[CONF] Apache Camel: Header (page edited)

Sat, 20 Sep 2008 00:51:02 -0700

Page Edited : CAMEL : Header

Header has been edited by Claus Ibsen (Sep 20, 2008).

Change summary:

CAMEL-907

(View changes)

Content:

Header _expression_ Language

The Header _expression_ Language allows you to extract values of named headers.

Available as of Camel 1.5

Example usage

The recipientList element of the Spring DSL can utilize a header _expression_ like: 

<route>
  <from uri="direct:a"/>
  <recipientList>
    <header>recipientListHeader</header>
  </recipientList>    
</route>


In this case, the list of recipients are contained in the header 'recipientListHeader'. 



And the same example in Java DSL:




from("direct:a").recipientList(header("recipientListHeader"));




And with a slighly different syntax where you use the builder to the fullest (i.e. avoid using parameters but using stacked operations, notice that header is not a parameter but a stacked method call)




from("direct:a").recipientList().header("recipientListHeader");

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