001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.impl;
018
019 import org.apache.camel.CamelContext;
020 import org.apache.camel.Component;
021 import org.apache.camel.Endpoint;
022 import org.apache.camel.EndpointResolver;
023 import org.apache.camel.util.FactoryFinder;
024 import org.apache.camel.util.ObjectHelper;
025
026 /**
027 * An implementation of {@link org.apache.camel.EndpointResolver} that delegates to
028 * other {@link EndpointResolver} which are selected based on the uri prefix.
029 *
030 * The delegate {@link EndpointResolver} are associated with uri prefixes by
031 * adding a property file with the same uri prefix in the
032 * META-INF/services/org/apache/camel/EndpointResolver/
033 * directory on the classpath.
034 *
035 * @version $Revision: 520985 $
036 */
037 public class DefaultEndpointResolver<E> implements EndpointResolver<E> {
038 static final private FactoryFinder endpointResolverFactory = new FactoryFinder("META-INF/services/org/apache/camel/EndpointResolver/");
039
040 public Endpoint<E> resolveEndpoint(CamelContext container, String uri) throws Exception {
041 EndpointResolver resolver = getDelegate(uri);
042 return resolver.resolveEndpoint(container, uri);
043 }
044
045 public Component resolveComponent(CamelContext container, String uri) throws Exception {
046 EndpointResolver resolver = getDelegate(uri);
047 return resolver.resolveComponent(container, uri);
048 }
049
050 private EndpointResolver getDelegate(String uri) {
051 String splitURI[] = ObjectHelper.splitOnCharacter(uri, ":", 2);
052 if( splitURI[1] == null )
053 throw new IllegalArgumentException("Invalid URI, it did not contain a scheme: "+uri);
054 EndpointResolver resolver;
055 try {
056 resolver = (EndpointResolver) endpointResolverFactory.newInstance(splitURI[0]);
057 } catch (Throwable e) {
058 throw new IllegalArgumentException("Invalid URI, no EndpointResolver registered for scheme : "+splitURI[0], e);
059 }
060 return resolver;
061 }
062
063 }