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Spring Retry provides an abstraction around retrying failed operations, with an emphasis on declarative control of the process and policy-based bahaviour that is easy to extend and customize. For instance, you can configure a plain POJO operation to retry if it fails, based on the type of exception, and with a fixed or exponential backoff.

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/*
 * Copyright 2006-2007 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.retry.backoff;

/**
 * Simple {@link Sleeper} implementation that just waits on a local Object.
 * 
 * @author Dave Syer
 * 
 */
public class ObjectWaitSleeper implements Sleeper {

	/*
	 * (non-Javadoc)
	 * @see org.springframework.batch.retry.backoff.Sleeper#sleep(long)
	 */
	public void sleep(long backOffPeriod) throws InterruptedException {
		Object mutex = new Object();
		synchronized (mutex) {
			mutex.wait(backOffPeriod);
		}
	}

}