Tuesday 21 April 2009

9-Writing JAVA Clients for Calling BEA WebLogic EJBs


IX- The naming solution that works for WebLOGIC

File : CalcARSBean.java
package bean;

/**
* Remote interface for CalculatorBean.
*/
public interface CalcARSBean
extends javax.ejb.EJBObject
{
/**
* The method that returns the multiplied value
*/
public int multiply( int val1,int val2 )
throws java.rmi.RemoteException;

}
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File : CalcARSBeanHome
package bean;

/**
* Home interface for CalculatorBean.
*/
public interface CalcARSBeanHome
extends javax.ejb.EJBHome
{
public static final String COMP_NAME="java:comp/env/ejb/CalculatorBean";
public static final String JNDI_NAME="CalculatorSessionBean";

public bean.CalcARSBean create()
throws javax.ejb.CreateException,java.rmi.RemoteException;

}

------------------------------------------------------------------
File : CalcARSBeanLocal
package bean;

/**
* Local interface for CalculatorBean.
*/
public interface CalcARSBeanLocal
extends javax.ejb.EJBLocalObject
{

}
------------------------------------------------------------------
File : CalcARSBeanLocalHome
package bean;

/*
* Local home interface for CalculatorBean.
*/
public interface CalcARSBeanLocalHome
extends javax.ejb.EJBLocalHome
{
public static final String COMP_NAME="java:comp/env/ejb/CalculatorBeanLocal";
public static final String JNDI_NAME="CalculatorBeanLocal";

public bean.CalcARSBeanLocal create()
throws javax.ejb.CreateException;

}
------------------------------------------------------------------
File : CalcARSSessionBean
package bean;


/*
* SessionBean.java
*
*/

import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

/**
* @author Deepak Kumar
* @Web http://www.roseindia.net
* @Email deepak@roseindia.net
*/

/**
* This is the Test Session Bean
*
* @ejb:bean type="Stateless"
* name="CalculatorBean"
* jndi-name="CalculatorSessionBean"
* display-name="EJB Calculator Session Bean"
*
* @ejb:env-entry name="CalculatorBean" type="java.lang.String" value="calculatorbean"
*/

public class CalcARSSessionBean implements SessionBean{

public void ejbCreate() throws CreateException {
System.out.println("ejbCreate remote");
}

public void setSessionContext( SessionContext aContext ) throws EJBException {

}



public void ejbActivate() throws EJBException {

}

public void ejbPassivate() throws EJBException {

}

public void ejbRemove() throws EJBException {

}

/**
* The method that returns the multiplied value
*
* @ejb:interface-method view-type="remote"
*/
public int multiply(int val1, int val2){
System.out.println("I am from multiply");
System.out.println("I am from multiply : " + val1 + " * " + val2);
return val1*val2;
}

}
------------------------------------------------------------------
File : Main.java
import bean.CountLocal;

import javax.naming.InitialContext;

import bean.CountRemote;

import java.util.Properties;

import javax.naming.Context;
import javax.naming.NamingException;

import javax.rmi.PortableRemoteObject;

public class Main {

public static void main(String[] a) throws Exception {
boolean debug = true;
String name = "java2s";

Context ctx1 = null;
System.out.println("ARSSSsssssssss try getting ctx");
try {
weblogic.jndi.Environment environment = new weblogic.jndi.Environment();
environment.setInitialContextFactory("weblogic.jndi.WLInitialContextFactory");
environment.setProviderUrl("t3://localhost:7101");
environment.setSecurityPrincipal("weblogic");
environment.setSecurityCredentials("weblogic");
environment.setRMIClientTimeout(7000L);
environment.setRequestTimeout(7000L);
ctx1 = environment.getInitialContext();
environment.setCreateIntermediateContexts(true);
System.out.println(environment.getRMIClientTimeout());
System.out.println(environment.getRequestTimeout());
System.out.println("Got Context1: " + ctx1);
}
catch ( NamingException ne ) {
ne.printStackTrace();
}

System.out.println("ARSSSsssssssss beg");
CountRemote service = (CountRemote) ctx1.lookup("ejb.CountBean/remote");

int countVal = 9;

service.set(countVal);
countVal = service.count();
System.out.println(countVal);
System.out.println("Calling count() on beans...");

countVal = service.count();
System.out.println(countVal);

service.remove();

}

}
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