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1   /*
2    * $Id: BankQuotesAggregationLogic.java 7976 2007-08-21 14:26:13Z dirk.olmes $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.examples.loanbroker.routers;
12  
13  import org.mule.examples.loanbroker.LocaleMessage;
14  import org.mule.examples.loanbroker.messages.LoanQuote;
15  import org.mule.impl.MuleMessage;
16  import org.mule.routing.inbound.EventGroup;
17  import org.mule.umo.UMOEvent;
18  import org.mule.umo.UMOMessage;
19  
20  import java.util.Iterator;
21  
22  import org.apache.commons.logging.Log;
23  import org.apache.commons.logging.LogFactory;
24  
25  public class BankQuotesAggregationLogic
26  {
27      /**
28       * logger used by this class
29       */
30      protected static final Log logger = LogFactory.getLog(BankQuotesAggregationLogic.class);
31      
32      public static UMOMessage aggregateEvents(EventGroup events) throws Exception
33      {
34          LoanQuote lowestQuote = null;
35          LoanQuote quote = null;
36          UMOEvent event = null;
37  
38          for (Iterator iterator = events.iterator(); iterator.hasNext();)
39          {
40              event = (UMOEvent)iterator.next();
41              quote = (LoanQuote)event.getTransformedMessage();
42              logger.info(LocaleMessage.processingQuote(quote));
43  
44              if (lowestQuote == null)
45              {
46                  lowestQuote = quote;
47              }
48              else
49              {
50                  if (quote.getInterestRate() < lowestQuote.getInterestRate())
51                  {
52                      lowestQuote = quote;
53                  }
54              }
55          }
56  
57          logger.info(LocaleMessage.lowestQuote(lowestQuote));
58          return new MuleMessage(lowestQuote, event.getMessage());
59      }
60  }