employeeejb.java

高级java2 大学教程(含源码,经典的Java学习教程

// EmployeeEJB.java
// EmployeeEJB is an entity EJB that uses container-managed
// persistence to persist Employee data in a database.
package com.deitel.advjhtp1.ejb.entity.cmp;

// Java core libraries
import java.rmi.RemoteException;

// Java standard extensions
import javax.ejb.*;

public class EmployeeEJB implements EntityBean {
   
   private EntityContext entityContext;

   // container-managed fields
   public Integer employeeID;
   public String socialSecurityNumber;
   public String firstName;
   public String lastName;
   public String title;
   public Double salary;
   
   // get Employee ID
   public Integer getEmployeeID()
   {
      return employeeID;
   }
   
   // set social security number
   public void setSocialSecurityNumber( String number )
   {
      socialSecurityNumber = number;
   }
   
   // get social security number
   public String getSocialSecurityNumber()
   {
      return socialSecurityNumber;
   }
   
   // set first name
   public void setFirstName( String name )
   {
      firstName = name;
   }
   
   // get first name
   public String getFirstName()
   {
      return firstName;
   }
   
   // set last name
   public void setLastName( String name )
   {
      lastName = name;
   }
   
   // get last name
   public String getLastName()
   {
      return lastName;
   }
   
   // set title
   public void setTitle( String jobTitle )
   {
      title = jobTitle;
   }
   
   // get title
   public String getTitle()
   {
      return title;
   }
   
   // set salary
   public void setSalary( Double amount )
   {
      salary = amount;
   }
   
   // get salary
   public Double getSalary() 
   {
      return salary;
   }
   
   // create new Employee instance
   public Integer ejbCreate( Integer primaryKey )
   {    
      employeeID = primaryKey;
      
      return null;
   }
   
   // do post-creation tasks when creating new Employee
   public void ejbPostCreate( Integer primaryKey ) {}
   
   // set EntityContext
   public void setEntityContext( EntityContext context )
   {
      entityContext = context;
   }
   
   // unset EntityContext
   public void unsetEntityContext() 
   {
      entityContext = null;
   }
   
   // activate Employee instance
   public void ejbActivate() 
   {
      employeeID = ( Integer ) entityContext.getPrimaryKey();
   }
   
   // passivate Employee instance
   public void ejbPassivate() 
   {
      employeeID = null;
   }
   
   // load Employee instance in database
   public void ejbLoad() {}
   
   // store Employee instance in database
   public void ejbStore() {}
   
   // remove Employee instance from database
   public void ejbRemove() {}  
}

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