Re: Agraggator to merge files

[davsclaus <ci...@yahoo.dk>]

Yes that is possible.

Check out this wiki page
http://camel.apache.org/aggregator2

You may want to use the completionFromBatchConsumer=true to let the
aggregator pickup the X number of files from the directory. Then you have
that as a List.

Alternative you can use the aggregator to "merge" the files together to a
single message.

How to use the aggregator is extensively covered in the Camel in Action book
chapter 8. In fact I suggest you peak at some of the sample codes from the
book.

http://code.google.com/p/camelinaction/source/browse/#svn%2Ftrunk%2Fchapter8%2Faggregator%253Fstate%253Dclosed


-----Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/--
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Re: Agraggator to merge files

[davsclaus <ci...@yahoo.dk>]

The code can be something like this. Where we + the bodies together and use a
\n between them. But the code can be anything you like. Just set the
"result" on the IN body on the oldExchange and return it.

  public Exchange aggregate(Exchange oldExchange, Exchange newExchange) { 
      if (newExchange == null) {
   return oldExchange;
     }

     String oldTxt = oldExchange.getIn().getBody(String.class);
     String newTxt = newExchange.getIn().getBody(String.class);
     String body = oldTxt + "\n" + newTxt;
     
     // replace and return oldExchange
     oldExchange.getIn().setBody(body);
     return oldExchange;
} 

-----
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/
--
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