Spring Operator

**[Mauro Molinari](https://jira.spring.io/secure/ViewProfile.jspa?name=mauromol)** commented Hi Gary, yes, of course it can be done with a service activator, but it's more work. When you talk about a "one-way integration with no possibility...

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented Yes, it's not allowed there either; see `MethodInvokingMessageHandler`. > but it's more work I don't think adding `output-channel="nullChannel"` to the service activator is particularly burdensome.

**[Mauro Molinari](https://jira.spring.io/secure/ViewProfile.jspa?name=mauromol)** commented You're in any case adding more "noise". I also feel like it's more of a stretching the use of a nullChannel-connected service activator to actually model a...

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented I am not saying I completely disagree; after all you can call a value-returning method from java and discard the result. I am just saying we can't...

**[Mauro Molinari](https://jira.spring.io/secure/ViewProfile.jspa?name=mauromol)** commented Sure, no hurry for me at all. Thank you Gary. :)

**[Artem Bilan](https://jira.spring.io/secure/ViewProfile.jspa?name=abilan)** commented I would to know more background. Let me quote you from StackOverflow: > Now my polling directory have multiple sub-folders and in different conditions i have to...

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented This is similar to #7713; yes, it can be done in a smart poller, but adding expression support would be more convenient. Obviously, it would not be...

**[Varun Maurya](https://jira.spring.io/secure/ViewProfile.jspa?name=varunmaurya)** commented inbound channel adapter is starting point of my application. The way you suggest to have access of FileReadingMessageSource and setting the directory would change after first run.i.e....

**[Artem Bilan](https://jira.spring.io/secure/ViewProfile.jspa?name=abilan)** commented For the `FileReadingMessageSource.setDirectory(File directory)` it doesn't matter if your adapter has been started before or not. You can just inject it as a bean anywhere and change...

**[Varun Maurya](https://jira.spring.io/secure/ViewProfile.jspa?name=varunmaurya)** commented I am sorry if i am not able to understand you correctly or i am not able to explain the problem - Let me try one more...