[CAMEL-4797] DataFormat - unmarshal should allow to return Message or Exchange to make it more flexible

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10.0
• Component/s: camel-core
• Estimated Complexity: Moderate
• Assignee: Babak Vahdat
• Reporter: Claus Ibsen
• Created: 19/Dec/11 13:18
• Updated: 04/Mar/12 12:40
• Resolved: 04/Mar/12 12:40

Description

The API of the unmarshal on DataFormat is

    Object unmarshal(Exchange exchange, InputStream stream) throws Exception;

The Object returned is by default the message body. But we should allow end user to return also a

• org.apache.camel.Message
• org.apache.camel.Exchange

If its a Message then use the message returned.
If its a Exchange then copy the results from the exchange to the current exchange (normally it would be the same instance, so its a noop operation)

We supports this for the splitter, where people can return a List<Message> in the split expression etc.