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.Collection;
020
021 import javax.xml.bind.annotation.XmlAccessType;
022 import javax.xml.bind.annotation.XmlAccessorType;
023 import javax.xml.bind.annotation.XmlRootElement;
024 import javax.xml.bind.annotation.XmlTransient;
025
026 import org.apache.camel.Endpoint;
027 import org.apache.camel.Exchange;
028 import org.apache.camel.Expression;
029 import org.apache.camel.Processor;
030 import org.apache.camel.Route;
031 import org.apache.camel.impl.RouteContext;
032 import org.apache.camel.model.language.ExpressionType;
033 import org.apache.camel.processor.Aggregator;
034 import org.apache.camel.processor.aggregate.AggregationStrategy;
035 import org.apache.camel.processor.aggregate.UseLatestAggregationStrategy;
036
037 /**
038 * @version $Revision: 1.1 $
039 */
040 @XmlRootElement(name = "aggregator")
041 @XmlAccessorType(XmlAccessType.FIELD)
042 public class AggregatorType extends ExpressionNode {
043 @XmlTransient
044 private AggregationStrategy aggregationStrategy = new UseLatestAggregationStrategy();
045
046 public AggregatorType() {
047 }
048
049 public AggregatorType(Expression correlationExpression) {
050 super(correlationExpression);
051 }
052
053 public AggregatorType(ExpressionType correlationExpression) {
054 super(correlationExpression);
055 }
056
057 public AggregatorType(Expression correlationExpression, AggregationStrategy aggregationStrategy) {
058 super(correlationExpression);
059 this.aggregationStrategy = aggregationStrategy;
060 }
061
062 @Override
063 public String toString() {
064 return "Aggregator[ " + getExpression() + " -> " + getOutputs() + "]";
065 }
066
067 @Override
068 public void addRoutes(RouteContext routeContext, Collection<Route> routes) throws Exception {
069 Endpoint from = routeContext.getEndpoint();
070 final Processor processor = routeContext.createProcessor(this);
071 final Aggregator service = new Aggregator(from, processor, getExpression()
072 .createExpression(routeContext), aggregationStrategy);
073
074 Route route = new Route<Exchange>(from, service) {
075 @Override
076 public String toString() {
077 return "AggregatorRoute[" + getEndpoint() + " -> " + processor + "]";
078 }
079 };
080
081 routes.add(route);
082 }
083
084 public AggregationStrategy getAggregationStrategy() {
085 return aggregationStrategy;
086 }
087
088 public void setAggregationStrategy(AggregationStrategy aggregationStrategy) {
089 this.aggregationStrategy = aggregationStrategy;
090 }
091 }