+++ /dev/null
-package org.apache.lucene.search.similar;
-
-/**
- * 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.io.IOException;
-import java.io.StringReader;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import org.apache.lucene.analysis.MockAnalyzer;
-import org.apache.lucene.analysis.MockTokenizer;
-import org.apache.lucene.document.Document;
-import org.apache.lucene.document.Field;
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.index.RandomIndexWriter;
-import org.apache.lucene.search.BooleanClause;
-import org.apache.lucene.search.BooleanQuery;
-import org.apache.lucene.search.IndexSearcher;
-import org.apache.lucene.search.TermQuery;
-import org.apache.lucene.store.Directory;
-import org.apache.lucene.util.LuceneTestCase;
-
-public class TestMoreLikeThis extends LuceneTestCase {
- private Directory directory;
- private IndexReader reader;
- private IndexSearcher searcher;
-
- @Override
- public void setUp() throws Exception {
- super.setUp();
- directory = newDirectory();
- RandomIndexWriter writer = new RandomIndexWriter(random, directory);
-
- // Add series of docs with specific information for MoreLikeThis
- addDoc(writer, "lucene");
- addDoc(writer, "lucene release");
-
- reader = writer.getReader();
- writer.close();
- searcher = newSearcher(reader);
- }
-
- @Override
- public void tearDown() throws Exception {
- reader.close();
- searcher.close();
- directory.close();
- super.tearDown();
- }
-
- private void addDoc(RandomIndexWriter writer, String text) throws IOException {
- Document doc = new Document();
- doc.add(newField("text", text, Field.Store.YES, Field.Index.ANALYZED));
- writer.addDocument(doc);
- }
-
- public void testBoostFactor() throws Throwable {
- Map<String,Float> originalValues = getOriginalValues();
-
- MoreLikeThis mlt = new MoreLikeThis(reader);
- mlt.setAnalyzer(new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
- mlt.setMinDocFreq(1);
- mlt.setMinTermFreq(1);
- mlt.setMinWordLen(1);
- mlt.setFieldNames(new String[] {"text"});
- mlt.setBoost(true);
-
- // this mean that every term boost factor will be multiplied by this
- // number
- float boostFactor = 5;
- mlt.setBoostFactor(boostFactor);
-
- BooleanQuery query = (BooleanQuery) mlt.like(new StringReader(
- "lucene release"), "text");
- List<BooleanClause> clauses = query.clauses();
-
- assertEquals("Expected " + originalValues.size() + " clauses.",
- originalValues.size(), clauses.size());
-
- for (int i = 0; i < clauses.size(); i++) {
- BooleanClause clause = clauses.get(i);
- TermQuery tq = (TermQuery) clause.getQuery();
- Float termBoost = originalValues.get(tq.getTerm().text());
- assertNotNull("Expected term " + tq.getTerm().text(), termBoost);
-
- float totalBoost = termBoost.floatValue() * boostFactor;
- assertEquals("Expected boost of " + totalBoost + " for term '"
- + tq.getTerm().text() + "' got " + tq.getBoost(), totalBoost, tq
- .getBoost(), 0.0001);
- }
- }
-
- private Map<String,Float> getOriginalValues() throws IOException {
- Map<String,Float> originalValues = new HashMap<String,Float>();
- MoreLikeThis mlt = new MoreLikeThis(reader);
- mlt.setAnalyzer(new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
- mlt.setMinDocFreq(1);
- mlt.setMinTermFreq(1);
- mlt.setMinWordLen(1);
- mlt.setFieldNames(new String[] {"text"});
- mlt.setBoost(true);
- BooleanQuery query = (BooleanQuery) mlt.like(new StringReader(
- "lucene release"), "text");
- List<BooleanClause> clauses = query.clauses();
-
- for (int i = 0; i < clauses.size(); i++) {
- BooleanClause clause = clauses.get(i);
- TermQuery tq = (TermQuery) clause.getQuery();
- originalValues.put(tq.getTerm().text(), Float.valueOf(tq.getBoost()));
- }
- return originalValues;
- }
-
- // LUCENE-3326
- public void testMultiFields() throws Exception {
- MoreLikeThis mlt = new MoreLikeThis(reader);
- mlt.setAnalyzer(new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
- mlt.setMinDocFreq(1);
- mlt.setMinTermFreq(1);
- mlt.setMinWordLen(1);
- mlt.setFieldNames(new String[] {"text", "foobar"});
- mlt.like(new StringReader("this is a test"), "foobar");
- }
-
- // LUCENE-3326
- @Deprecated
- public void testMultiFieldsDeprecated() throws Exception {
- MoreLikeThis mlt = new MoreLikeThis(reader);
- mlt.setAnalyzer(new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
- mlt.setMinDocFreq(1);
- mlt.setMinTermFreq(1);
- mlt.setMinWordLen(1);
- mlt.setFieldNames(new String[] {"text", "foobar"});
- mlt.like(new StringReader("this is a test"));
- }
-}
fnp / pylucene.git / blobdiff