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.Expression;
026    import org.apache.camel.Processor;
027    import org.apache.camel.processor.idempotent.IdempotentConsumer;
028    import org.apache.camel.processor.idempotent.MessageIdRepository;
029    import org.apache.camel.spi.RouteContext;
030    
031    /**
032     * Represents an XML <idempotentConsumer/> element
033     *
034     * @version $Revision: 41908 $
035     */
036    @XmlRootElement(name = "idempotentConsumer")
037    @XmlAccessorType(XmlAccessType.FIELD)
038    public class IdempotentConsumerType extends ExpressionNode {
039        @XmlAttribute
040        private String messageIdRepositoryRef;
041        @XmlTransient
042        private MessageIdRepository messageIdRepository;
043    
044        public IdempotentConsumerType() {
045        }
046    
047        public IdempotentConsumerType(Expression messageIdExpression, MessageIdRepository messageIdRepository) {
048            super(messageIdExpression);
049            this.messageIdRepository = messageIdRepository;
050        }
051    
052        @Override
053        public String toString() {
054            return "IdempotentConsumer[ " + getExpression() + " -> " + getOutputs() + "]";
055        }
056    
057        public String getMessageIdRepositoryRef() {
058            return messageIdRepositoryRef;
059        }
060    
061        public void setMessageIdRepositoryRef(String messageIdRepositoryRef) {
062            this.messageIdRepositoryRef = messageIdRepositoryRef;
063        }
064    
065        public MessageIdRepository getMessageIdRepository() {
066            return messageIdRepository;
067        }
068    
069        public void setMessageIdRepository(MessageIdRepository messageIdRepository) {
070            this.messageIdRepository = messageIdRepository;
071        }
072    
073        @Override
074        public Processor createProcessor(RouteContext routeContext) throws Exception {
075            Processor childProcessor = routeContext.createProcessor(this);
076            MessageIdRepository messageIdRepository = resolveMessageIdRepository(routeContext);
077            return new IdempotentConsumer(getExpression().createExpression(routeContext), messageIdRepository,
078                                          childProcessor);
079        }
080    
081        public MessageIdRepository resolveMessageIdRepository(RouteContext routeContext) {
082            if (messageIdRepository == null) {
083                messageIdRepository = routeContext.lookup(messageIdRepositoryRef, MessageIdRepository.class);
084            }
085            return messageIdRepository;
086        }
087    }