Message filter using DSL filter(xpath()) doesn't compile

[louis.naber]

I get "method xpath is undefined " when I attempt to use the message filter as shown in the documentation.

from("jbi:endpoint:http://progress.com/demos/test/messageFilter/endpoint").

  filter(xpath("count(/test:world) = 1")).

  to("jbi:service:http://progress.com/demos/test/trace3");

Is there a special import to use xpath ?

[njiang]

The route could be

from("jbi:endpoint:http://progress.com/demos/test/messageFilter/endpoint").
filter().expression().xpath("count(/test:world) = 1").
to("jbi:service:http://progress.com/demos/test/trace3");

[davsclaus]

You dont nee the expression(() so you can do filter().xpath("xxx")

Notice xpath is now a method call.

In your example xpath was a parameter (eg inside ( )). To do that you need to static import the xpath method on the org.apache.camel.builder.xml.PathBuilder