camel-core/src/main/java/org/apache/camel/PollingConsumerAware.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.camel;

/**
 * A callback for {@link org.apache.camel.Exchange} when they are polled by a {@link org.apache.camel.PollingConsumer}.
 * <p/>
 * Is used if the {@link org.apache.camel.Exchange} needs to prepare, eg loading content that it otherwise would have
 * loaded lazy on demand.
 *
 * @version $Revision$
 */
public interface PollingConsumerAware {

    /**
     * Callback when an {@link org.apache.camel.Exchange} has been pooled.
     *
     * @param exchange  the exchange
     */
    void exchangePolled(Exchange exchange);
}