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 */ 017package org.apache.camel.model; 018 019import javax.xml.bind.annotation.XmlAccessType; 020import javax.xml.bind.annotation.XmlAccessorType; 021import javax.xml.bind.annotation.XmlAttribute; 022import javax.xml.bind.annotation.XmlRootElement; 023import javax.xml.bind.annotation.XmlTransient; 024 025import org.apache.camel.AsyncProcessor; 026import org.apache.camel.Processor; 027import org.apache.camel.Service; 028import org.apache.camel.processor.DelegateAsyncProcessor; 029import org.apache.camel.processor.DelegateSyncProcessor; 030import org.apache.camel.spi.Metadata; 031import org.apache.camel.spi.RouteContext; 032import org.apache.camel.util.ObjectHelper; 033 034/** 035 * Calls a Camel processor 036 * 037 * @version 038 */ 039@Metadata(label = "eip,endpoint") 040@XmlRootElement(name = "process") 041@XmlAccessorType(XmlAccessType.FIELD) 042public class ProcessDefinition extends NoOutputDefinition<ProcessDefinition> { 043 @XmlAttribute(required = true) 044 private String ref; 045 @XmlTransient 046 private Processor processor; 047 048 public ProcessDefinition() { 049 } 050 051 public ProcessDefinition(Processor processor) { 052 this.processor = processor; 053 } 054 055 @Override 056 public String toString() { 057 if (ref != null) { 058 return "process[ref:" + ref + "]"; 059 } else { 060 // do not invoke toString on the processor as we do not know what it would do 061 String id = ObjectHelper.getIdentityHashCode(processor); 062 return "process[Processor@" + id + "]"; 063 } 064 } 065 066 @Override 067 public String getLabel() { 068 if (ref != null) { 069 return "ref:" + ref; 070 } else if (processor != null) { 071 // do not invoke toString on the processor as we do not know what it would do 072 String id = ObjectHelper.getIdentityHashCode(processor); 073 return "Processor@" + id; 074 } else { 075 return ""; 076 } 077 } 078 079 public String getRef() { 080 return ref; 081 } 082 083 /** 084 * Reference to the {@link Processor} to lookup in the registry to use. 085 */ 086 public void setRef(String ref) { 087 this.ref = ref; 088 } 089 090 @Override 091 public Processor createProcessor(RouteContext routeContext) { 092 Processor answer = processor; 093 if (processor == null) { 094 ObjectHelper.notNull(ref, "ref", this); 095 answer = routeContext.mandatoryLookup(getRef(), Processor.class); 096 } 097 098 // ensure its wrapped in a Service so we can manage it from eg. JMX 099 // (a Processor must be a Service to be enlisted in JMX) 100 if (!(answer instanceof Service)) { 101 if (answer instanceof AsyncProcessor) { 102 // the processor is async by nature so use the async delegate 103 answer = new DelegateAsyncProcessor(answer); 104 } else { 105 // the processor is sync by nature so use the sync delegate 106 answer = new DelegateSyncProcessor(answer); 107 } 108 } 109 return answer; 110 } 111}