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.repeat.policy;
18
19 import org.springframework.batch.repeat.CompletionPolicy;
20 import org.springframework.batch.repeat.RepeatStatus;
21 import org.springframework.batch.repeat.RepeatContext;
22 import org.springframework.batch.repeat.context.RepeatContextSupport;
23
24 /**
25 * Very simple base class for {@link CompletionPolicy} implementations.
26 *
27 * @author Dave Syer
28 *
29 */
30 public class CompletionPolicySupport implements CompletionPolicy {
31
32 /**
33 * If exit status is not continuable return <code>true</code>, otherwise
34 * delegate to {@link #isComplete(RepeatContext)}.
35 *
36 * @see org.springframework.batch.repeat.CompletionPolicy#isComplete(org.springframework.batch.repeat.RepeatContext,
37 * RepeatStatus)
38 */
39 public boolean isComplete(RepeatContext context, RepeatStatus result) {
40 if (result != null && !result.isContinuable()) {
41 return true;
42 }
43 else {
44 return isComplete(context);
45 }
46 }
47
48 /**
49 * Always true.
50 *
51 * @see org.springframework.batch.repeat.CompletionPolicy#isComplete(org.springframework.batch.repeat.RepeatContext)
52 */
53 public boolean isComplete(RepeatContext context) {
54 return true;
55 }
56
57 /**
58 * Build a new {@link RepeatContextSupport} and return it.
59 *
60 * @see org.springframework.batch.repeat.CompletionPolicy#start(RepeatContext)
61 */
62 public RepeatContext start(RepeatContext context) {
63 return new RepeatContextSupport(context);
64 }
65
66 /**
67 * Increment the context so the counter is up to date. Do nothing else.
68 *
69 * @see org.springframework.batch.repeat.CompletionPolicy#update(org.springframework.batch.repeat.RepeatContext)
70 */
71 public void update(RepeatContext context) {
72 if (context instanceof RepeatContextSupport) {
73 ((RepeatContextSupport) context).increment();
74 }
75 }
76
77 }