spring-batch CompositeJobExecutionListener 源码
spring-batch CompositeJobExecutionListener 代码
文件路径：/spring-batch-core/src/main/java/org/springframework/batch/core/listener/CompositeJobExecutionListener.java
/*
* Copyright 2006-2013 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
*
* https://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.listener;
import java.util.Iterator;
import java.util.List;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobExecutionListener;
import org.springframework.core.Ordered;
/**
* @author Dave Syer
*
*/
public class CompositeJobExecutionListener implements JobExecutionListener {
private OrderedComposite<JobExecutionListener> listeners = new OrderedComposite<>();
/**
* Public setter for the listeners.
* @param listeners list of {@link JobExecutionListener}s to be called when job
* execution events occur.
*/
public void setListeners(List<? extends JobExecutionListener> listeners) {
this.listeners.setItems(listeners);
}
/**
* Register additional listener.
* @param jobExecutionListener instance {@link JobExecutionListener} to be registered.
*/
public void register(JobExecutionListener jobExecutionListener) {
listeners.add(jobExecutionListener);
}
/**
* Call the registered listeners in reverse order, respecting and prioritising those
* that implement {@link Ordered}.
* @see org.springframework.batch.core.JobExecutionListener#afterJob(org.springframework.batch.core.JobExecution)
*/
@Override
public void afterJob(JobExecution jobExecution) {
for (Iterator<JobExecutionListener> iterator = listeners.reverse(); iterator.hasNext();) {
JobExecutionListener listener = iterator.next();
listener.afterJob(jobExecution);
}
}
/**
* Call the registered listeners in order, respecting and prioritising those that
* implement {@link Ordered}.
* @see org.springframework.batch.core.JobExecutionListener#beforeJob(org.springframework.batch.core.JobExecution)
*/
@Override
public void beforeJob(JobExecution jobExecution) {
for (Iterator<JobExecutionListener> iterator = listeners.iterator(); iterator.hasNext();) {
JobExecutionListener listener = iterator.next();
listener.beforeJob(jobExecution);
}
}
}
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