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 }