package ejb.demo4;

/**
* DemoBean -- This is implemented by the EnterPrise`Bean. 
* This class must extend`javax.ejb.SessionBean and implement
* the methods in this interface as well as providing
* the implementation of the business methods.
*
*/

import ejb.demo2.Demo2;
import ejb.demo2.Demo2Home;
import javax.ejb.*;
import javax.naming.*;
import java.rmi.*;
import javax.rmi.PortableRemoteObject;
import java.util.*;


public class Demo4Bean implements javax.ejb.SessionBean {

	//Instance member variables.
	//

	// Session context, can be used to obtain handles etc
	//

	javax.ejb.SessionContext ejbSessionContext = null;

	//Getter/setter methods
	//

	// TBD:  Add implementations for any additional remote method interfaces
	//

	// The default ejbCreate method.
	//

	public void ejbCreate( )
		throws javax.ejb.CreateException,java.rmi.RemoteException
	{
	}

	// TBD:  If any other ejbCreate's are added manually to the home interface, define them.
	//

	// Other methods required in a session bean
	//

	public void setSessionContext( javax.ejb.SessionContext ejbSessionContext )
		throws RemoteException
	{
		this.ejbSessionContext = ejbSessionContext;
	}

	public void unsetSessionContext()
		throws RemoteException
	{
		this.ejbSessionContext = null;
	}

	public void ejbRemove()
		throws java.rmi.RemoteException, javax.ejb.EJBException
	{
	// TBD:  Do any processing here when instance is being removed
	}

	public void ejbActivate()
		throws java.rmi.RemoteException
	{
	// TBD:  Restore any saved resources
	}

	public void ejbPassivate()
		throws java.rmi.RemoteException
	{
	// TBD:  Save any resources here before bean is passivated
	}

    /**
     * **** HERE IS THE BUSINESS LOGIC *****
     * Do the demoSelect() but don't even go to
     * the database in this eg but instead just
     * return a String.
     * The really BIG thing to notice here is that
     * this is the only code we have invented at all
     * the rest of the code has been declarations
     * or simply implementing methods which are
     * part of the EJB interfaces and in this example
     * are not even used.
     */
  public String demoSelect()
    		throws RemoteException
  	{
    		Context     ctx    = null;

    		Demo2Home demo2homeObj = null;
    		Demo2 demo2 = null;

    	
		Properties env = new Properties();
		env.put( "java.naming.factory.initial", 				"desisoft.ejb.client.JRMPFactory" );
		env.put( "desisoft.ejb.nameServer1", "localhost:2050" );

    		try {
            	ctx = new InitialContext(env);
        	}
    		catch (Exception e) {
            	System.out.println("can't get initial context.");
            	return("no initial context");
        	}

		try {
			Object ref = ctx.lookup("ejb.demo2.Demo2" );
			Demo2Home home = (Demo2Home) 		PortableRemoteObject.narrow(ref, Demo2Home.class );

		}
        	catch (Exception e) {
            	System.out.println("error look up Demo2Home.");
            	return ("can't look up Demo2");
        	}

    		return("hello");
  }
}