| /* |
| * 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.index; |
| |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.util.Collections; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.BaseTokenStreamTestCase; |
| import org.apache.lucene.analysis.CannedTokenStream; |
| import org.apache.lucene.analysis.Token; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.document.StringField; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.BytesRef; |
| |
| /** test tokenstream reuse by DefaultIndexingChain */ |
| public class TestFieldReuse extends BaseTokenStreamTestCase { |
| |
| public void testStringField() throws IOException { |
| StringField stringField = new StringField("foo", "bar", Field.Store.NO); |
| |
| // passing null |
| TokenStream ts = stringField.tokenStream(null, null); |
| assertTokenStreamContents(ts, |
| new String[] { "bar" }, |
| new int[] { 0 }, |
| new int[] { 3 } |
| ); |
| |
| // now reuse previous stream |
| stringField = new StringField("foo", "baz", Field.Store.NO); |
| TokenStream ts2 = stringField.tokenStream(null, ts); |
| assertSame(ts, ts); |
| assertTokenStreamContents(ts, |
| new String[] { "baz" }, |
| new int[] { 0 }, |
| new int[] { 3 } |
| ); |
| |
| // pass a bogus stream and ensure it's still ok |
| stringField = new StringField("foo", "beer", Field.Store.NO); |
| TokenStream bogus = new CannedTokenStream(); |
| ts = stringField.tokenStream(null, bogus); |
| assertNotSame(ts, bogus); |
| assertTokenStreamContents(ts, |
| new String[] { "beer" }, |
| new int[] { 0 }, |
| new int[] { 4 } |
| ); |
| } |
| |
| static class MyField implements IndexableField { |
| TokenStream lastSeen; |
| TokenStream lastReturned; |
| |
| @Override |
| public String name() { |
| return "foo"; |
| } |
| |
| @Override |
| public IndexableFieldType fieldType() { |
| return StringField.TYPE_NOT_STORED; |
| } |
| |
| @Override |
| public TokenStream tokenStream(Analyzer analyzer, TokenStream reuse) { |
| lastSeen = reuse; |
| return lastReturned = new CannedTokenStream(new Token("unimportant", 0, 10)); |
| } |
| |
| @Override |
| public BytesRef binaryValue() { |
| return null; |
| } |
| |
| @Override |
| public String stringValue() { |
| return null; |
| } |
| |
| @Override |
| public Reader readerValue() { |
| return null; |
| } |
| |
| @Override |
| public Number numericValue() { |
| return null; |
| } |
| } |
| |
| public void testIndexWriterActuallyReuses() throws IOException { |
| Directory dir = newDirectory(); |
| IndexWriterConfig iwc = new IndexWriterConfig(null); |
| IndexWriter iw = new IndexWriter(dir, iwc); |
| final MyField field1 = new MyField(); |
| iw.addDocument(Collections.singletonList(field1)); |
| TokenStream previous = field1.lastReturned; |
| assertNotNull(previous); |
| |
| final MyField field2 = new MyField(); |
| iw.addDocument(Collections.singletonList(field2)); |
| assertSame(previous, field2.lastSeen); |
| iw.close(); |
| dir.close(); |
| } |
| } |