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https://issues.apache.org/jira/browse/CAMEL-4508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13130464#comment-13130464
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Claus Ibsen commented on CAMEL-4508:
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Thanks for the patch. I am applying it now.
The new option should be documented here
http://camel.apache.org/polling-consumer.html
At the scheduled poll consumer. But may also add/refer to it from some of these
components as it can be commonly used, such as the file/ftp etc.
> Add option for scheduled polling consumer to emit an null message if there
> was no messages to poll
> --------------------------------------------------------------------------------------------------
>
> Key: CAMEL-4508
> URL: https://issues.apache.org/jira/browse/CAMEL-4508
> Project: Camel
> Issue Type: Improvement
> Components: camel-core
> Reporter: Claus Ibsen
> Assignee: Claus Ibsen
> Fix For: 2.9.0
>
> Attachments: CAMEL-4508.patch
>
>
> For example when people poll files, then they may want to react if there is
> no files to pickup. Currently you would have to use a poll strategy, but we
> should add an option you can configure on the endpoint, to have it emit an
> null message instead.
> sendEmptyMessageWhenIdle - false - If this option is true, and there was no
> messages to poll, then we simulate processing a single message, by sending an
> empty message.
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