Cayenne and threading

[Hugi Thordarson]

Hi all.

Coming from EOF I’ve been mentally trained to believe anything threaded will 
bite you in the ass in a bad way. Using Cayenne, I’m now writing threaded code 
and loving it, but I just wanted to double check with the community; Is it 
really OK for me to do stuff like I’m doing in the following code? It’s a 
somewhat extreme example since I'd never actually commit for each iteration, 
just looking for some good practices, advice or an “ARE YOU CRAZY?” comment :).

public void main( String[] argv ) {
        ObjectContext oc = // get my ObjectContext

        ExecutorService executorService = Executors.newFixedThreadPool( 
Runtime.getRuntime().availableProcessors() );

        List<Receipt> receipts = oc.select( new SelectQuery<>( Receipt.class ) 
);

        for( Receipt receipt : receipts ) {
                executorService.execute( () -> {
                        receipt.setCreationDate( new Date() );
                        oc.commitChanges();
                } );
        }

        executorService.shutdown();
}

Cheers,
- hugi

// Hugi Thordarson
// http://www.loftfar.is/ <http://www.loftfar.is/>
// s. 895-6688