Solved

JCA - Adapter pattern

Posted on 2006-11-25
7
246 Views
Last Modified: 2008-02-26
Java connector Architecture follows Adapter pattern.

Any explanation on how this occurs with sample code would be helpful

simple explanation in laymans terms plzz!

thanks
J
0
Comment
Question by:jaggernat
  • 4
  • 3
7 Comments
 
LVL 23

Accepted Solution

by:
Ajay-Singh earned 465 total points
ID: 18013587
These are 2 key features adapter provides:
    1. Allows two or more previously incompatible objects to interact.
    2. Allows reusability of existing functionality.


JCA allows you to interact with the database, other resources seamlessly. The JCA interface is defined but the actual source may not follow that. So in order to make it work, we the source defines an adapter that interacts with the source.
0
 
LVL 10

Author Comment

by:jaggernat
ID: 18014490
I get the thoery. simple example code would help.

thanks
0
 
LVL 23

Expert Comment

by:Ajay-Singh
ID: 18014621
0
Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

 
LVL 10

Author Comment

by:jaggernat
ID: 18014651
we have a adaptor class, a client and an adaptee.
the client is trying to call an adaptee which is modified by the adaptor. right?
not exactly sure what the role of client and the adaptee is.

0
 
LVL 23

Expert Comment

by:Ajay-Singh
ID: 18014873
> the client is trying to call an adaptee which is modified by the adaptor. right?
Yes

> not exactly sure what the role of client and the adaptee is.
client has an interface and adapter doesn't follow that interface. In order to interact with the client, adapter follows the client interface and modify the adpatee (calls its methods) when client wants to do something.
0
 
LVL 10

Author Comment

by:jaggernat
ID: 18014926
In Adapter pattern , an adapter wraps a class(target class) in such a way that the client class can call the adaptor to use the target class.
Client --> Adapter/ wrapper class --> Adaptee ( target).
So the client doesnt calls the target object(adaptee) which is an direclty, but invokes the adaptee through the Adapter.


above is my description of adapter pattern. Is it right?
0
 
LVL 23

Expert Comment

by:Ajay-Singh
ID: 18017108
yes
0

Featured Post

Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Java JRE greater than 1.6 5 62
nextBoolean(double p) for Random class 3 40
servlet example issue 6 38
login jsp example 24 48
Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
The viewer will learn how to implement Singleton Design Pattern in Java.

776 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