| /* |
| * 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. |
| */ |
| package org.apache.lucene.search; |
| |
| |
| import java.io.IOException; |
| import java.util.LinkedList; |
| |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.MultiTerms; |
| import org.apache.lucene.index.RandomIndexWriter; |
| import org.apache.lucene.index.Term; |
| import org.apache.lucene.index.TermsEnum; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| /** |
| * This class tests PhrasePrefixQuery class. |
| */ |
| public class TestPhrasePrefixQuery extends LuceneTestCase { |
| |
| /** |
| * |
| */ |
| public void testPhrasePrefix() throws IOException { |
| Directory indexStore = newDirectory(); |
| RandomIndexWriter writer = new RandomIndexWriter(random(), indexStore); |
| Document doc1 = new Document(); |
| Document doc2 = new Document(); |
| Document doc3 = new Document(); |
| Document doc4 = new Document(); |
| Document doc5 = new Document(); |
| doc1.add(newTextField("body", "blueberry pie", Field.Store.YES)); |
| doc2.add(newTextField("body", "blueberry strudel", Field.Store.YES)); |
| doc3.add(newTextField("body", "blueberry pizza", Field.Store.YES)); |
| doc4.add(newTextField("body", "blueberry chewing gum", Field.Store.YES)); |
| doc5.add(newTextField("body", "piccadilly circus", Field.Store.YES)); |
| writer.addDocument(doc1); |
| writer.addDocument(doc2); |
| writer.addDocument(doc3); |
| writer.addDocument(doc4); |
| writer.addDocument(doc5); |
| IndexReader reader = writer.getReader(); |
| writer.close(); |
| |
| IndexSearcher searcher = newSearcher(reader); |
| |
| // PhrasePrefixQuery query1 = new PhrasePrefixQuery(); |
| MultiPhraseQuery.Builder query1builder = new MultiPhraseQuery.Builder(); |
| // PhrasePrefixQuery query2 = new PhrasePrefixQuery(); |
| MultiPhraseQuery.Builder query2builder = new MultiPhraseQuery.Builder(); |
| query1builder.add(new Term("body", "blueberry")); |
| query2builder.add(new Term("body", "strawberry")); |
| |
| LinkedList<Term> termsWithPrefix = new LinkedList<>(); |
| |
| // this TermEnum gives "piccadilly", "pie" and "pizza". |
| String prefix = "pi"; |
| TermsEnum te = MultiTerms.getTerms(reader, "body").iterator(); |
| te.seekCeil(new BytesRef(prefix)); |
| do { |
| String s = te.term().utf8ToString(); |
| if (s.startsWith(prefix)) { |
| termsWithPrefix.add(new Term("body", s)); |
| } else { |
| break; |
| } |
| } while (te.next() != null); |
| |
| query1builder.add(termsWithPrefix.toArray(new Term[0])); |
| query2builder.add(termsWithPrefix.toArray(new Term[0])); |
| |
| ScoreDoc[] result; |
| result = searcher.search(query1builder.build(), 1000).scoreDocs; |
| assertEquals(2, result.length); |
| |
| result = searcher.search(query2builder.build(), 1000).scoreDocs; |
| assertEquals(0, result.length); |
| reader.close(); |
| indexStore.close(); |
| } |
| } |