How do you specify data source in persistence xml?

How do you specify data source in persistence xml?


  1. In the Project Explorer , select the persistence.
  2. In the context menu, choose Open .
  3. To view the source code of the persistence.
  4. Specify the data source for the persistence unit.
  5. If you are using versioning, configure the versioning properties.

Which of the following properties are configured in persistence xml in JPA?

The properties element allows you to define JPA or JPA provider-specific properties to configure: the Hibernate Dialect. the JTA transaction platform (e.g., GlassFish, JBoss, Bitronix, Atomikos) whether the database schema should be auto-generated.

How do I edit persistence xml?

In the Package Explorer view, right-click the persistence. xml file of the JPA project that you want to edit and select Open with > Persistence XML Editor. In the Design tab of the Persistence XML Editor, make any of the following changes to the persistence.

What are the elements in persistence xml?

The persistence-unit element consists of the following attributes.

  • Attribute : name. This attribute is required.
  • Attribute : transaction-type. This attribute can have the following values.
  • ,

How do you configure EntityManager factory and transaction manager?

We can configure the entity manager factory bean by following these steps:

  1. Create a new LocalContainerEntityManagerFactoryBean object.
  2. Configure the used datasource.
  3. Configure the Hibernate specific implementation of the JpaVendorAdapter interface.
  4. Configure the packages that are scanned for entity classes.

How do I get EntityManager from DataSource?

10 Answers

  1. cast the EntityManager to EntityManagerImpl (the Hibernate implementation)
  2. call getFactory()
  3. cast the EntityManagerFactory to HibernateEntityManagerFactory.
  4. call getSessionFactory() and cast it to SessionFactoryImpl.
  5. call getConnectionProvider() and cast it to the correct implementation.

Which is the correct way to configure JPA repository?

Creating a JPA Repository

  1. Step 1: Create an interface with the name ExchangeValueRepository and extends the JpaRepository class.
  2. Step 2: Open CurrencyExchageController.
  3. Step 3: Create a query method in the ExcahngeValueRepository.
  5. Step 4: In the CurrencyExchangeController.

What is JTA persistence xml?

The jta-data-source (for JTA-aware data sources) and non-jta-data-source (for non-JTA-aware data sources) elements specify the global JNDI name of the data source to be used by the container. The JAR file or directory whose META-INF directory contains persistence. xml is called the root of the persistence unit.

What is the default DataSource in Spring boot?

The primary datasource is autowired by default, and other datasources need to be autowired along with @Qualifier annotation.

What do you have to configure to use JPA with Spring?

If we want to use JPA with MySQL database, we need the mysql-connector-java dependency. We’ll also need to define the DataSource configuration. We can do this in a @Configuration class or by using standard Spring Boot properties. Spring Boot will automatically configure a data source based on these properties.

How do you configure EntityManager Factory and transaction manager?

What is JTA DataSource?

How do you configure a DataSource in spring boot?

To configure your own DataSource , define a @Bean of that type in your configuration. Spring Boot reuses your DataSource anywhere one is required, including database initialization. If you need to externalize some settings, you can bind your DataSource to the environment (see “Section 25.8.

How do I set different DataSource in spring boot?

Multiple Data Sources with Spring Boot

  1. Maven Setup. To set up our Spring Boot project, we need to add spring-boot-starter-data-jpa dependency to the pom.
  2. DataSource Configurations.
  3. JPA Entities.
  4. Package Structure.
  5. JPA Repositories.
  6. Spring Configuration Classes.
  7. Testing.

What is the default DataSource in spring boot?