/* 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.activiti.spring.components.jobexecutor;
import java.util.List;
import java.util.concurrent.RejectedExecutionException;
import org.activiti.engine.impl.jobexecutor.ExecuteJobsRunnable;
import org.activiti.engine.impl.jobexecutor.JobExecutor;
import org.springframework.core.task.TaskExecutor;
/**
*
* <p>
* This is a spring based implementation of the {@link JobExecutor} using spring abstraction {@link TaskExecutor}
* for performing background task execution.
* </p>
* <p>
* The idea behind this implementation is to externalize the configuration of the task executor, so it can leverage to
* Application servers controller thread pools, for example using the commonj API. The use of unmanaged thread in application servers
* is discouraged by the Java EE spec.
* </p>
*
* @author Pablo Ganga
*/
public class SpringJobExecutor extends JobExecutor {
private TaskExecutor taskExecutor;
public TaskExecutor getTaskExecutor() {
return taskExecutor;
}
/**
* Required spring injected {@link TaskExecutor}} implementation that will be used to execute runnable jobs.
*
* @param taskExecutor
*/
public void setTaskExecutor(TaskExecutor taskExecutor) {
this.taskExecutor = taskExecutor;
}
@Override
public void executeJobs(List<String> jobIds) {
try {
taskExecutor.execute(new ExecuteJobsRunnable(this, jobIds));
} catch (RejectedExecutionException e) {
rejectedJobsHandler.jobsRejected(this, jobIds);
}
}
@Override
protected void startExecutingJobs() {
startJobAcquisitionThread();
}
@Override
protected void stopExecutingJobs() {
stopJobAcquisitionThread();
taskExecutor = null;
}
}