Hi
Have you looked at org.apache.camel.spi.InterceptStrategy?
On Mon, Jul 5, 2010 at 5:00 PM, Mark Proctor <mproc...@codehaus.org> wrote:
>
> As well as using Policy to wrap the child processors, I'd like to be able to
> change/augment the child definitions before they are built. My current use
> case for this is so I can augment the DataFormats, with additional
> configurations. Additionally this Policy also takes care of setting the
> current context ClassLoader, but that already works fine with the existing
> Policy wrap api.
>
> API comptability is a problem, but as a sketch to what I'm trying to
> achieve, here is a change that while a little clunky (due api compatability)
> should achieve the job. This allows the wrap to still call the child
> Process, via the delegate, but to also inspect and change the child
> Definitions prior to building.
>
> public interface DefinitionAwarePolicy extends Policy {
> Processor wrap(RouteContext routeContext,
> ProcessorDefinition<ProcessorDefinition> processorDefinition, Processor
> processor);
> }
>
> PolicyDefinition.
> public Processor createProcessor(RouteContext routeContext) throws
> Exception {
> DelegateProcessor childProcessor = new DelegateProcessor();
>
> Policy policy = resolvePolicy(routeContext);
> ObjectHelper.notNull(policy, "policy", this);
> Processor target;
> if ( policy instanceof Policy ) {
> target = policy.wrap(routeContext, childProcessor);
> } else {
> target = ((DefinitionAwarePolicy)policy).wrap(routeContext,
> this, childProcessor);
> }
>
> childProcessor.setProcessor( this.createChildProcessor(routeContext,
> true) );
>
> // wrap the target so it becomes a service and we can manage its
> lifecycle
> WrapProcessor wrap = new WrapProcessor(target, childProcessor);
> return wrap;
> }
> --
> View this message in context:
> http://camel.465427.n5.nabble.com/Using-Policy-to-alter-Definitions-before-building-tp696567p696567.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
>
--
Claus Ibsen
Apache Camel Committer
Author of Camel in Action: http://www.manning.com/ibsen/
Open Source Integration: http://fusesource.com
Blog: http://davsclaus.blogspot.com/
Twitter: http://twitter.com/davsclaus
