The Unmarshal EIP supports 1 options which are listed below:
Required The data format to be used
DataFormat jaxb = new JaxbDataFormat("com.acme.model"); from("activemq:My.Queue"). unmarshal(jaxb). to("mqseries:Another.Queue");
The above uses a named DataFormat of jaxb which is configured with a number of Java package names. You can if you prefer use a named reference to a data format which can then be defined in your Registry such as via your Spring XML file.
You can also use the DSL itself to define the data format as you use it. For example the following uses Java serialization to unmarshal a binary file then send it as an ObjectMessage to ActiveMQ
from("file://foo/bar"). unmarshal().serialization(). to("activemq:Some.Queue");