| 1 | /* |
| 2 | * Copyright 2006-2013 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 | package org.springframework.batch.core.launch.support; |
| 17 | |
| 18 | import org.springframework.batch.core.JobParameters; |
| 19 | import org.springframework.batch.core.JobParametersBuilder; |
| 20 | import org.springframework.batch.core.JobParametersIncrementer; |
| 21 | |
| 22 | /** |
| 23 | * @author Dave Syer |
| 24 | */ |
| 25 | public class RunIdIncrementer implements JobParametersIncrementer { |
| 26 | |
| 27 | private static String RUN_ID_KEY = "run.id"; |
| 28 | |
| 29 | private String key = RUN_ID_KEY; |
| 30 | |
| 31 | /** |
| 32 | * The name of the run id in the job parameters. Defaults to "run.id". |
| 33 | * |
| 34 | * @param key the key to set |
| 35 | */ |
| 36 | public void setKey(String key) { |
| 37 | this.key = key; |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Increment the run.id parameter (starting with 1). |
| 42 | */ |
| 43 | @Override |
| 44 | public JobParameters getNext(JobParameters parameters) { |
| 45 | |
| 46 | JobParameters params = (parameters == null) ? new JobParameters() : parameters; |
| 47 | |
| 48 | long id = params.getLong(key, 0L) + 1; |
| 49 | return new JobParametersBuilder(params).addLong(key, id).toJobParameters(); |
| 50 | } |
| 51 | |
| 52 | } |