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The Core Camel Java DSL based router

There is a newer version: 4.6.0

/**
 * 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;

import java.util.List;

/**
 * Implementations support navigating a graph where you can traverse forward and each next
 * returns a {@link List} of outputs of type T that can contain 0..n nodes.
 *
 * @version 
 */
public interface Navigate {

    /**
     * Next group of outputs
     * 
     * Important only invoke this once, as this method do not carry state, and is not intended to be used in a while loop,
     * but used by a if statement instead.
     *
     * @return next group or null if no more outputs
     */
    List next();

    /**
     * Are there more outputs?
     * 
     * Important only invoke this once, as this method do not carry state, and is not intended to be used in a while loop,
     * but used by a if statement instead.
     *
     * @return true if more outputs
     */
    boolean hasNext();

}