AccountHome.java-优快云博客

本文介绍了一个用于EJB容器的Account Home接口定义，该接口作为Account EJB对象工厂，提供了创建、查找账户的方法及获取银行总资产等业务逻辑。

package examples;

import javax.ejb.*;
import java.util.Collection;
import java.rmi.RemoteException;

/**
* This is the home interface for Account. This
* interface is implemented by the EJB container's tools - the
* implemented object is called the home object, which
* is a factory for EJB objects.
*/
public interface AccountHome extends EJBHome {

   /**
    * We define a single create() method is in this home interface,
    * which corresponds to the ejbCreate() method in AccountBean.
    * This method creates the local EJB object.
    *
    * Notice that the local home interface returns a local interface,
    * whereas the bean returns a PK.
    *
    * Notice we don't throw RemoteExceptions because we are local.
    *
    * @param accountID The number of the account (unique)
    * @param ownerName The name of the person who owns the account
    * @return The newly created local object.
    */
   Account create(String accountID, String ownerName) throws CreateException, RemoteException;

   /**
    * Finds an Account by its primary Key (Account ID)
    */
   public Account findByPrimaryKey(AccountPK key) throws FinderException, RemoteException;

   /**
    * Finds all Accounts under an owner's name
    */
   public Collection findByOwnerName(String name) throws FinderException, RemoteException;

   /**
    * This home business method is independent of any particular
    * account. It returns the total of all accounts in the bank.
    */
   public double getTotalBankValue() throws AccountException, RemoteException;

}