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.spi.Policy; 027 import org.apache.camel.spi.RouteContext; 028 import org.apache.camel.util.ObjectHelper; 029 030 /** 031 * Represents an XML <policy/> element 032 * 033 * @version $Revision: 751357 $ 034 */ 035 @XmlRootElement(name = "policy") 036 @XmlAccessorType(XmlAccessType.FIELD) 037 public class PolicyDefinition extends OutputDefinition<ProcessorDefinition> { 038 @XmlAttribute(required = true) 039 private String ref; 040 @XmlTransient 041 private Policy policy; 042 043 public PolicyDefinition() { 044 } 045 046 public PolicyDefinition(Policy policy) { 047 this.policy = policy; 048 } 049 050 @Override 051 public String toString() { 052 return "Policy[" + description() + "]"; 053 } 054 055 @Override 056 public String getShortName() { 057 return "policy"; 058 } 059 060 @Override 061 public String getLabel() { 062 if (ref != null) { 063 return "ref: " + ref; 064 } else if (policy != null) { 065 return policy.toString(); 066 } else { 067 return ""; 068 } 069 } 070 071 public String getRef() { 072 return ref; 073 } 074 075 public void setRef(String ref) { 076 this.ref = ref; 077 } 078 079 @Override 080 public Processor createProcessor(RouteContext routeContext) throws Exception { 081 Processor childProcessor = createOutputsProcessor(routeContext); 082 083 Policy policy = resolvePolicy(routeContext); 084 ObjectHelper.notNull(policy, "policy", this); 085 return policy.wrap(childProcessor); 086 } 087 088 protected Policy resolvePolicy(RouteContext routeContext) { 089 if (policy == null) { 090 policy = routeContext.lookup(getRef(), Policy.class); 091 } 092 return policy; 093 } 094 095 protected String description() { 096 if (policy != null) { 097 return policy.toString(); 098 } else { 099 return "ref: " + ref; 100 } 101 } 102 }