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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.IndexWriter;
30 import org.apache.lucene.index.IndexWriterConfig.OpenMode;
31 import org.apache.lucene.index.Term;
32 import org.apache.lucene.store.Directory;
33 import org.apache.lucene.store.LockObtainFailedException;
34 import org.apache.lucene.util.LuceneTestCase;
35 import org.apache.lucene.util.FixedBitSet;
41 public class TestFilteredSearch extends LuceneTestCase {
43 private static final String FIELD = "category";
45 public void testFilteredSearch() throws CorruptIndexException, LockObtainFailedException, IOException {
46 boolean enforceSingleSegment = true;
47 Directory directory = newDirectory();
48 int[] filterBits = {1, 36};
49 SimpleDocIdSetFilter filter = new SimpleDocIdSetFilter(filterBits);
50 IndexWriter writer = new IndexWriter(directory, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)).setMergePolicy(newLogMergePolicy()));
51 searchFiltered(writer, directory, filter, enforceSingleSegment);
52 // run the test on more than one segment
53 enforceSingleSegment = false;
54 // reset - it is stateful
57 writer = new IndexWriter(directory, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)).setOpenMode(OpenMode.CREATE).setMaxBufferedDocs(10).setMergePolicy(newLogMergePolicy()));
58 // we index 60 docs - this will create 6 segments
59 searchFiltered(writer, directory, filter, enforceSingleSegment);
64 public void searchFiltered(IndexWriter writer, Directory directory, SimpleDocIdSetFilter filter, boolean optimize) {
66 for (int i = 0; i < 60; i++) {//Simple docs
67 Document doc = new Document();
68 doc.add(newField(FIELD, Integer.toString(i), Field.Store.YES, Field.Index.NOT_ANALYZED));
69 writer.addDocument(doc);
75 BooleanQuery booleanQuery = new BooleanQuery();
76 booleanQuery.add(new TermQuery(new Term(FIELD, "36")), BooleanClause.Occur.SHOULD);
79 IndexSearcher indexSearcher = new IndexSearcher(directory, true);
80 filter.setDocBases(indexSearcher.getIndexReader());
81 ScoreDoc[] hits = indexSearcher.search(booleanQuery, filter, 1000).scoreDocs;
82 assertEquals("Number of matched documents", 1, hits.length);
83 indexSearcher.close();
85 catch (IOException e) {
91 public static final class SimpleDocIdSetFilter extends Filter {
92 private final int[] docs;
94 private Map<IndexReader,Integer> docBasePerSub;
96 public SimpleDocIdSetFilter(int[] docs) {
100 public void setDocBases(IndexReader r) {
102 docBasePerSub = new HashMap<IndexReader,Integer>();
103 for(IndexReader sub : r.getSequentialSubReaders()) {
104 docBasePerSub.put(sub, maxDoc);
105 maxDoc += sub.maxDoc();
110 public DocIdSet getDocIdSet(IndexReader reader) {
111 final FixedBitSet set = new FixedBitSet(reader.maxDoc());
112 final int docBase = docBasePerSub.get(reader);
113 final int limit = docBase+reader.maxDoc();
114 for (;index < docs.length; index++) {
115 final int docId = docs[index];
118 if (docId >= docBase) {
119 set.set(docId-docBase);
122 return set.cardinality() == 0 ? null:set;