Tutorial about Writing a JNDI Service Provider

Question

Is there any tutorial about Writing a JNDI Service Provider and accessing the objects and methods from another project to it step by step. There are some information on Building a service provider but it is not easy to implement.

Thanks.

Answer 1

Now I solved my problem with annotations and global usage of InitialContext class. Stateless annotation and ejb-jar xml files and accessing the global jndi addresses the keys for usage.

Access Code:

this.jndiAddress="ejb/service/IMyInterface";
Context context = new InitialContext();
IMyInterface object = (IMyInterface) context.lookup(this.jndiAddress);
object.doSomething();

Service Code;

IMyInterface.java:

public interface IMyInterface {

    void doSomething();

}

MyClass.java:

@Remote(IMyInterface.class)
@Stateless(mappedName="ejb/service/IMyInterface")
public class MyClass implements IMyInterface {

    @EJB
    private IMyUserDao userDao;

    @Override
    public void doSomething() {
        User user = userDao.get(1);
        System.out.println(user.getName());
    }

}

ejb-jar.xml;

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:ejb="http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd" version="3.0">
    <display-name>Service</display-name>
    <enterprise-beans>
        <session>
            <ejb-name>MyClass</ejb-name>
            <ejb-class>package.MyClass</ejb-class>
        </session>
        <session>
            <ejb-name>UserDao</ejb-name>
            <ejb-class>package.dao.UserDao</ejb-class>
        </session>
    </enterprise-beans>
</ejb-jar>