Example of how to unwrap a proxied Spring Integration element (in this case a QueueChannel).

Foo.java

/*
 * Copyright 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
 *
 *      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 foo;

import org.springframework.aop.TargetSource;
import org.springframework.aop.framework.Advised;
import org.springframework.integration.MessageChannel;
import org.springframework.integration.channel.QueueChannel;

/**
 * @author Gary Russell
 */
public class Foo {

	private QueueChannel channel;

        // note you can't use a normal setter, unless you omit the getter - they have to have the same type
	public final void setProxyOrChannel(MessageChannel channel) {
		this.channel = this.extractTypeIfPossible(channel, QueueChannel.class);
	}

	public final QueueChannel getChannel() {
		return channel;
	}

	@SuppressWarnings("unchecked")
	<T> T extractTypeIfPossible(Object targetObject, Class<T> expectedType) {
		if (targetObject == null) {
			return null;
		}
		if (expectedType.isAssignableFrom(targetObject.getClass())) {
			return (T) targetObject;
		}
		if (targetObject instanceof Advised) {
			TargetSource targetSource = ((Advised) targetObject).getTargetSource();
			if (targetSource == null) {
				return null;
			}
			try {
				return extractTypeIfPossible(targetSource.getTarget(), expectedType);
			}
			catch (Exception e) {
				throw new IllegalStateException(e);
			}
		}
		return null;
	}


}