException, LockObtainFailedException, IOException {
47 boolean enforceSingleSegment = true;
48 Directory directory = newDirectory();
49 int[] filterBits = {1, 36};
50 SimpleDocIdSetFilter filter = new SimpleDocIdSetFilter(filterBits);
51 IndexWriter writer = new IndexWriter(directory, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)).setMergePolicy(newLogMergePolicy()));
52 searchFiltered(writer, directory, filter, enforceSingleSegment);
53 // run the test on more than one segment
54 enforceSingleSegment = false;
55 // reset - it is stateful
58 writer = new IndexWriter(directory, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)).setOpenMode(OpenMode.CREATE).setMaxBufferedDocs(10).setMergePolicy(newLogMergePolicy()));
59 // we index 60 docs - this will create 6 segments
60 searchFiltered(writer, directory, filter, enforceSingleSegment);
65 public void searchFiltered(IndexWriter writer, Directory directory, SimpleDocIdSetFilter filter, boolean fullMerge) {
67 for (int i = 0; i < 60; i++) {//Simple docs
68 Document doc = new Document();
69 doc.add(newField(FIELD, Integer.toString(i), Field.Store.YES, Field.Index.NOT_ANALYZED));
70 writer.addDocument(doc);
77 BooleanQuery booleanQuery = new BooleanQuery();
78 booleanQuery.add(new TermQuery(new Term(FIELD, "36")), BooleanClause.Occur.SHOULD);
81 IndexReader reader = IndexReader.open(directory);
82 IndexSearcher indexSearcher = new IndexSearcher(reader);
83 filter.setDocBases(indexSearcher.getIndexReader());
84 ScoreDoc[] hits = indexSearcher.search(booleanQuery, filter, 1000).scoreDocs;
85 assertEquals("Number of matched documents", 1, hits.length);
86 indexSearcher.close();
89 catch (IOException e) {
95 public static final class SimpleDocIdSetFilter extends Filter {
96 private final int[] docs;
98 private Map<IndexReader,Integer> docBasePerSub;
100 public SimpleDocIdSetFilter(int[] docs) {
104 public void setDocBases(IndexReader r) {
106 docBasePerSub = new HashMap<IndexReader,Integer>();
107 for(IndexReader sub : r.getSequentialSubReaders()) {
108 docBasePerSub.put(sub, maxDoc);
109 maxDoc += sub.maxDoc();
114 public DocIdSet getDocIdSet(IndexReader reader) {
115 final FixedBitSet set = new FixedBitSet(reader.maxDoc());
116 final int docBase = docBasePerSub.get(reader);
117 final int limit = docBase+reader.maxDoc();
118 for (;index < docs.length; index++) {
119 final int docId = docs[index];
122 if (docId >= docBase) {
123 set.set(docId-docBase);
126 return set.cardinality() == 0 ? null:set;