file inbound, detect multiple files

[mfreitag]

Hi,

i need a little bit input:

I want to process multiple files from a directory at the same time. I don't know may be the aggregator pattern is right.

So the use-case:
In the inbound directory: FN.pdf, FN.txt, FN.ok. After the "FN.ok" file is detected, the inbound adapter should trigger and forward FN.pdf and FN.txt.

How is the best practise solution? Create a customScanner?

Can sombody help or hava an example?

Thanks a lot!

[kgrodzicki]

Hi,

You can use aggregator pattern. Take a look on the sample cafe application. There is a example how to overwrite correlation strategy.

@MessageEndpoint
public class Waiter {

    @Aggregator(inputChannel = "preparedDrinks", outputChannel = "deliveries")
    public Delivery prepareDelivery(List<Drink> drinks) {
        return new Delivery(drinks);
    }
    
    @CorrelationStrategy
    public int correlateByOrderNumber(Drink drink) {
    	return drink.getOrderNumber();
    }
    
}

I forgot to mention that you have to be aware of the 'ReleaseStrategy' for aggregator. Check the documentation for more details - http://bit.ly/k7U7bc

I hope it helps,
Krzysiek