| /* |
| * 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.analysis; |
| |
| import java.io.IOException; |
| import java.util.Random; |
| |
| /** |
| * Throws IOException from random Tokenstream methods. |
| * <p> |
| * This can be used to simulate a buggy analyzer in IndexWriter, |
| * where we must delete the document but not abort everything in the buffer. |
| */ |
| public final class CrankyTokenFilter extends TokenFilter { |
| final Random random; |
| int thingToDo; |
| |
| /** Creates a new CrankyTokenFilter */ |
| public CrankyTokenFilter(TokenStream input, Random random) { |
| super(input); |
| this.random = random; |
| } |
| |
| @Override |
| public boolean incrementToken() throws IOException { |
| if (thingToDo == 0 && random.nextBoolean()) { |
| throw new IOException("Fake IOException from TokenStream.incrementToken()"); |
| } |
| return input.incrementToken(); |
| } |
| |
| @Override |
| public void end() throws IOException { |
| super.end(); |
| if (thingToDo == 1 && random.nextBoolean()) { |
| throw new IOException("Fake IOException from TokenStream.end()"); |
| } |
| } |
| |
| @Override |
| public void reset() throws IOException { |
| super.reset(); |
| thingToDo = random.nextInt(100); |
| if (thingToDo == 2 && random.nextBoolean()) { |
| throw new IOException("Fake IOException from TokenStream.reset()"); |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| super.close(); |
| if (thingToDo == 3 && random.nextBoolean()) { |
| throw new IOException("Fake IOException from TokenStream.close()"); |
| } |
| } |
| } |