org.springframework.scheduling.quartz.QuartzJobBean Maven / Gradle / Ivy
/*
* Copyright 2002-2014 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.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.SchedulerException;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.PropertyAccessorFactory;
/**
* Simple implementation of the Quartz Job interface, applying the
* passed-in JobDataMap and also the SchedulerContext as bean property
* values. This is appropriate because a new Job instance will be created
* for each execution. JobDataMap entries will override SchedulerContext
* entries with the same keys.
*
* For example, let's assume that the JobDataMap contains a key
* "myParam" with value "5": The Job implementation can then expose
* a bean property "myParam" of type int to receive such a value,
* i.e. a method "setMyParam(int)". This will also work for complex
* types like business objects etc.
*
*
Note that the preferred way to apply dependency injection
* to Job instances is via a JobFactory: that is, to specify
* {@link SpringBeanJobFactory} as Quartz JobFactory (typically via
* {@link SchedulerFactoryBean#setJobFactory} SchedulerFactoryBean's "jobFactory" property}).
* This allows to implement dependency-injected Quartz Jobs without
* a dependency on Spring base classes.
*
* @author Juergen Hoeller
* @since 18.02.2004
* @see org.quartz.JobExecutionContext#getMergedJobDataMap()
* @see org.quartz.Scheduler#getContext()
* @see SchedulerFactoryBean#setSchedulerContextAsMap
* @see SpringBeanJobFactory
* @see SchedulerFactoryBean#setJobFactory
*/
public abstract class QuartzJobBean implements Job {
/**
* This implementation applies the passed-in job data map as bean property
* values, and delegates to {@code executeInternal} afterwards.
* @see #executeInternal
*/
@Override
public final void execute(JobExecutionContext context) throws JobExecutionException {
try {
BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(this);
MutablePropertyValues pvs = new MutablePropertyValues();
pvs.addPropertyValues(context.getScheduler().getContext());
pvs.addPropertyValues(context.getMergedJobDataMap());
bw.setPropertyValues(pvs, true);
}
catch (SchedulerException ex) {
throw new JobExecutionException(ex);
}
executeInternal(context);
}
/**
* Execute the actual job. The job data map will already have been
* applied as bean property values by execute. The contract is
* exactly the same as for the standard Quartz execute method.
* @see #execute
*/
protected abstract void executeInternal(JobExecutionContext context) throws JobExecutionException;
}