/*
    * Copyright 2012-2013 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 org.springframework.batch.core.configuration.annotation;
  
  import javax.annotation.PostConstruct;
  import javax.sql.DataSource;
  
  import org.springframework.batch.core.launch.JobLauncher;
  import org.springframework.batch.core.launch.support.SimpleJobLauncher;
  import org.springframework.batch.core.repository.JobRepository;
  import org.springframework.batch.core.repository.support.JobRepositoryFactoryBean;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.jdbc.datasource.DataSourceTransactionManager;
  import org.springframework.stereotype.Component;
  import org.springframework.transaction.PlatformTransactionManager;
  
  @Component
  public class DefaultBatchConfigurer implements BatchConfigurer {
  
  	private DataSource dataSource;
  	private PlatformTransactionManager transactionManager;
  	private JobRepository jobRepository;
  	private JobLauncher jobLauncher;
  
  	@Autowired
  	public void setDataSource(DataSource dataSource) {
  		this.dataSource = dataSource;
  		this.transactionManager = new DataSourceTransactionManager(dataSource);
  	}
  
  	protected DefaultBatchConfigurer() {}
  
  	public DefaultBatchConfigurer(DataSource dataSource) {
  		setDataSource(dataSource);
  	}
  
  	@Override
  	public JobRepository getJobRepository() {
  		return jobRepository;
  	}
  
  	@Override
  	public PlatformTransactionManager getTransactionManager() {
  		return transactionManager;
  	}
  
  	@Override
  	public JobLauncher getJobLauncher() {
  		return jobLauncher;
  	}
  
  	@PostConstruct
  	public void initialize() throws Exception {
  		this.jobRepository = createJobRepository();
  		this.jobLauncher = createJobLauncher();
  	}
  
  	private JobLauncher createJobLauncher() throws Exception {
  		SimpleJobLauncher jobLauncher = new SimpleJobLauncher();
  		jobLauncher.setJobRepository(jobRepository);
  		jobLauncher.afterPropertiesSet();
  		return jobLauncher;
  	}
  
  	protected JobRepository createJobRepository() throws Exception {
  		JobRepositoryFactoryBean factory = new JobRepositoryFactoryBean();
  		factory.setDataSource(dataSource);
  		factory.setTransactionManager(transactionManager);
  		factory.afterPropertiesSet();
  		return  (JobRepository) factory.getObject();
  	}
  
  }