ejb

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What exactly is Java EE?

I have been doing Java SE for some years now and moving on to Java EE. However, I have some trouble understanding some aspects of Java EE.[详细]

2023-04-02 11:14 分类：问答
Java EJB @Asynchronous loop - How to know when all the calls are complete before moving on?

I have this code in an ejb for (PayrollEntry pe : payroll.getEntries()) { recalculateP开发者_运维技巧ayrollEntry(pe);[详细]

2023-04-02 01:06 分类：问答
Stateless EJB with more injected EJBs instances

I know Stateless EJBs are stored in a pool and instantiated as needed, my question is, what happens when there are more EJB dependencies, for example with something like this:[详细]

2023-04-02 00:20 分类：问答
Can env-entry values from ejb-jar.xml be modified during runtime in Glassfish?

My EJB project, packaged in an EAR, defines some env-entry configuration values in its ejb-jar.xml. I can inject these into my session bean fine.[详细]

2023-04-01 23:20 分类：问答
ClassCastException when casting looked-up EJB view in AS7

I have am deploying 2 EARs onto JBoss AS 7.1.0.Alpha1-SNAPSHOT (post 7.0.1.Final version). Both deploy fine.[详细]

2023-04-01 22:32 分类：问答
EJB - Can you use a bean within a bean

For example, can I do the following @Stateless @LocalBean public class MyBean extends AbstractFacade<MyBeanEntity>[详细]

2023-04-01 20:34 分类：问答
Why do we have to manually flush() the EntityManager in a extended PersistenceContext?

In our J2EE application, we use a EJB-3 stateful bean to allow the front code to create, modify and save persistent entities (managed through JPA-2).[详细]

2023-04-01 16:26 分类：问答
EJB dependency injection into Servelt - WAS7

I am trying to inject an EJB with the @EJB annotation : when I inject an EJB into another EJB it works fine.[详细]

2023-04-01 16:17 分类：问答
Problem deploying scheduled EJB to Glassfish server

I have a weird (?) problem with an EJB I want to deploy to my Glassfish 3.1 application server. I have this bean, which should be executed continuously in Glassfish using the @Schedule annotation. T[详细]

2023-04-01 14:09 分类：问答
JPA using alternative "persistence.xml"

I know that with the instruction: Persistence.createEntityManagerFactory(\"persistence-unit-name\"); The JPA persistence mechanism reads the \"persistence.xml\" file, looks for the persistence unit[详细]

2023-04-01 13:23 分类：问答