Spring Operator

**[Oyvind Kvien](https://jira.spring.io/secure/ViewProfile.jspa?name=pompiuses)** commented Just a little update about how we decided to solve the null payload issue in my current project. The initial problem was that the executing thread would...

**[Mark Fisher](https://jira.spring.io/secure/ViewProfile.jspa?name=mark.fisher)** commented Good news! We have already added the "requires-reply" attribute to the \ element in 2.0 (see #5381). I've also created an issue to address that for 1.0.5:...

**[Oyvind Kvien](https://jira.spring.io/secure/ViewProfile.jspa?name=pompiuses)** commented Well, yes the requires-reply attribute does solve the initial problem. But just throwing a MessageHandlingException provides little flexibility to give any kind of meaning to why the...

**[Mark Fisher](https://jira.spring.io/secure/ViewProfile.jspa?name=mark.fisher)** commented I have thought about this as well. The first thing I'd like to ask is why you can't create a simple wrapper object that invokes the real...

**[Oyvind Kvien](https://jira.spring.io/secure/ViewProfile.jspa?name=pompiuses)** commented We did use wrapper objects to begin with, but decided to go for a more generic solution with an extended namespace as mentioned above. The problem isn't...

**[Christian Nedregård](https://jira.spring.io/secure/ViewProfile.jspa?name=hr_flick)** commented Hi. I work with Øyvind. We are seeing similar behaviour also when using splitter/aggregator on a direct channel. If the original payload is an empty list the...

**[Mark Fisher](https://jira.spring.io/secure/ViewProfile.jspa?name=mark.fisher)** commented Christian, What is the entry point to your message flow?, and are you using 2.0 now? The best way to avoid this through a single configuration is...

**[Christian Nedregård](https://jira.spring.io/secure/ViewProfile.jspa?name=hr_flick)** commented Thanks for your quick reply Mark :) We are upgrading to 2.0 early next year. All our entry points are through GatewayProxyFactoryBean via a specialized gateway namespace...

**[Mark Fisher](https://jira.spring.io/secure/ViewProfile.jspa?name=mark.fisher)** commented The concept of "hanging" is really only relevant if there is some process waiting for a reply. The way that Spring Integration is designed, components can return...

**[Christian Nedregård](https://jira.spring.io/secure/ViewProfile.jspa?name=hr_flick)** commented Yes. Thanks for explaining this so thoroughly. We'll have a look at our flows, and set realistic default timeouts on their entry points where needed. Cheers Chr