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.component.ref;
018    
019    import java.util.Map;
020    
021    import org.apache.camel.Endpoint;
022    import org.apache.camel.impl.DefaultComponent;
023    
024    /**
025     * Component for lookup of existing endpoints bound in the {@link org.apache.camel.spi.Registry}.
026     * <p/>
027     * This component uses the <tt>ref:</tt> notation instead of the mostly common <tt>uri:</tt> notation. 
028     */
029    public class RefComponent extends DefaultComponent {
030    
031        protected Endpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception {
032            // lets remove the scheme from the URI
033            int index = uri.indexOf(":");
034            String name = uri;
035            if (index >= 0) {
036                name = uri.substring(index + 1);
037            }
038            return lookupEndpoint(name, parameters);
039        }
040    
041        /**
042         * Looks up an endpoint for a given name.
043         *
044         * Derived classes could use this name as a logical name and look it up on some registry.
045         *
046         * The default implementation will look up the name in the registry of the {@link #getCamelContext()} property
047         */
048        protected Endpoint lookupEndpoint(String name, Map parameters) {
049            return getCamelContext().getRegistry().lookup(name, Endpoint.class);
050        }
051    }