CODEWITHSUNDEEP
apache-camel
David
David

Reputation: 579

Is there a way to set message headers from a bean?

I have a simple camel route I need to modify. The route looks like this:

from(source.uri)
    .unmarshal()
    .bean(TransformMessageBean.class, "SomeMethod")
    .to(destination.uri)

I want to add another bean method call after the unmarshaling that set's a header value without disrupting the current data flow . Does anyone know of a way to do this? I read that in apache's documentation that a bean's return value is set in the outbound message body. Is there a way to change that to a header?

Thanks in advance!

Upvotes: 9

Views: 13310

Answers (3)

Justinas Jakavonis
Justinas Jakavonis

Reputation: 8838

Another way in XML:

<setHeader name="headerName"> 
    <simple>${bean:yourBean.getMethod}</simple>           
</setHeader>

Upvotes: 4

Kimutai
Kimutai

Reputation: 1052

In Spring XML DSL, it would be something like

 <setHeader headerName="headerName">
      <method bean="mybean" method="mymethod" />                
</setHeader>

Upvotes: 7

Ray
Ray

Reputation: 4869

Certainly! One of the options available is 

.setHeader("headerName").method(beanInstance, "methodToGetHeaderValue")

Using this approach, the method (say, methodToGetHeaderValue) on the provided bean instance will return a value, and that will become the value of the header.

There are a number of options available. You can call it with a bean instance, a bean class (like in your example), or even a bean name, all with or without a method name.

Upvotes: 14

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