Unmarshal type

[Bzelga]

Hi.
I'm trying to do a simple integration where there will be an xml to POJO conversion.
I can't figure out how to fill in the unmarshal type correctly.
I found an example that I tried to reproduce: https://stackoverflow.com/questions/76234573/unmarshalling-xml-json-to-class-in-apache-karavan
Created the "User" class and the following route:

- route:
    id: route-6cc2
    nodePrefixId: route-9ba
    from:
      id: from-15db
      uri: kamelet:timer-source
      parameters:
        message: .
        period: 60000
      steps:
        - setBody:
            id: setBody-d69b
            expression:
              simple:
                id: simple-645a
                expression: |-
                  <user>
                      <name>John</name>
                      <surname>Smith</surname>
                  </user>
        - unmarshal:
            id: unmarshal-e908
            jacksonXml:
              id: jacksonXml-ce0f
              unmarshalType: User
        - log:
            id: log-98d7
            message: ${body}

An error appears at startup:

org.apache.camel.FailedToCreateRouteException: Failed to create route route-6cc2 at: >>> Unmarshal[org.apache.camel.model.dataformat.JacksonXMLDataFormat@59c43561] <<< in route: Route(route-6cc2)[From[kamelet:timer-source?message=.&period... because of Error binding property (unmarshalType=User) with name: unmarshalType on bean: org.apache.camel.component.jacksonxml.JacksonXMLDataFormat@634f58d2 with value: User
...
Caused by: org.apache.camel.PropertyBindingException: Error binding property (unmarshalType=User) with name: unmarshalType on bean: org.apache.camel.component.jacksonxml.JacksonXMLDataFormat@634f58d2 with value: User
...
Caused by: org.apache.camel.RuntimeCamelException: org.apache.camel.NoTypeConversionAvailableException: No type converter available to convert from type: java.lang.String to the required type: java.lang.Class
...
Caused by: org.apache.camel.NoTypeConversionAvailableException: No type converter available to convert from type: java.lang.String to the required type: java.lang.Class

If I understood correctly, then the name of the class is perceived as a string. I tried writing: User, User.class and User.java .
What am I doing wrong?

[davsclaus]

The class name is FQN, so you should possible add the package name for the class, om.dhls.camel.User if you use that. Also make sure you have the user .java source together with the route yaml file when you run

[Bzelga]

Wow, thanks, it works, I didn't think to do that!
And if you don't use "package"?
After reading the answer, paragraph 4 says that the caravan does not use "package", so you can not do this? Then how do I write the class name to the unmarshal parameter?

[davsclaus]

Using java package for .java sources was not supported in the past. But newer version of Camel can now do that.

[davsclaus]

Btw where in the doc did you see that 4 paragraph?

[Bzelga]

There may be an inaccuracy in my message, because I use a translator :)
I was referring to the 4th paragraph of the message in the reply that I wrote at the very beginning.