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.configuration.support;
17
18 import org.springframework.batch.core.Job;
19 import org.springframework.batch.core.configuration.JobFactory;
20 import org.springframework.context.ApplicationContext;
21 import org.springframework.context.ConfigurableApplicationContext;
22
23 /**
24 * A {@link JobFactory} that creates its own {@link ApplicationContext} and
25 * pulls a bean out when asked to create a {@link Job}.
26 *
27 * @author Dave Syer
28 *
29 */
30 public class ApplicationContextJobFactory implements JobFactory {
31
32 private final Job job;
33
34 /**
35 * @param jobName the id of the {@link Job} in the application context to be
36 * created
37 * @param applicationContextFactory a factory for an application context
38 * containing a job with the job name provided
39 */
40 public ApplicationContextJobFactory(String jobName, ApplicationContextFactory applicationContextFactory) {
41 ConfigurableApplicationContext context = applicationContextFactory.createApplicationContext();
42 this.job = context.getBean(jobName, Job.class);
43 }
44
45 /**
46 * Create an {@link ApplicationContext} from the factory provided and pull
47 * out a bean with the name given during initialization.
48 *
49 * @see org.springframework.batch.core.configuration.JobFactory#createJob()
50 */
51 @Override
52 public final Job createJob() {
53 return job;
54 }
55
56 /**
57 * Just return the name of instance passed in on initialization.
58 *
59 * @see JobFactory#getJobName()
60 */
61 @Override
62 public String getJobName() {
63 return job.getName();
64 }
65
66 }