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    import static org.apache.camel.util.ObjectHelper.notNull;
029    
030    /**
031     * Base class for interceptor types.
032     *
033     * @version $Revision: 751357 $
034     */
035    @XmlRootElement(name = "interceptor")
036    @XmlAccessorType(XmlAccessType.FIELD)
037    public class InterceptorDefinition extends AbstractInterceptorDefinition {
038        @XmlAttribute(required = true)
039        private String ref;
040        @XmlTransient
041        private DelegateProcessor interceptor;
042    
043        public InterceptorDefinition() {
044        }
045    
046        public InterceptorDefinition(String ref) {
047            setRef(ref);
048        }
049    
050        public InterceptorDefinition(DelegateProcessor interceptor) {
051            this.interceptor = interceptor;
052        }
053    
054        @Override
055        public String toString() {
056            return "Interceptor[" + getLabel() + "]";
057        }
058    
059        @Override
060        public String getShortName() {
061            return "interceptor";
062        }
063    
064        @Override
065        public Processor createProcessor(RouteContext routeContext) throws Exception {
066            DelegateProcessor processor = createInterceptor(routeContext);
067            Processor child = createOutputsProcessor(routeContext);
068            processor.setProcessor(child);
069            return processor;
070        }
071    
072        public DelegateProcessor createInterceptor(RouteContext routeContext) {
073            if (interceptor == null) {
074                interceptor = routeContext.lookup(getRef(), DelegateProcessor.class);
075            }
076            notNull(interceptor, "registry entry called " + getRef(), this);
077            return interceptor;
078        }
079    
080        public String getRef() {
081            return ref;
082        }
083    
084        public void setRef(String ref) {
085            this.ref = ref;
086        }
087    
088        public String getLabel() {
089            if (ref != null) {
090                return "ref: " + ref;
091            } else if (interceptor != null) {
092                return interceptor.toString();
093            } else {
094                return "";
095            }
096        }
097        
098        /**
099         * Get the underlying {@link DelegateProcessor} implementation
100         */
101        @XmlTransient
102        public DelegateProcessor getInterceptor() {
103            return interceptor;
104        }
105    }