Spring Operator

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented You can update the source on each poll using a [smart poller](http://docs.spring.io/spring-integration/reference/html/messaging-channels-section.html#__smart_polling) > This method is called before the MessageSource.receive() method. It enables you to examine and...

**[Artem Bilan](https://jira.spring.io/secure/ViewProfile.jspa?name=abilan)** commented You can configure your adapter with some fake dir from the beginning and > but i want to change that directory everytime poller start to poll directory,...

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented Also see ["Smart" Polling](https://docs.spring.io/spring-integration/reference/html/messaging-channels-section.html#__smart_polling).

**[Artem Bilan](https://jira.spring.io/secure/ViewProfile.jspa?name=abilan)** commented Good request! Thank you! One thought on the matter: to follow with Spring MVC experience - `HandlerExceptionResolver`, or Spring WS - `FaultMessageResolver`.

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented [Proof of concept here](https://github.com/garyrussell/spring-integration/commit/f100d4380e2021af01a786e4a0b53197c2e03234). JMS is easy because the Spring infrastructure automatically converts the exception to an `ObjectMessage`. Others (amqp, tcp) will be more tricky

**[Artem Bilan](https://jira.spring.io/secure/ViewProfile.jspa?name=abilan)** commented Gary, would you mind to share more context or thoughts? I just some how feel like this request is fully unrelated to the delayer purpose. 1. We...

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented It has nothing to do with messages with different delays, or messages arriving on different threads; the issue is with a fixed delay; millisecond is not enough...

**[Artem Bilan](https://jira.spring.io/secure/ViewProfile.jspa?name=abilan)** commented I wonder if there would be enough to rely on the injected `ConcurrentTaskScheduler` capabilities. Looks like we can supply `ConcurrentTaskScheduler` with any `ScheduledExecutorService` implementation including Reactor's `ColocatedEventLoopGroup`,...

**[Gary Russell](https://jira.spring.io/secure/ViewProfile.jspa?name=grussell)** commented That won't help after restart; the order will be lost again after message store retrieval; I think we'll need some kind of incrementing integer to apply to...

**[Artem Bilan](https://jira.spring.io/secure/ViewProfile.jspa?name=abilan)** commented Do you mean something similar what we have in the `INT_CHANNEL_MESSAGE` with the: ```sql MESSAGE_SEQUENCE NUMBER(19,0) NOT NULL , ``` but in this case at the `INT_MESSAGE_GROUP`...