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 }