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Lucene example source code file (FuzzyLikeThisQueryTest.java)
The Lucene FuzzyLikeThisQueryTest.java source codepackage org.apache.lucene.search; /** * 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.util.HashSet; import org.apache.lucene.analysis.Analyzer; import org.apache.lucene.analysis.MockAnalyzer; 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.index.Term; import org.apache.lucene.store.Directory; import org.apache.lucene.util.LuceneTestCase; public class FuzzyLikeThisQueryTest extends LuceneTestCase { private Directory directory; private IndexSearcher searcher; private IndexReader reader; private Analyzer analyzer=new MockAnalyzer(random); @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 misspelt names addDoc(writer, "jonathon smythe","1"); addDoc(writer, "jonathan smith","2"); addDoc(writer, "johnathon smyth","3"); addDoc(writer, "johnny smith","4" ); addDoc(writer, "jonny smith","5" ); addDoc(writer, "johnathon smythe","6"); reader = writer.getReader(); writer.close(); searcher=newSearcher(reader); } @Override public void tearDown() throws Exception { searcher.close(); reader.close(); directory.close(); super.tearDown(); } private void addDoc(RandomIndexWriter writer, String name, String id) throws IOException { Document doc=new Document(); doc.add(newField("name",name,Field.Store.YES,Field.Index.ANALYZED)); doc.add(newField("id",id,Field.Store.YES,Field.Index.ANALYZED)); writer.addDocument(doc); } //Tests that idf ranking is not favouring rare mis-spellings over a strong edit-distance match public void testClosestEditDistanceMatchComesFirst() throws Throwable { FuzzyLikeThisQuery flt=new FuzzyLikeThisQuery(10,analyzer); flt.addTerms("smith", "name", 0.3f, 1); Query q=flt.rewrite(searcher.getIndexReader()); HashSet<Term> queryTerms=new HashSet Other Lucene examples (source code examples)Here is a short list of links related to this Lucene FuzzyLikeThisQueryTest.java source code file: |
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