/*
* Copyright 2002-2010 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.integration.aggregator;
import org.springframework.messaging.Message;
/**
* Default implementation of {@link CorrelationStrategy}. Uses a header
* attribute to determine the correlation key value.
*
* @author Marius Bogoevici
*/
public class HeaderAttributeCorrelationStrategy implements CorrelationStrategy {
private String attributeName;
public HeaderAttributeCorrelationStrategy(String attributeName) {
this.attributeName = attributeName;
}
public Object getCorrelationKey(Message<?> message) {
return message.getHeaders().get(this.attributeName);
}
}