Solved

inverse attribute in hibernate

Posted on 2011-03-10
7
690 Views
Last Modified: 2012-06-21
Hi,

I would like to know when we use inverse attribute. I saw setting inverse=true within set property attribute while doing many-one, one-many association hibernate examples. any  ideas, suggestions, sample code, resources, links highly appreciated.thanks in advance
0
Comment
Question by:gudii9
  • 2
  • 2
  • 2
  • +1
7 Comments
 
LVL 7

Accepted Solution

by:
techsathish earned 167 total points
ID: 35104894
This link will make you understand about the inverse with all you asked .. check it out and get a knowledege..

http://www.mkyong.com/hibernate/inverse-true-example-and-explanation/
0
 
LVL 20

Assisted Solution

by:Sathish David Kumar N
Sathish David  Kumar N earned 167 total points
ID: 35105034
Invesre key word is used for relation ship mapping like one to many and many to many !

>>>>>>>>>I would like to know when we use inverse attributeto avoid un nessery updates  from the relation ship mapping  

when we wont use ?

child update themself that time only we didnt use inverse=true
0
 
LVL 20

Expert Comment

by:Sathish David Kumar N
ID: 35105115
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 9

Assisted Solution

by:ioanton
ioanton earned 166 total points
ID: 35106176
Quotation from Hibernate docs:

"The rules are straightforward: all bi-directional associations need one side as inverse. In a one-to-many association it has to be the many-side, and in many-to-many association you can select either side."
0
 
LVL 7

Author Comment

by:gudii9
ID: 35218461
>>>In a one-to-many association it has to be the many-side, and in many-to-many association you can select either side

I have not clearly understood this. Can you please elaborate this.
0
 
LVL 9

Expert Comment

by:ioanton
ID: 35225598
You can find here a more detailed description of the problem:

http://swik.net/itefforts/itefforts+blog/Understanding+%22inverse%22+mapping+attribute/bo772
0
 
LVL 7

Author Comment

by:gudii9
ID: 35369062
in above link i read like

>>>

What is “inverse”?

This is the most confusing keyword in Hibernate, at least i took quite a long time to understand what is it. The “inverse” keyword is always declared in one-to-many and many-to-many relationship (many-to-one doesn’t has inverse keyword), It defines which side is responsible to take care of the relationship.

Always put inverse=”true” in your collection variable?

There are many Hibernate articles try to explain the “inverse” with many Hibernate “official” jargon, which is very hard to understand (at least to me). In few articles, they even suggested that just forget about what is “inverse”, and always put the inverse=”true” in the collection variable. This statement is always true – “put inverse=true in collection variable”, but do not blindfold on it, try to understand the reason behind is essential to optimal your Hibernate performance.

“inverse”, can it change to “relationship owner”?


i still not clear on it. please advise
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.

680 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