Dear sir,
I'm currently a student working for a large it company. My task is to create back end and a to experiment with an RESTFul web service.
Also to develop with ejb 3.0 and perhaps the 3.1 but that's for later.
I read a blog from Paul Sandoz,
http://blogs.sun.com/sandoz/entry/ejb_injection
I currently am running a RESTful web service, everything works fine but I have no idea how to inject a bean .
Do I inject it in the entity classes, in the converter in the service?
Some more info on how to instantiate the class and some info about the required parameters.
I have already worked with EJBeans so I recognized the lookup syntax.
I am also working with some beans atm.
The context. lookup has the following value ctx.lookup("Bean30#ejb.Bean30Remote");
It's a stateless session bean.
What I'm actually asking for is if you could provide a simple example with an entity, the corresponding service and converter and a simple EJB that is injected in the RESTFul web service.
The class from the blog:
package entities;
import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.spi.inject.InjectableProvider;
import java.lang.reflect.Type;
import javax.ejb.EJB;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.ws.rs.ext.Provider;
@Provider
public class EJBProvider implements InjectableProvider<EJB, Type> {
public ComponentScope getScope() {
return ComponentScope.Singleton;
}
public Injectable getInjectable(ComponentContext cc, EJB ejb, Type t) {
if (!(t instanceof Class)) {
return null;
}
try {
Class c = (Class) t;
Context ic = new InitialContext();
final Object o = ic.lookup(c.getName());
return new Injectable<Object>() {
public Object getValue() {
return o;
}
};
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
Greetz!