Solved

ejb pass by value, pass by reference

Posted on 2011-09-10
2
314 Views
Last Modified: 2012-05-12
i was reading

remote ejb calls (ie execution in different jvm) happen through pass by value
local ejb calls (ie execution in same jvm ) happen through pass by reference

why it happens so. What are advantages, disadvantages, uses, how , when, why we make different calls.
I was not clear on this concept. thanks in advnace
0
Comment
Question by:gudii9
2 Comments
 
LVL 47

Assisted Solution

by:for_yan
for_yan earned 200 total points
ID: 36518162
Although this is rather old article (about EJB 2.0)
but the explanation I believe is useful:


http://onjava.com/pub/a/onjava/2004/11/03/localremote.html

0
 
LVL 20

Accepted Solution

by:
a_b earned 300 total points
ID: 36518292
When the ejb and the client are residing in the same jvm it is possible to hand a refernece of the object as both the client and the ejb have access to the same java heap.

However, when the ejb and client are in different jvms the object need to be serilazed and passed to the client and since they donot have access to the same java heap you need to pass by value by serialization.
0

Featured Post

The New “Normal” in Modern Enterprise Operations

DevOps for the modern enterprise offers many benefits — increased agility, productivity, and more, but digital transformation isn’t easy, especially if you’re not addressing the right issues. Register for the webinar to dive into the “new normal” for enterprise modern ops.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
print map entry 34 72
map related example 6 55
hibernate insert example 13 34
Is there a simpler dropbox system? 10 34
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question