package org.apache.lucene.sandbox.queries;
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* 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
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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import java.io.IOException;
import java.util.HashSet;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.*;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.TestUtil;
public class DuplicateFilterTest extends LuceneTestCase {
private static final String KEY_FIELD = "url";
private Directory directory;
private IndexReader reader;
TermQuery tq = new TermQuery(new Term("text", "lucene"));
private IndexSearcher searcher;
@Override
public void setUp() throws Exception {
super.setUp();
directory = newDirectory();
RandomIndexWriter writer = new RandomIndexWriter(random(), directory, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())).setMergePolicy(newLogMergePolicy()));
//Add series of docs with filterable fields : url, text and dates flags
addDoc(writer, "http://lucene.apache.org", "lucene 1.4.3 available", "20040101");
addDoc(writer, "http://lucene.apache.org", "New release pending", "20040102");
addDoc(writer, "http://lucene.apache.org", "Lucene 1.9 out now", "20050101");
addDoc(writer, "http://www.bar.com", "Local man bites dog", "20040101");
addDoc(writer, "http://www.bar.com", "Dog bites local man", "20040102");
addDoc(writer, "http://www.bar.com", "Dog uses Lucene", "20050101");
addDoc(writer, "http://lucene.apache.org", "Lucene 2.0 out", "20050101");
addDoc(writer, "http://lucene.apache.org", "Oops. Lucene 2.1 out", "20050102");
// Until we fix LUCENE-2348, the index must
// have only 1 segment:
writer.forceMerge(1);
reader = writer.getReader();
writer.close();
searcher = newSearcher(reader);
}
@Override
public void tearDown() throws Exception {
reader.close();
directory.close();
super.tearDown();
}
private void addDoc(RandomIndexWriter writer, String url, String text, String date) throws IOException {
Document doc = new Document();
doc.add(newStringField(KEY_FIELD, url, Field.Store.YES));
doc.add(newTextField("text", text, Field.Store.YES));
doc.add(newTextField("date", date, Field.Store.YES));
writer.addDocument(doc);
}
public void testDefaultFilter() throws Throwable {
DuplicateFilter df = new DuplicateFilter(KEY_FIELD);
HashSet<String> results = new HashSet<>();
ScoreDoc[] hits = searcher.search(tq, df, 1000).scoreDocs;
for (ScoreDoc hit : hits) {
StoredDocument d = searcher.doc(hit.doc);
String url = d.get(KEY_FIELD);
assertFalse("No duplicate urls should be returned", results.contains(url));
results.add(url);
}
}
public void testNoFilter() throws Throwable {
HashSet<String> results = new HashSet<>();
ScoreDoc[] hits = searcher.search(tq, null, 1000).scoreDocs;
assertTrue("Default searching should have found some matches", hits.length > 0);
boolean dupsFound = false;
for (ScoreDoc hit : hits) {
StoredDocument d = searcher.doc(hit.doc);
String url = d.get(KEY_FIELD);
if (!dupsFound)
dupsFound = results.contains(url);
results.add(url);
}
assertTrue("Default searching should have found duplicate urls", dupsFound);
}
public void testFastFilter() throws Throwable {
DuplicateFilter df = new DuplicateFilter(KEY_FIELD);
df.setProcessingMode(DuplicateFilter.ProcessingMode.PM_FAST_INVALIDATION);
HashSet<String> results = new HashSet<>();
ScoreDoc[] hits = searcher.search(tq, df, 1000).scoreDocs;
assertTrue("Filtered searching should have found some matches", hits.length > 0);
for (ScoreDoc hit : hits) {
StoredDocument d = searcher.doc(hit.doc);
String url = d.get(KEY_FIELD);
assertFalse("No duplicate urls should be returned", results.contains(url));
results.add(url);
}
assertEquals("Two urls found", 2, results.size());
}
public void testKeepsLastFilter() throws Throwable {
DuplicateFilter df = new DuplicateFilter(KEY_FIELD);
df.setKeepMode(DuplicateFilter.KeepMode.KM_USE_LAST_OCCURRENCE);
ScoreDoc[] hits = searcher.search(tq, df, 1000).scoreDocs;
assertTrue("Filtered searching should have found some matches", hits.length > 0);
for (ScoreDoc hit : hits) {
StoredDocument d = searcher.doc(hit.doc);
String url = d.get(KEY_FIELD);
DocsEnum td = TestUtil.docs(random(), reader,
KEY_FIELD,
new BytesRef(url),
MultiFields.getLiveDocs(reader),
null,
0);
int lastDoc = 0;
while (td.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
lastDoc = td.docID();
}
assertEquals("Duplicate urls should return last doc", lastDoc, hit.doc);
}
}
public void testKeepsFirstFilter() throws Throwable {
DuplicateFilter df = new DuplicateFilter(KEY_FIELD);
df.setKeepMode(DuplicateFilter.KeepMode.KM_USE_FIRST_OCCURRENCE);
ScoreDoc[] hits = searcher.search(tq, df, 1000).scoreDocs;
assertTrue("Filtered searching should have found some matches", hits.length > 0);
for (ScoreDoc hit : hits) {
StoredDocument d = searcher.doc(hit.doc);
String url = d.get(KEY_FIELD);
DocsEnum td = TestUtil.docs(random(), reader,
KEY_FIELD,
new BytesRef(url),
MultiFields.getLiveDocs(reader),
null,
0);
int lastDoc = 0;
td.nextDoc();
lastDoc = td.docID();
assertEquals("Duplicate urls should return first doc", lastDoc, hit.doc);
}
}
}