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CompositeRepeatListener.java
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CompositeRepeatListener.java
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/*
* Copyright 2006-2022 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.repeat.listener;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.batch.repeat.RepeatContext;
import org.springframework.batch.repeat.RepeatListener;
/**
* Allows a user to register one or more RepeatListeners to be notified on batch events.
*
* @author Dave Syer
*
*/
public class CompositeRepeatListener implements RepeatListener {
private List<RepeatListener> listeners = new ArrayList<>();
/**
* Default constrcutor
*/
public CompositeRepeatListener() {
}
/**
* Convenience constructor for setting the {@link RepeatListener}s.
*
* @param listeners {@link List} of RepeatListeners to be used by the CompositeRepeatListener.
*/
public CompositeRepeatListener(List<RepeatListener> listeners) {
setListeners(listeners);
}
/**
* Convenience constructor for setting the {@link RepeatListener}s.
*
* @param listeners array of RepeatListeners to be used by the CompositeRepeatListener.
*/
public CompositeRepeatListener(RepeatListener... listeners) {
setListeners(listeners);
}
/**
* Public setter for the listeners.
*
* @param listeners {@link List} of RepeatListeners to be used by the CompositeRepeatListener.
*/
public void setListeners(List<RepeatListener> listeners) {
this.listeners = listeners;
}
/**
* Public setter for the listeners.
*
* @param listeners array of RepeatListeners to be used by the CompositeRepeatListener.
*/
public void setListeners(RepeatListener[] listeners) {
this.listeners = Arrays.asList(listeners);
}
/**
* Register additional listener.
*
* @param listener the RepeatListener to be added to the list of listeners to be notified.
*/
public void register(RepeatListener listener) {
if (!listeners.contains(listener)) {
listeners.add(listener);
}
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.RepeatListener#after(org.springframework.batch.repeat.RepeatContext, org.springframework.batch.repeat.ExitStatus)
*/
@Override
public void after(RepeatContext context, RepeatStatus result) {
for (RepeatListener listener : listeners) {
listener.after(context, result);
}
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.RepeatListener#before(org.springframework.batch.repeat.RepeatContext)
*/
@Override
public void before(RepeatContext context) {
for (RepeatListener listener : listeners) {
listener.before(context);
}
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.RepeatListener#close(org.springframework.batch.repeat.RepeatContext)
*/
@Override
public void close(RepeatContext context) {
for (RepeatListener listener : listeners) {
listener.close(context);
}
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.RepeatListener#onError(org.springframework.batch.repeat.RepeatContext, java.lang.Throwable)
*/
@Override
public void onError(RepeatContext context, Throwable e) {
for (RepeatListener listener : listeners) {
listener.onError(context, e);
}
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.RepeatListener#open(org.springframework.batch.repeat.RepeatContext)
*/
@Override
public void open(RepeatContext context) {
for (RepeatListener listener : listeners) {
listener.open(context);
}
}
}