Java/EJB3/Interceptor

annotation override interceptor

/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License).  You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the license at
 * https://glassfish.dev.java.net/public/CDDLv1.0.html or
 * glassfish/bootstrap/legal/CDDLv1.0.txt.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at glassfish/bootstrap/legal/CDDLv1.0.txt.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 */
package enterprise.annotation_override_interceptor_appclient;
import java.util.List;
import javax.ejb.EJB;
import enterprise.annotation_override_interceptor_ejb.*;
public class StatelessSessionAppClient {
    @EJB
    private static StatelessSession sless;
    public static void main(String args[]) {
  try {
            sless.initUpperCase("hello, World!!");
            sless.initLowerCase("Build.xml");
        } catch (Exception  badEx) {
    badEx.printStackTrace();
        }
        List<String> upperList = sless.getInterceptorNamesFor("initUpperCase");
  printList("initUpperCase", upperList);
  try {
      sless.isOddNumber(7);
        } catch (Exception  badEx) {
    badEx.printStackTrace();
        }
  List<String> isOddNumberList = sless.getInterceptorNamesFor("isOddNumber");
  printList("isOddNumber", isOddNumberList);
    }
    private static void printList(String msg, List<String> list) {
  System.out.print("Interceptors invoked for " + msg + "(): ");
  String delimiter = "";
        for (String str : list) {
            System.out.print(delimiter + str);
      delimiter = ", ";
        }
  System.out.println("}");
    }
}

/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License).  You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the license at
 * https://glassfish.dev.java.net/public/CDDLv1.0.html or
 * glassfish/bootstrap/legal/CDDLv1.0.txt.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at glassfish/bootstrap/legal/CDDLv1.0.txt.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 */
package enterprise.annotation_override_interceptor_ejb;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;
import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
// This bean uses two interceptors to validate
// the input to its (only) business method.
// Note that a single interceptor would suffice
// but to demonstrate the use of interceptor
// chaining, we use two interceptors
@Stateless
@Interceptors({ArgumentsChecker.class})
public class StatelessSessionBean
    implements StatelessSession {
    private static final String KEY = "interceptorNameList";
    private static Map<String, List<String>> interceptorNamesForMethod
            = new HashMap<String, List<String>>();
    //The bean interceptor method just caches the interceptor names
    //  in a map which is queried in the getInterceptorNamesFor() method
    @AroundInvoke
    private Object intercept(InvocationContext invCtx)
      throws Exception {
  System.out.println("Entered aroundInvoke for Bean");
        Map<String, Object> ctxData = invCtx.getContextData();
        List<String> interceptorNameList = (List<String>) ctxData.get(KEY);
        if (interceptorNameList == null) {
            interceptorNameList = new ArrayList<String>();
            ctxData.put(KEY, interceptorNameList);
        }
        //Add this interceptor also to the list of interceptors invoked!!
        interceptorNameList.add("StatelessSessionBean");
        
        //Cache the interceptor name list in a map that can be queried later
        String methodName = invCtx.getMethod().getName();
  synchronized (interceptorNamesForMethod) {
            interceptorNamesForMethod.put(methodName, interceptorNameList);
  }
  return invCtx.proceed();
    }
    // This business method is called after the interceptor methods.
    // Hence it is guaranteed that the argument to this method is not null
    // and it starts with a letter
    public String initUpperCase(String val) {
        String first = val.substring(0, 1);
        return first.toUpperCase() + val.substring(1);
    }
    // This business method is called after the interceptor methods.
    // Hence it is guaranteed that the argument to this method is not null
    // and it starts with a letter
    public String initLowerCase(String val) {
        String first = val.substring(0, 1);
        return first.toLowerCase() + val.substring(1);
    }
    //Note:-
    //  Since this method takes a int as a parameter, the ArgumentChecker
    //  inteceptor is disabled in the ejb-jar.xml for this method.
    public boolean isOddNumber(int val) {
        return ((val % 2) != 0);
    }
    /**
     * Only the default interceptor is used to intercept this method
     */
    public List<String> getInterceptorNamesFor(String methodName) {
        return interceptorNamesForMethod.get(methodName);
    }
}
/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License).  You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the license at
 * https://glassfish.dev.java.net/public/CDDLv1.0.html or
 * glassfish/bootstrap/legal/CDDLv1.0.txt.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at glassfish/bootstrap/legal/CDDLv1.0.txt.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 */
package enterprise.annotation_override_interceptor_ejb;
import java.util.List;
import javax.ejb.Remote;
@Remote
public interface StatelessSession {
    public String initUpperCase(String val)
        throws BadArgumentException;
    public String initLowerCase(String val)
        throws BadArgumentException;
    public boolean isOddNumber(int val)
        throws BadArgumentException;
    public List<String> getInterceptorNamesFor(String methodName);
}
/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License).  You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the license at
 * https://glassfish.dev.java.net/public/CDDLv1.0.html or
 * glassfish/bootstrap/legal/CDDLv1.0.txt.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at glassfish/bootstrap/legal/CDDLv1.0.txt.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 */
package enterprise.annotation_override_interceptor_ejb;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.lang.reflect.Method;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
/**
 * This is the default interceptor
 */
public class NullChecker {
    @AroundInvoke
    public Object checkIfNull(InvocationContext ctx)
        throws Exception {
        Map<String, Object> ctxData = ctx.getContextData();
        List<String> interceptorNameList = (List<String>)
            ctxData.get("interceptorNameList");
        if (interceptorNameList == null) {
            interceptorNameList = new ArrayList<String>();
            ctxData.put("interceptorNameList", interceptorNameList);
        }
        //Now add this interceptor name to the list
        interceptorNameList.add("NullChecker");
        Method method = ctx.getMethod();
        Object param = ctx.getParameters()[0];
        if (param == null) {
            // An interceptor can throw any runtime exception or
            // application exceptions that are allowed in the
            // throws clause of the business method
            throw new BadArgumentException("Illegal argument: null");
        }
        // Proceed to the next interceptor OR business method
        return ctx.proceed();
    }
}

Around InvokeMethod

File: Employee.java
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PostRemove;
@Entity
public class Employee implements java.io.Serializable {
  private int id;
  private String firstName;
  private String lastName;
  @Id
  @GeneratedValue
  public int getId() {
    return id;
  }

  @PostRemove
  public void postRemove()
  {
     System.out.println("@PostRemove");
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getFirstName() {
    return firstName;
  }
  public void setFirstName(String first) {
    this.firstName = first;
  }
  public String getLastName() {
    return lastName;
  }
  public void setLastName(String last) {
    this.lastName = last;
  }
}

File: EmployeeService.java
import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
@Stateless
public class EmployeeService implements EmployeeServiceLocal, EmployeeServiceRemote {
  public EmployeeService() {
  }
  
  @Interceptors(Profiler.class)
  public void doAction() {
    System.out.println("do Action");
  }
}

File: EmployeeServiceLocal.java

import java.util.Collection;
import javax.ejb.Local;
@Local
public interface EmployeeServiceLocal {
    public void doAction();

}

File: EmployeeServiceRemote.java


import java.util.Collection;
import javax.ejb.Remote;
@Remote
public interface EmployeeServiceRemote{
  public void doAction();  
}

File: Profiler.java
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
public class Profiler {
  @AroundInvoke
  public Object profile(InvocationContext invocation) throws Exception {
    long startTime = System.currentTimeMillis();
    try {
      return invocation.proceed();
    } finally {
      long endTime = System.currentTimeMillis() - startTime;
      System.out.println("Method " + invocation.getMethod() + " took " + endTime + " (ms)");
    }
  }
}

File: jndi.properties
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

File: Main.java
import java.util.Date;
import javax.naming.InitialContext;

public class Main {
  public static void main(String[] a) throws Exception {
    EmployeeServiceRemote service = null;
    // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");
    // service = (HelloService)new InitialContext().lookup("java:comp/env/ejb/HelloService");
    service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeService/remote");
    
    

    
    service.doAction();
  }
}

EJB Tutorial from JBoss: Callback Listener

File: CustomerCallbackListener.java
/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.tutorial.callback.bean;
import javax.persistence.PreRemove;
import javax.persistence.PostRemove;
import javax.persistence.PreUpdate;
import javax.persistence.PostUpdate;
import javax.persistence.PostLoad;
import javax.persistence.PrePersist;
import javax.persistence.PostPersist;
/**
 * @author 



== EJB Tutorial from JBoss: Interceptor ==






   
  <!-- start source code -->
   
    <source lang="java">

File: AccountsCancelInterceptor.java
/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.tutorial.interceptor.bean;
import javax.interceptor.InvocationContext;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.Session;
/**
 * 
 * @author 



== Get Ejb Info From InvocationContext ==






   
  <!-- start source code -->
   
    <source lang="java">

File: Employee.java
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PostRemove;
@Entity
public class Employee implements java.io.Serializable {
  private int id;
  private String firstName;
  private String lastName;
  @Id
  @GeneratedValue
  public int getId() {
    return id;
  }

  @PostRemove
  public void postRemove()
  {
     System.out.println("@PostRemove");
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getFirstName() {
    return firstName;
  }
  public void setFirstName(String first) {
    this.firstName = first;
  }
  public String getLastName() {
    return lastName;
  }
  public void setLastName(String last) {
    this.lastName = last;
  }
}

File: EmployeeBean.java
import javax.ejb.Stateful;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
@Stateful
public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {
  public EmployeeBean() {
  }
  public void doAction() {
    System.out.println("Processing...");
  }
  @AroundInvoke
  public Object TimerLog(InvocationContext ctx) throws Exception {
    String beanClassName = ctx.getClass().getName();
    String businessMethodName = ctx.getMethod().getName();
    String target = beanClassName + "." + businessMethodName;
    long startTime = System.currentTimeMillis();
    System.out.println("Invoking " + target);
    try {
      return ctx.proceed();
    } finally {
      System.out.println("Exiting " + target);
      long totalTime = System.currentTimeMillis() - startTime;
      System.out.println("Business method " + businessMethodName + "in " + beanClassName + "takes "
          + totalTime + "ms to execute");
    }
  }
}

File: EmployeeServiceLocal.java
import javax.ejb.Local;
import javax.ejb.Remote;

@Local
public interface EmployeeServiceLocal{
  public void doAction();
}

File: EmployeeServiceRemote.java
import javax.ejb.Remote;
@Remote
public interface EmployeeServiceRemote {
  public void doAction();

}

File: jndi.properties
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

File: Main.java
import javax.ejb.EJB;
import javax.naming.InitialContext;
public class Main {
  
  public static void main(String[] a) throws Exception {
    EmployeeServiceRemote service = null;
    // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");
    // service = (HelloService)new InitialContext().lookup("java:comp/env/ejb/HelloService");
    service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeBean/remote");
    service.doAction();
  }
}

Get Set Parameters In InvocationContext

File: EmployeeBean.java

import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
@Stateless
@Interceptors( { MyInterceptor.class })
public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {
  public EmployeeBean() {
  }

  public Long addBid(String userId,Long itemId,Double bidPrice) {
    System.out.println("Bid for " + itemId + " received with price" + bidPrice);
    return 0L;
  }
}

File: EmployeeServiceLocal.java

import javax.ejb.Local;
import javax.jws.WebParam;
@Local
public interface EmployeeServiceLocal {
  public Long addBid(String userId,Long itemId,Double bidPrice);

}

File: EmployeeServiceRemote.java
import javax.ejb.Remote;

@Remote
public interface EmployeeServiceRemote {
  public Long addBid(String userId,Long itemId,Double bidPrice);
}

File: MyInterceptor.java
import javax.annotation.Resource;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
public class MyInterceptor {
  @Resource
  private javax.ejb.SessionContext ctx;
  @AroundInvoke
  public Object checkUserRole(InvocationContext ic) throws Exception {
    System.out.println("Interceptor invoked for " + ic.getMethod().getName());
    if (ic.getMethod().getName().equals("addBid")
        && (((String) (ic.getContextData().get("MemberStatus"))).equals("Gold"))) {
      Object[] params = ic.getParameters();
      params[2] = new Double((Double) params[2] * 0.99);
      System.out.println("DiscountVerifier Reducing Price by 1 percent");
      ic.setParameters(params);
    }
    return ic.proceed();
  }
}

File: Employee.java

import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PostRemove;
@Entity
public class Employee implements java.io.Serializable {
  private int id;
  private String firstName;
  private String lastName;
  @Id
  @GeneratedValue
  public int getId() {
    return id;
  }

  @PostRemove
  public void postRemove()
  {
     System.out.println("@PostRemove");
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getFirstName() {
    return firstName;
  }
  public void setFirstName(String first) {
    this.firstName = first;
  }
  public String getLastName() {
    return lastName;
  }
  public void setLastName(String last) {
    this.lastName = last;
  }
}

File: Main.java
import javax.ejb.EJB;
import javax.naming.InitialContext;

public class Main {
  public static void main(String[] a) throws Exception {
    EmployeeServiceRemote service = null;
    // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");
    // service = (HelloService)new
    // InitialContext().lookup("java:comp/env/ejb/HelloService");
    service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeBean/remote");

    service.addBid("userId",1L,0.1);
    

  }
}

File: jndi.properties
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

Mark Interceptors For A Remote Method

File: Employee.java

import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PostRemove;
@Entity
public class Employee implements java.io.Serializable {
  private int id;
  private String firstName;
  private String lastName;
  @Id
  @GeneratedValue
  public int getId() {
    return id;
  }

  @PostRemove
  public void postRemove()
  {
     System.out.println("@PostRemove");
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getFirstName() {
    return firstName;
  }
  public void setFirstName(String first) {
    this.firstName = first;
  }
  public String getLastName() {
    return lastName;
  }
  public void setLastName(String last) {
    this.lastName = last;
  }
}

File: EmployeeBean.java

import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
@Stateless
@Interceptors( { MyInterceptor.class })
public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {
  public EmployeeBean() {
  }
  @Interceptors(MyInterceptor.class)
  public Long addBid(String userId,Long itemId,Double bidPrice) {
    System.out.println("Bid for " + itemId + " received with price" + bidPrice);
    return 0L;
  }
}

File: EmployeeServiceLocal.java

import javax.ejb.Local;
import javax.jws.WebParam;
@Local
public interface EmployeeServiceLocal {
  public Long addBid(String userId,Long itemId,Double bidPrice);

}

File: EmployeeServiceRemote.java
import javax.ejb.Remote;

@Remote
public interface EmployeeServiceRemote {
  public Long addBid(String userId,Long itemId,Double bidPrice);
}

File: MyInterceptor.java
import javax.annotation.Resource;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
public class MyInterceptor {
  @Resource
  private javax.ejb.SessionContext ctx;
  @AroundInvoke
  public Object checkUserRole(InvocationContext ic) throws Exception {
    System.out.println("*** CheckPermission Interceptor invoked for " + ic.getTarget() + " ***");
    if (!ctx.isCallerInRole("admin")) {
      throw new SecurityException("User: "" + ctx.getCallerPrincipal().getName()
          + "" does not have permissions for method " + ic.getMethod());
    }
    return ic.proceed();
  }
}

File: Main.java
import javax.ejb.EJB;
import javax.naming.InitialContext;

public class Main {
  public static void main(String[] a) throws Exception {
    EmployeeServiceRemote service = null;
    // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");
    // service = (HelloService)new
    // InitialContext().lookup("java:comp/env/ejb/HelloService");
    service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeBean/remote");

    service.addBid("userId",1L,0.1);
    

  }
}

File: jndi.properties
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

Use Interceptors To Check Permission

File: EmployeeBean.java

import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
@Stateless
@Interceptors( { MyInterceptor.class })
public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {
  public EmployeeBean() {
  }
  public Long addBid(String userId,Long itemId,Double bidPrice) {
    System.out.println("Bid for " + itemId + " received with price" + bidPrice);
    return 0L;
  }
}

File: EmployeeServiceLocal.java

import javax.ejb.Local;
import javax.jws.WebParam;
@Local
public interface EmployeeServiceLocal {
  public Long addBid(String userId,Long itemId,Double bidPrice);

}

File: EmployeeServiceRemote.java
import javax.ejb.Remote;

@Remote
public interface EmployeeServiceRemote {
  public Long addBid(String userId,Long itemId,Double bidPrice);
}

File: MyInterceptor.java
import javax.annotation.Resource;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
public class MyInterceptor {
  @Resource
  private javax.ejb.SessionContext ctx;
  @AroundInvoke
  public Object checkUserRole(InvocationContext ic) throws Exception {
    System.out.println("*** CheckPermission Interceptor invoked for " + ic.getTarget() + " ***");
    if (!ctx.isCallerInRole("admin")) {
      throw new SecurityException("User: "" + ctx.getCallerPrincipal().getName()
          + "" does not have permissions for method " + ic.getMethod());
    }
    return ic.proceed();
  }
}

File: Employee.java

import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PostRemove;
@Entity
public class Employee implements java.io.Serializable {
  private int id;
  private String firstName;
  private String lastName;
  @Id
  @GeneratedValue
  public int getId() {
    return id;
  }

  @PostRemove
  public void postRemove()
  {
     System.out.println("@PostRemove");
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getFirstName() {
    return firstName;
  }
  public void setFirstName(String first) {
    this.firstName = first;
  }
  public String getLastName() {
    return lastName;
  }
  public void setLastName(String last) {
    this.lastName = last;
  }
}

File: Main.java
import javax.ejb.EJB;
import javax.naming.InitialContext;

public class Main {
  public static void main(String[] a) throws Exception {
    EmployeeServiceRemote service = null;
    // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");
    // service = (HelloService)new
    // InitialContext().lookup("java:comp/env/ejb/HelloService");
    service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeBean/remote");

    service.addBid("userId",1L,0.1);
    

  }
}

File: jndi.properties
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099