| 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.ExitStatus; |
| 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 | * Return <code>true</code> if exit status is not continuable, otherwise |
| 34 | * delegate to {@link #isComplete(RepeatContext)}. |
| 35 | * |
| 36 | * @see org.springframework.batch.repeat.CompletionPolicy#isComplete(org.springframework.batch.repeat.RepeatContext, |
| 37 | * ExitStatus) |
| 38 | */ |
| 39 | public boolean isComplete(RepeatContext context, ExitStatus 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 | } |