Hibernate Transaction, JTA with Hibernate, Session, CurrentSession, Transaction, JTA Example Code, Example, Tutorial, Article

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Tags/Keywords : Hibernate Transaction, JTA with Hibernate, Session, CurrentSession, Transaction, JTA Example Code, Example, Tutorial, Article
Author : guddu
Date (Year/Month/Date): 2010-06-20 Example code working with Container managed transaction and Hibernate Session


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Using JTA transaction with Hibernate Session for carrying out multiple database operations as an Unit of Work. This means either all the database operations do succeed, or else all changes gets roll backed. I shall be using the same old example, as to transfer some amount from one account to another account, whereby some amount is being subtracted from one account and added onto balance of another account. In this case it is obvious that either both debit and credit operations should succeed, or else all the changes made should be undone. I shall be starting with a similar example being shown on this site some time back, one can refer it HERE. In this example, there is a TestClient, a testing harness code. This test program is calling a sesson facade or session bean, and this session bean is using a hypothetical service named as AccountService. This AccountService is using AccountDAO in order to use Hibernate specific DAO/Hibernate Session instance for doing all sorts of database operation, such as read, save, update, delete etc. One interesting fact about this example is that, I am using Application server container managed transaction for these multiple operations, those are being tagged as a single unit of work. Sounds interesting !! Let's review code for this example. Most of the source files are used as it is, apart from some of the files such as Account class, its related HBM mapping XML file, related ejb-jar.xml file, and corresponding database table column being added, in order to add another attribute for storing amount balance. There are few more service methods are added, such as transferAmount fetch account object etc. So the database (I have used MySQL version 5.0), table creation script looks like as follows:

CREATE TABLE account_info (
  account_number varchar(100) NOT NULL,
  holder_name varchar(100) DEFAULT NULL,
  account_type varchar(100) DEFAULT NULL,
  account_balance decimal(20,2) DEFAULT NULL,
  account_active_status int(1) DEFAULT NULL,
  PRIMARY KEY (account_number)
)

On execution of this example, following is snippet/fraction of console output that is showing that transfer amount operations are using the same JTA transaction, as shown in the following output:

Starting with Transaction :org.hibernate.transaction.JTATransaction@9f33d
Hibernate: select account0_.account_number as account1_59_0_, account0_.hol
Hibernate: select account0_.account_number as account1_59_0_, account0_.hol
Commiting with Transaction :org.hibernate.transaction.JTATransaction@9f33d

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Thanks for this helpful article, Can you please help me with configuration setting for Transaction, TransactionFactory and TransactionManagerLookUp class files for JONAS application server? Hope to hear from you soon..

Hi Suresh, Please go through class files under package org.hibernate.transaction for all the available transaction manager lookup classes for various application servers including JOnAS application server. I looked at javadoc api for Hibernate version 3.2 and found one class files as org.hibernate.transaction.JOnASTransactionManagerLookup I think you should be able to try with this and if it works please update us by writing a small note on this page. Thanks anyways.

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