/*
* Copyright 2002-2009 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.timer;
import java.util.TimerTask;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.util.Assert;
/**
* Simple {@link java.util.TimerTask} adapter that delegates to a
* given {@link java.lang.Runnable}.
*
* <p>This is often preferable to deriving from TimerTask, to be able to
* implement an interface rather than extend an abstract base class.
*
* @author Juergen Hoeller
* @since 1.2.4
* @deprecated as of Spring 3.0, in favor of the <code>scheduling.concurrent</code>
* package which is based on Java 5's <code>java.util.concurrent.ExecutorService</code>
*/
@Deprecated
public class DelegatingTimerTask extends TimerTask {
private static final Log logger = LogFactory.getLog(DelegatingTimerTask.class);
private final Runnable delegate;
/**
* Create a new DelegatingTimerTask.
* @param delegate the Runnable implementation to delegate to
*/
public DelegatingTimerTask(Runnable delegate) {
Assert.notNull(delegate, "Delegate must not be null");
this.delegate = delegate;
}
/**
* Return the wrapped Runnable implementation.
*/
public final Runnable getDelegate() {
return this.delegate;
}
/**
* Delegates execution to the underlying Runnable, catching any exception
* or error thrown in order to continue scheduled execution.
*/
@Override
public void run() {
try {
this.delegate.run();
}
catch (Throwable ex) {
logger.error("Unexpected exception thrown from Runnable: " + this.delegate, ex);
// Do not throw the exception, else the main loop of the Timer might stop!
}
}
}
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