JOTM :: Core Framework: The transaction manager in the Java class library
JOTM :: Core Framework: The transaction manager in the Java class library
In Java applications, transaction management is a vital feature.The transaction manager can ensure the four characteristics of the atomic, consistency, isolation and persistence of database operations.And JOTM :: CORE is a Java class library that provides a powerful transaction manager so that developers can easily manage and control transactions.
JOTM :: Core framework is an open source transaction manager that can be seamlessly integrated with various Java applications and persistent layer frameworks.It follows the Java Transaction API (JTA) specifications and provides a set of simple and easy -to -use APIs for developers to easily manage affairs.
1. Introduction to JOTM :: CORE framework: First of all, we need to add the dependencies of the JOTM :: core framework in the project construction file (such as Maven's pom.xml).For example:
<dependency>
<groupId>org.objectweb.jotm</groupId>
<artifactId>jotm-core</artifactId>
<version>3.1.7</version>
</dependency>
2. Configure transaction manager: Next, we need to configure the work manager of the JOTM :: core framework.This operation can be completed by creating a configuration file called "Transaction.properties".The following is the content of a sample configuration file:
properties
org.objectweb.jotm.datasource :
XADataSourceClass = com.mysql.jdbc.jdbc2.optional.MysqlXADataSource
URL = jdbc:mysql://localhost:3306/mydatabase
user = myuser
password = mypassword
transactionTimeout = 300
The above configuration file specifies the use of the MySQL database as the persistent layer and the corresponding connection information and transaction timeouts.
3. Initialize transaction manager: In the code, we need to initialize the work manager of the JOTM :: core framework.It can be achieved by the following code:
import org.objectweb.jotm.*;
public class TransactionManagerInitializer {
public static void main(String[] args) throws Exception {
TransactionManager.init();
// Do other initialization operations ...
}
}
The above code uses the TransactionManager class provided by the JOTM :: CORE framework to initialize the transaction manager.
4. Open and submit transactions: Once the transaction manager initializes it, we can use the following code where the transaction is needed to open a new transaction:
import javax.transaction.*;
public class TransactionalOperation {
public void performTransactionalOperation() throws NotSupportedException, SystemException {
UserTransaction userTransaction = TransactionManager.getUserTransaction();
userTransaction.begin();
// Perform database operations or other operations in transactions ...
userTransaction.commit();
}
}
The above code uses the UserTransaction class provided by the Java Transaction API (JTA). By calling the Begin () method, it is used to open the transaction, perform database operations or other operations in the transaction, and finally use the Commit () method to submit transactions.
By using the JOTM :: CORE framework, we can easily realize transaction management to ensure the atomicity and consistency of database operations.The handling of transaction management to the framework can not only reduce the development workload, but also improve the maintenance and scalability of the application.
