getObjectbyId is faster
On Aug 19, 6:03 am, mar_novice <[email protected]> wrote:
> I need you opinions and suggestions on this 2 kinds of implementation
> in finding if an entity is
> not in the datastore and doing a task if it is not in the datastore.
>
> 1. use getObjectbyID
>
> try {
> Object object = pm.getObjectbyId(Object.class, "some-key");
> // since it is already in the datastore, do nothing
> } catch (JDOObjectNotFoundException e){
> // since it is not in the datastore, do task
> task();
> }
>
> 2. use query
>
> String query = "select from " + Object.class.getName() +
> " where id == idParam parameters String
> idParam";
>
> List<Object> object = (List<Object>) pm.newQuery(query).execute
> ("some-key");
>
> if (object.isEmpty()){
> //since it is not in the datastore, do task
> task();
> }
>
> I heard that using getObjectbyId is faster but it is inside the try-
> catch block... My goal is to do task if the object is not in the
> datastore. And when the object is not in the datastore, it will throw
> an exception and we know that catching an exception takes more time
> and processing compared to an if -else block in the sample 2, but we
> used a pm.newQuery(), which is based from my understanding, slower
> compared to pm.getObjectbyId().
>
> So people, what do you think???
>
> -mar_novice
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