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.model;
018    
019    import javax.xml.bind.annotation.XmlAccessType;
020    import javax.xml.bind.annotation.XmlAccessorType;
021    import javax.xml.bind.annotation.XmlAttribute;
022    import javax.xml.bind.annotation.XmlRootElement;
023    import javax.xml.bind.annotation.XmlTransient;
024    
025    import org.apache.camel.impl.RouteContext;
026    import org.apache.camel.processor.DelegateProcessor;
027    
028    /**
029     * @version $Revision: 1.1 $
030     */
031    @XmlRootElement(name = "interceptor")
032    @XmlAccessorType(XmlAccessType.FIELD)
033    public class InterceptorRef extends InterceptorType {
034        @XmlAttribute(required = true)
035        private String ref;
036        @XmlTransient
037        private DelegateProcessor interceptor;
038    
039        public InterceptorRef() {
040        }
041    
042        public InterceptorRef(String ref) {
043            setRef(ref);
044        }
045    
046        public InterceptorRef(DelegateProcessor interceptor) {
047            this.interceptor = interceptor;
048        }
049    
050        @Override
051        public String toString() {
052            return "Interceptor[" + description() + "]";
053        }
054    
055        public DelegateProcessor createInterceptor(RouteContext routeContext) {
056            if (interceptor == null) {
057                interceptor = routeContext.lookup(getRef(), DelegateProcessor.class);
058            }
059            if (interceptor == null) {
060                throw new IllegalArgumentException("No DelegateProcessor bean available for reference: " + getRef());
061            }
062            return interceptor;
063        }
064    
065        public String getRef() {
066            return ref;
067        }
068    
069        public void setRef(String ref) {
070            this.ref = ref;
071        }
072    
073        protected String description() {
074            if (interceptor != null) {
075                return interceptor.toString();
076            } else {
077                return "ref:  " + ref;
078            }
079        }
080    }