value.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.bean;

/**
 * <p>Title: </p>
 * <p>Description: This is a super class, all of the eBank value beans
 *                  shall extends this class</p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: eBusiness Inc., All right reserved</p>
 * @author unascribed
 * @version 1.0
 */

import java.io.Serializable;
import java.lang.Cloneable;
import java.lang.CloneNotSupportedException;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;

public abstract class Value implements Serializable, Cloneable
{
    private long objectID;
    private String createUserID;
    private Timestamp createDate;
    private String updateUserID;
    private Timestamp updateDate;
    private Timestamp effectiveDate;
    private Timestamp expiryDate;
    private String action;

    private static SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

    private static Timestamp defaultEffectiveDate     = Timestamp.valueOf("2000-01-01 00:00:00.000000000");
    private static Timestamp defaultExpiryDate  = Timestamp.valueOf("9999-12-31 00:00:00.000000000");

    public Value() {}

    public Value(long oid)
    {
        this.objectID = oid;
    }

    public long getObjectID()
    {
        return this.objectID;
    }

    public void setObjectID(long objectID)
    {
        this.objectID = objectID;
    }

    public String getCreateUserID()
    {
        return this.createUserID;
    }

    public void setCreateUserID(String createUserID)
    {
        if (createUserID != null)
            this.createUserID = createUserID.toUpperCase();
    }

    public Timestamp getCreateDate()
    {
        return this.createDate;
    }

    public void setCreateDate(Timestamp createDate)
    {
        this.createDate = createDate;
    }

    public String getUpdateUserID()
    {
        return this.updateUserID;
    }

    public void setUpdateUserID(String updateUserID)
    {
        if (updateUserID != null)
            this.updateUserID = updateUserID.toUpperCase();
    }

    public Timestamp getUpdateDate()
    {
        return this.updateDate;
    }

    public void setUpdateDate(Timestamp updateDate)
    {
        this.updateDate = updateDate;
    }

    //Return default effective date if there is no effectivedate specified
    public Timestamp getEffectiveDate()
    {
        if (this.effectiveDate == null)
            return defaultEffectiveDate;
        return this.effectiveDate;
    }

	public void setEffectiveDate(Timestamp effectiveDate) {
		this.effectiveDate = effectiveDate;
	}

	public Timestamp getExpiryDate()
    {
        if (this.expiryDate == null)
            return defaultExpiryDate;
        return this.expiryDate;
      }


    public void setExpiryDate(Timestamp expiryDate)
    {
            this.expiryDate = expiryDate;
    }

    public String getAction()
    {
        return this.action;
    }

    public void setAction(String action)
    {
       this.action = action;
    }

    /**
     * @Return true if expiry date is before current date. False otherwise.
     */
    public boolean isExpired()
    {
        return isExpired(new Timestamp(System.currentTimeMillis()));
    }

      /**
     * @Return true if expiry date is before the specified date. False otherwise.
     */
    public boolean isExpired(Timestamp date)
    {
        if (expiryDate != null)
        {
            if (date == null)
                date = new Timestamp(System.currentTimeMillis()); //default to current date
            String compareDate = formatter.format(date);
            String expDate = formatter.format(expiryDate);
            if (expDate.compareTo(compareDate) < 0 )
                return true;
        }
        return false;
    }

    /**
     * @Return true if current date is greater than or equal to effectiveDate and
     *         if current date is less than or equal to expiryDate
     */
    public boolean isActive()
    {
        return isActive(new Timestamp(System.currentTimeMillis()));
    }

      /**
     * @Return true if the specified date is greater than or equal to effectiveDate and
     *         if current date is less than or equal to expiryDate
     */
    public boolean isActive(Timestamp date)
    {
        if (date == null)
            date = new Timestamp(System.currentTimeMillis()); //default to current date
        if (!date.before(getEffectiveDate()) && !this.isExpired(date))
            return true;
        return false;
    }

    public Object clone()
    {
        Object obj = null;
        try
        {
            obj = super.clone();
        }
        catch (CloneNotSupportedException e)
        {
            //This should not occur since it implements Cloneable");
        }
        return obj;
    }

    public String getValueType()
    {
        String className = this.getClass().getName();
        return className.substring(className.lastIndexOf('.') + 1, className.indexOf("Value"));
    }

    protected String getEffExpiryDateAsString()
    {
        String effDate = (this.effectiveDate == null ? "" : ", EffectiveDate = " + formatter.format(this.effectiveDate));
        String expDate = (this.expiryDate == null ? "" : ", ExpiryDate = " + formatter.format(this.expiryDate));
        return effDate + expDate;
    }

    public abstract String toString();
}