[EMAIL PROTECTED] writes:
>Hi:
>
>Let say that you have a "customer" objects with a lots fields/attributes
>(name, address, phone, ....) that you have implemented as entity bean. In
>order to display all this attributes on the client GUI, you can do two
>things:
>
> 1. Call the get methods (getName, getAddress,...) one after
>another. I
>think each of these calls are a remote call. Therefore, to just show a
>"customer", one must perform a lots of remote calls that are very
>expensive
>(compared to local calls).
> 2. Have "customer" bean to return the all the attributes at once
>as an
>object to the client. That is, "customer" bean has a get() method that
>returns a object containing all the attributes (using C/C++ lingo, a
>structure). This way, the client is making one remote call, and a lots of
>local calls. If the object (structure) returned by the get() method of
>"customer" is implementing serializable interface, does the client get a
>copy of the object or just a reference to it? Where is the returned object
>resides, client or the EJB container?
We have implemented something very similar to 2: Every entity Bean has a
getValue() setValue() methods that return a "Value" type object. Such
object, a copy of the accesible attributes of the bean, becomes a client
cache for the bean. You thus avoid remote calls for every get/set method.
Only issue: Dirty reads. You must either live with them or start a
transaction when you load the bean.
>
>
>Is there any better way to avoid a lots of remote calls?
>
>Thanks,
>Ramin Javanbakht
>
>
>
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