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Spring Framework example source code file (AdaptableJobFactory.java)

This example Spring Framework source code file (AdaptableJobFactory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

adaptablejobfactory, delegatingjob, exception, exception, illegalargumentexception, job, job, jobfactory, object, object, runnable, schedulerexception, schedulerexception, unable

The Spring Framework AdaptableJobFactory.java source code

/*
 * Copyright 2002-2006 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.scheduling.quartz;

import org.quartz.Job;
import org.quartz.SchedulerException;
import org.quartz.spi.JobFactory;
import org.quartz.spi.TriggerFiredBundle;

/**
 * JobFactory implementation that supports {@link java.lang.Runnable}
 * objects as well as standard Quartz {@link org.quartz.Job} instances.
 *
 * @author Juergen Hoeller
 * @since 2.0
 * @see DelegatingJob
 * @see #adaptJob(Object)
 */
public class AdaptableJobFactory implements JobFactory {

	public Job newJob(TriggerFiredBundle bundle) throws SchedulerException {
		try {
			Object jobObject = createJobInstance(bundle);
			return adaptJob(jobObject);
		}
		catch (Exception ex) {
			throw new SchedulerException("Job instantiation failed", ex);
		}
	}

	/**
	 * Create an instance of the specified job class.
	 * <p>Can be overridden to post-process the job instance.
	 * @param bundle the TriggerFiredBundle from which the JobDetail
	 * and other info relating to the trigger firing can be obtained
	 * @return the job instance
	 * @throws Exception if job instantiation failed
	 */
	protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
		return bundle.getJobDetail().getJobClass().newInstance();
	}

	/**
	 * Adapt the given job object to the Quartz Job interface.
	 * <p>The default implementation supports straight Quartz Jobs
	 * as well as Runnables, which get wrapped in a DelegatingJob.
	 * @param jobObject the original instance of the specified job class
	 * @return the adapted Quartz Job instance
	 * @throws Exception if the given job could not be adapted
	 * @see DelegatingJob
	 */
	protected Job adaptJob(Object jobObject) throws Exception {
		if (jobObject instanceof Job) {
			return (Job) jobObject;
		}
		else if (jobObject instanceof Runnable) {
			return new DelegatingJob((Runnable) jobObject);
		}
		else {
			throw new IllegalArgumentException("Unable to execute job class [" + jobObject.getClass().getName() +
					"]: only [org.quartz.Job] and [java.lang.Runnable] supported.");
		}
	}

}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework AdaptableJobFactory.java source code file:

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