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.Service;
027    import org.apache.camel.processor.WrapProcessor;
028    import org.apache.camel.spi.Required;
029    import org.apache.camel.spi.RouteContext;
030    import org.apache.camel.util.ObjectHelper;
031    
032    /**
033     * Represents an XML <process/> element
034     *
035     * @version 
036     */
037    @XmlRootElement(name = "process")
038    @XmlAccessorType(XmlAccessType.FIELD)
039    public class ProcessDefinition extends NoOutputDefinition<ProcessDefinition> {
040        @XmlAttribute(required = true)
041        private String ref;
042        @XmlTransient
043        private Processor processor;
044    
045        public ProcessDefinition() {
046        }
047    
048        public ProcessDefinition(Processor processor) {
049            this.processor = processor;
050        }
051    
052        @Override
053        public String getShortName() {
054            return "process";
055        }
056    
057        @Override
058        public String toString() {
059            return "process["
060                    + ((ref != null) ? "ref:" + ref : processor)
061                    + "]";
062        }
063    
064        @Override
065        public String getLabel() {
066            if (ref != null) {
067                return "ref:" + ref;
068            } else if (processor != null) {
069                return processor.toString();
070            } else {
071                return "";
072            }
073        }
074    
075        public String getRef() {
076            return ref;
077        }
078    
079        @Required
080        public void setRef(String ref) {
081            this.ref = ref;
082        }
083    
084        @Override
085        public Processor createProcessor(RouteContext routeContext) {
086            Processor answer = processor;
087            if (processor == null) {
088                ObjectHelper.notNull(ref, "ref", this);
089                answer = routeContext.lookup(getRef(), Processor.class);
090                ObjectHelper.notNull(answer, "registry entry called " + getRef(), this);
091            }
092    
093            // ensure its wrapped in a Service so we can manage it from eg. JMX
094            // (a Processor must be a Service to be enlisted in JMX)
095            if (!(answer instanceof Service)) {
096                answer = new WrapProcessor(answer, answer);
097            }
098            return answer;
099        }
100    }