Hi Aki

Yeah it should add those values as a List when if you add a 2nd value
to the same key.
We do the same in http based components

See the appendHeaders method on
https://git-wip-us.apache.org/repos/asf?p=camel.git;a=blob;f=components/camel-http/src/main/java/org/apache/camel/component/http/helper/HttpHelper.java;h=e98f2bb75087cca8e4a02efcb61888c2804bfaa5;hb=HEAD

We could consider having such a method in camel-core in a
MessageHelper util class or something.

On Wed, May 8, 2013 at 12:45 AM, Aki Yoshida <[email protected]> wrote:
> We have a header entry that has multiple entries that are in the response
> HTTP message. These multiple entries are available in CXF, as each header
> value is represented as a list. However, when this message is propagated
> back to camel, only the first entry of this list is read into the camel
> message's headers.
>
> Looking at the current camel-cxf code in trunk as shown below, I don't see
> an available option to propagate multiple entries back into the camel's
> message header.
>
>         // Copy the CXF protocol headers to the camel headers
>         Map<String, List<String>> cxfHeaders =
>             CastUtils.cast((Map<?,
> ?>)message.get(Message.PROTOCOL_HEADERS));
>         if (cxfHeaders != null) {
>             for (Map.Entry<String, List<String>> entry :
> cxfHeaders.entrySet()) {
>                 if (!strategy.applyFilterToExternalHeaders(entry.getKey(),
> entry.getValue(), exchange)) {
>                     headers.put(entry.getKey(), entry.getValue().get(0));
>                 }
>             }
>         }
>
> Is this assumption correct and if so, has there been some work on how to
> get the multiple entries propagate back to camel? I can think of several
> strategy/options to not to break the existing applications and I was
> wondering if we can add such an option.
>
> I appreciate for your advice.
>
> regards, aki.



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