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.Processor;
026 import org.apache.camel.processor.DelegateProcessor;
027 import org.apache.camel.spi.RouteContext;
028
029 /**
030 * Base class for interceptor types.
031 *
032 * @version $Revision: 671918 $
033 */
034 @XmlRootElement(name = "interceptor")
035 @XmlAccessorType(XmlAccessType.FIELD)
036 public class InterceptorRef extends InterceptorType {
037 @XmlAttribute(required = true)
038 private String ref;
039 @XmlTransient
040 private DelegateProcessor interceptor;
041
042 public InterceptorRef() {
043 }
044
045 public InterceptorRef(String ref) {
046 setRef(ref);
047 }
048
049 public InterceptorRef(DelegateProcessor interceptor) {
050 this.interceptor = interceptor;
051 }
052
053 @Override
054 public String toString() {
055 return "Interceptor[" + getLabel() + "]";
056 }
057
058 @Override
059 public String getShortName() {
060 return "interceptor";
061 }
062
063 @Override
064 public Processor createProcessor(RouteContext routeContext) throws Exception {
065 DelegateProcessor processor = createInterceptor(routeContext);
066 Processor child = createOutputsProcessor(routeContext);
067 processor.setProcessor(child);
068 return processor;
069 }
070
071 public DelegateProcessor createInterceptor(RouteContext routeContext) {
072 if (interceptor == null) {
073 interceptor = routeContext.lookup(getRef(), DelegateProcessor.class);
074 }
075 if (interceptor == null) {
076 throw new IllegalArgumentException("No DelegateProcessor bean available for reference: " + getRef());
077 }
078 return interceptor;
079 }
080
081 public String getRef() {
082 return ref;
083 }
084
085 public void setRef(String ref) {
086 this.ref = ref;
087 }
088
089 public String getLabel() {
090 if (ref != null) {
091 return "ref: " + ref;
092 } else if (interceptor != null) {
093 return interceptor.toString();
094 } else {
095 return "";
096 }
097 }
098
099 /**
100 * Get the underlying {@link DelegateProcessor} implementation
101 *
102 * @return the {@link DelegateProcessor}
103 */
104 @XmlTransient
105 public DelegateProcessor getInterceptor() {
106 return interceptor;
107 }
108 }