jta

I have a stateless bean with bean-managed transactions, and a method like this: @Stateless @TransactionManagement(TransactionManagementType.BEAN) public class ... { @Resource private UserTransaction ut; @EJB private OtherStatelessBeanLocal other; public void invokeSomeMethods() ut.begin(); ... // invoke other bean's methods here. other.method(); ... ut.commit(); } } So how does the UserTransaction propagate to the OtherStatelessBeanLocal bean? The UserTransaction object is an object supplied by the container which wraps access to API calls that the container uses internally, specifically javax

I am new to JPA, when I tried to run the following code, it showing error as " cvc-elt.1: Cannot find the declaration of element 'persistence'. " I cant able to fix this error, could u pls help me out to solve this issue. Cheers Rajesh Persistance.xml <?xml version="1.0" encoding="UTF-8"?> <persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> <persistence-unit name="jpa" transaction-type="JTA">

I am new to JTA and it's underlying transaction managers. Can anyone explain the pros/cons of each of these? Feel free to add others I didn't list in title. Also, don't the major applications servers (WebSphere, JBoss, Glassfish) have their own JTA compliant transaction manager? In those environments, would you still use these third party implementations? Pascal Thivent I am new to JTA and it's underlying transaction managers. Can anyone explain the pros/cons of each of these? Feel free to add others I didn't list in title. Standalone transaction managers I'm aware of include Bitronix ,

Spring Boot的启动器Starter详解 Spring Boot应用启动器基本的一共有 44 种，具体如下： 1） spring-boot-starter 这是Spring Boot的核心启动器，包含了自动配置、日志和YAML。 2）spring-boot-starter-actuator 帮助监控和管理应用。 3）spring-boot-starter-amqp 通过spring-rabbit来支持AMQP协议（Advanced Message Queuing Protocol）。 4）spring-boot-starter-aop 支持面向方面的编程即AOP，包括spring-aop和AspectJ。 5）spring-boot-starter-artemis 通过Apache Artemis支持JMS的API（Java Message Service API）。 6） spring-boot-starter-batch 支持Spring Batch，包括HSQLDB数据库。 7）spring-boot-starter-cache 支持Spring的Cache抽象。 8）spring-boot-starter-cloud-connectors 支持Spring Cloud Connectors，简化了在像Cloud Foundry或Heroku这样的云平台上连接服务。