statementbean.java

我在加拿大学习的一个比较复杂的在线银行程序.

package com.ebusiness.ebank.ejb.entitybean;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: eBusiness Inc., All right reserved</p>
 * @author unascribed
 * @version 1.0
 */

import java.sql.Timestamp;
import javax.ejb.EntityBean;
import javax.ejb.CreateException;
import javax.ejb.EntityContext;

import com.ebusiness.ebank.bean.StatementValue;

abstract public class StatementBean implements EntityBean
{
    private EntityContext ctx;

    abstract public Long getObjectID();
    abstract public void setObjectID(Long oid);

    abstract public Timestamp getBankingDate();
    abstract public void setBankingDate(Timestamp bankingDate);
    abstract public String getDescription();
    abstract public void setDescription(String description);
    abstract public double getWithdrawal();
    abstract public void setWithdrawal(double withdrawal);
    abstract public double getDeposit();
    abstract public void setDeposit(double deposit);
    abstract public double getBalance();
    abstract public void setBalance(double balance);
    abstract public String getAccountNo();
    abstract public void setAccountNo(String accountNo);
    abstract public String getClientCardNo();
    abstract public void setClientCardNo(String clientCardNo);

    abstract public String getCreateUserID();
    abstract public void setCreateUserID(String createUserID);
    abstract public Timestamp getCreateDate();
    abstract public void setCreateDate(Timestamp createDate);


    // Business methods

    /**
     * Parse the entity bean value to StatementValue object
     *
     * @return StatementValue
     */

    public long getStatementOID()
    {
        return this.getObjectID().longValue();
    }

    public StatementValue getValueObject()
    {
        StatementValue value = new StatementValue();
        value.setObjectID(this.getObjectID().longValue());
        value.setBankingDate(this.getBankingDate());
        value.setDescription(this.getDescription());
        value.setWithdrawal(this.getWithdrawal());
        value.setDeposit(this.getDeposit());
        value.setBalance(this.getBalance());
        value.setAccountNo(this.getAccountNo());
        value.setClientCardNo(this.getClientCardNo());

        value.setCreateUserID(this.getCreateUserID());
        value.setCreateDate(this.getCreateDate());

        return value;
    }

    //This method will insert a record to the Statement table.
    public Long ejbCreate(StatementValue value)
         throws CreateException
    {
        this.setBankingDate(new Timestamp(value.getBankingDate().getTime()));
        this.setDescription(value.getDescription());
        this.setWithdrawal(value.getWithdrawal());
        this.setDeposit(value.getDeposit());
        this.setBalance(value.getBalance());
        this.setAccountNo(value.getAccountNo());
        this.setClientCardNo(value.getClientCardNo());

        this.setCreateUserID(value.getCreateUserID());
        this.setCreateDate(new Timestamp((new java.util.Date()).getTime()));


        return null; //for container managed persistence
    }

    public void ejbPostCreate(StatementValue value) {}

    public void ejbActivate() {}

    public void ejbLoad() {}

    public void ejbPassivate() {}

    public void ejbRemove() //this method will delete the record from database
    {
        //Log.info("An Acocunt with ID = " + "" + " is being deleted from database");
    }

    public void ejbStore() {}

    public void setEntityContext(EntityContext ctx)
    {
        this.ctx = ctx;
    }

    public void unsetEntityContext() {}
}