001 /**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements. See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 package org.apache.camel.util;
019
020 import org.apache.camel.Endpoint;
021 import org.apache.camel.Exchange;
022 import org.apache.camel.NoSuchEndpointException;
023
024 /**
025 * Some helper methods for working with {@link Exchange} objects
026 *
027 * @version $Revision: 532790 $
028 */
029 public class ExchangeHelper {
030
031 /**
032 * Attempts to resolve the endpoint for the given value
033 *
034 * @param exchange the message exchange being processed
035 * @param value the value which can be an {@link Endpoint} or an object which provides a String representation
036 * of an endpoint via {@link #toString()}
037 *
038 * @return the endpoint
039 * @throws NoSuchEndpointException if the endpoint cannot be resolved
040 */
041 @SuppressWarnings({"unchecked"})
042 public static <E extends Exchange> Endpoint<E> resolveEndpoint(E exchange, Object value) throws NoSuchEndpointException {
043 Endpoint<E> endpoint;
044 if (value instanceof Endpoint) {
045 endpoint = (Endpoint<E>) value;
046 }
047 else {
048 String uri = value.toString();
049 endpoint = (Endpoint<E>) exchange.getContext().getEndpoint(uri);
050 if (endpoint == null) {
051 throw new NoSuchEndpointException(uri);
052 }
053 }
054 return endpoint;
055 }
056 }