spring-boot/spring-boot-samples/spring-boot-sample-batch/src/main/java/sample/batch/SampleBatchApplication.java

/*
 * Copyright 2012-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package sample.batch;

import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.StepContribution;
import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
@EnableBatchProcessing
public class SampleBatchApplication {

	@Autowired
	private JobBuilderFactory jobs;

	@Autowired
	private StepBuilderFactory steps;

	@Bean
	protected Tasklet tasklet() {

		return new Tasklet() {
			@Override
			public RepeatStatus execute(StepContribution contribution,
					ChunkContext context) {
				return RepeatStatus.FINISHED;
			}
		};

	}

	@Bean
	public Job job() throws Exception {
		return this.jobs.get("job").start(step1()).build();
	}

	@Bean
	protected Step step1() throws Exception {
		return this.steps.get("step1").tasklet(tasklet()).build();
	}

	public static void main(String[] args) {
		// System.exit is common for Batch applications since the exit code can be used to
		// drive a workflow
		System.exit(SpringApplication
				.exit(SpringApplication.run(SampleBatchApplication.class, args)));
	}

}