/*
    * Copyright 2006-2007 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.sample.quartz;
  
  import java.util.Date;
  import java.util.Map;
  import java.util.Map.Entry;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.quartz.JobExecutionContext;
  import org.springframework.batch.core.JobExecutionException;
  import org.springframework.batch.core.JobParameters;
  import org.springframework.batch.core.JobParametersBuilder;
  import org.springframework.batch.core.configuration.JobLocator;
  import org.springframework.batch.core.launch.JobLauncher;
  import org.springframework.scheduling.quartz.QuartzJobBean;
  
  /**
   * @author Dave Syer
   * 
   */
  public class JobLauncherDetails extends QuartzJobBean {
  
  	/**
  	 * Special key in job data map for the name of a job to run.
  	 */
  	static final String JOB_NAME = "jobName";
  
  	private static Log log = LogFactory.getLog(JobLauncherDetails.class);
  
  	private JobLocator jobLocator;
  
  	private JobLauncher jobLauncher;
  
  	/**
  	 * Public setter for the {@link JobLocator}.
  	 * @param jobLocator the {@link JobLocator} to set
  	 */
  	public void setJobLocator(JobLocator jobLocator) {
  		this.jobLocator = jobLocator;
  	}
  
  	/**
  	 * Public setter for the {@link JobLauncher}.
  	 * @param jobLauncher the {@link JobLauncher} to set
  	 */
  	public void setJobLauncher(JobLauncher jobLauncher) {
  		this.jobLauncher = jobLauncher;
  	}
  
  	@SuppressWarnings("unchecked")
  	protected void executeInternal(JobExecutionContext context) {
  		Map<String, Object> jobDataMap = context.getMergedJobDataMap();
  		String jobName = (String) jobDataMap.get(JOB_NAME);
  		log.info("Quartz trigger firing with Spring Batch jobName="+jobName);
  		JobParameters jobParameters = getJobParametersFromJobMap(jobDataMap);
  		try {
  			jobLauncher.run(jobLocator.getJob(jobName), jobParameters);
  		}
  		catch (JobExecutionException e) {
  			log.error("Could not execute job.", e);
  		}
  	}
  
  	/*
  	 * Copy parameters that are of the correct type over to
  	 * {@link JobParameters}, ignoring jobName.
  	 * 
  	 * @return a {@link JobParameters} instance
  	 */
  	private JobParameters getJobParametersFromJobMap(Map<String, Object> jobDataMap) {
  
  		JobParametersBuilder builder = new JobParametersBuilder();
  
  		for (Entry<String, Object> entry : jobDataMap.entrySet()) {
  			String key = entry.getKey();
  			Object value = entry.getValue();
  			if (value instanceof String && !key.equals(JOB_NAME)) {
  				builder.addString(key, (String) value);
  			}
  			else if (value instanceof Float || value instanceof Double) {
  				builder.addDouble(key, ((Number) value).doubleValue());
  			}
  			else if (value instanceof Integer || value instanceof Long) {
  				builder.addLong(key, ((Number)value).longValue());
 			}
 			else if (value instanceof Date) {
 				builder.addDate(key, (Date) value);
 			}
 			else {
 				log.debug("JobDataMap contains values which are not job parameters (ignoring).");
 			}
 		}
 
 		return builder.toJobParameters();
 
 	}
 
 }