1 /*
2 * Copyright 2006-2007 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.springframework.batch.sample.support;
18
19 import java.util.List;
20
21 import org.springframework.batch.item.ItemWriter;
22
23 /**
24 * Simulates temporary output trouble - requires to retry 3 times to pass
25 * successfully.
26 *
27 * @author Robert Kasanicky
28 */
29 public class RetrySampleItemWriter<T> implements ItemWriter<T> {
30
31 private int counter = 0;
32
33 public void write(List<? extends T> items) throws Exception {
34 int current = counter;
35 counter += items.size();
36 if (current < 3 && (counter >= 2 || counter >= 3)) {
37 throw new RuntimeException("Temporary error");
38 }
39 }
40
41 /**
42 * @return number of times {@link #write(List)} method was called.
43 */
44 public int getCounter() {
45 return counter;
46 }
47
48 }