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 java.util.ArrayList; 020 import java.util.Collection; 021 import java.util.Collections; 022 import java.util.List; 023 024 import javax.xml.bind.annotation.XmlAccessType; 025 import javax.xml.bind.annotation.XmlAccessorType; 026 import javax.xml.bind.annotation.XmlElement; 027 import javax.xml.bind.annotation.XmlElementRef; 028 import javax.xml.bind.annotation.XmlRootElement; 029 030 import org.apache.camel.Endpoint; 031 import org.apache.camel.Predicate; 032 import org.apache.camel.Processor; 033 import org.apache.camel.impl.RouteContext; 034 import org.apache.camel.processor.ChoiceProcessor; 035 import org.apache.camel.processor.FilterProcessor; 036 037 /** 038 * @version $Revision: 1.1 $ 039 */ 040 @XmlRootElement(name = "choice") 041 @XmlAccessorType(XmlAccessType.FIELD) 042 public class ChoiceType extends ProcessorType { 043 @XmlElementRef 044 private List<InterceptorType> interceptors = new ArrayList<InterceptorType>(); 045 @XmlElementRef 046 private List<WhenType> whenClauses = new ArrayList<WhenType>(); 047 @XmlElement(required = false) 048 private OtherwiseType otherwise; 049 050 @Override 051 public String toString() { 052 return "Choice[ " + getWhenClauses() + " " + getOtherwise() + "]"; 053 } 054 055 @Override 056 public Processor createProcessor(RouteContext routeContext) throws Exception { 057 List<FilterProcessor> filters = new ArrayList<FilterProcessor>(); 058 for (WhenType whenClaus : whenClauses) { 059 filters.add(whenClaus.createProcessor(routeContext)); 060 } 061 Processor otherwiseProcessor = null; 062 if (otherwise != null) { 063 otherwiseProcessor = otherwise.createProcessor(routeContext); 064 } 065 return new ChoiceProcessor(filters, otherwiseProcessor); 066 } 067 068 // Fluent API 069 // ------------------------------------------------------------------------- 070 public ChoiceType when(Predicate predicate) { 071 getWhenClauses().add(new WhenType(predicate)); 072 return this; 073 } 074 075 public OtherwiseType otherwise() { 076 OtherwiseType answer = new OtherwiseType(); 077 setOtherwise(answer); 078 return answer; 079 } 080 081 public ChoiceType proceed() { 082 super.proceed(); 083 return this; 084 } 085 086 public ChoiceType to(Endpoint endpoint) { 087 super.to(endpoint); 088 return this; 089 } 090 091 public ChoiceType to(Collection<Endpoint> endpoints) { 092 super.to(endpoints); 093 return this; 094 } 095 096 public ChoiceType to(Endpoint... endpoints) { 097 super.to(endpoints); 098 return this; 099 } 100 101 public ChoiceType to(String uri) { 102 super.to(uri); 103 return this; 104 } 105 106 public ChoiceType to(String... uris) { 107 super.to(uris); 108 return this; 109 } 110 111 // Properties 112 // ------------------------------------------------------------------------- 113 public List<WhenType> getWhenClauses() { 114 return whenClauses; 115 } 116 117 public void setWhenClauses(List<WhenType> whenClauses) { 118 this.whenClauses = whenClauses; 119 } 120 121 public List<ProcessorType> getOutputs() { 122 if (otherwise != null) { 123 return otherwise.getOutputs(); 124 } else if (whenClauses.isEmpty()) { 125 return Collections.EMPTY_LIST; 126 } else { 127 WhenType when = whenClauses.get(whenClauses.size() - 1); 128 return when.getOutputs(); 129 } 130 } 131 132 public OtherwiseType getOtherwise() { 133 return otherwise; 134 } 135 136 public void setOtherwise(OtherwiseType otherwise) { 137 this.otherwise = otherwise; 138 } 139 140 public List<InterceptorType> getInterceptors() { 141 return interceptors; 142 } 143 144 public void setInterceptors(List<InterceptorType> interceptors) { 145 this.interceptors = interceptors; 146 } 147 }