Camel Proxy and Replacing Exchange body - apache-camel

Question

I have created a proxy for service.
There is a processor in between proxy (request is of type TypeA) and real service (request is of type TypeB).
The Exchange body which comes into the process(Exchange exchange) method is of TypeA.
I am able to access the data using following line of code
TypeA typeA = exchange.getIn().getBody(TypeA.class);
Now, I wanted to change this information to TypeB.
I am adding the body using following line.
exchange.getIn().setBody(typeA);
I got the java.lang.IllegalArgumentException: argument type mismatch
Now, I wanted to call the real service using the Exchange which come out of the Processor.
I tried and got in Processor the following exception
java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.cxf.databinding.AbstractWrapperHelper.createWrapperObject(AbstractWrapperHelpe
The real web service is not getting invoked.
How to fix this.
I am using POJO mode in proxy.

Answer 1

This works without any problems:
private static class ResetBodyRouteBuilder extends RouteBuilder {
#Override
public void configure() {
from("direct:start")
.process(new Processor() {
#Override
public void process(final Exchange exchange) throws Exception {
final ClassA a = exchange.getIn().getBody(ClassA.class);
LOG.info("body = " + a);
exchange.getIn().setBody(new ClassB()); // reset the body
}
})
.log("body = ${body}");
}
}
public class ClassA {
#Override
public String toString() {
return "I'm A";
}
};
public class ClassB {
#Override
public String toString() {
return "I'm B";
}
};
This prints:
[ main] ResetBody INFO body = I'm A
[ main] route1 INFO body = I'm B