JSF Tutorials: Using SEAM 3 Remoting

In this tutorial I am going to give an overview of Seam 3 Remoting module and give a simple example of how to use it.

Dependency:
Seam Conversation module

The basic idea behind Seam remoting module is to give a developer a tool to work with his Beans without using a JSF actionListeners or something else. Everything is made in background by AJAX. All you need is to execute a JavaScript Function like the following one:

Seam.createBean('myBean').myMethod(arguments,callbackFunction);

Basically you are creating an "instance" of your object on the client side and executing its methods via AJAX.

So lets see an example of how can we use Seam 3 Remoting:

1. Configuration

Put Seam libraries into your project we will definitely need seam-remoting.jar and seam-conversation.jar.

2. Server side:

import javax.enterprise.context.RequestScoped;
import javax.inject.Named;
import org.jboss.seam.remoting.annotations.WebRemote;

@Named

@RequestScoped

public class TestBean {

    @WebMethod // Enables this method for use in client side
    public String sayHello(String name)  {
        return "Hello, " + name;
    }
}

Nothing else is needed on server side.



2. Client side:

You have to add needed .JS libraries into your view:


<script type="text/javascript" src="seam/resource/remoting/resource/remote.js?compress=false"></script> // core remoting library


<script type="text/javascript" src="seam/resource/remoting/interface.js?testBean"></script>

// your Bean instance

Also you can also write interface.js?yourFirstBean&yourSecondBean




Next you can make use of Seam Remoting:




3. Usage:

function sayHello() {

  var name = prompt("Please enter your name:");

  Seam.createBean('myBean').myMethod(name,callbackFunction);

}

function callbackFunction(result) {

  alert(result);

}















Best regards,


NETLink community member