account.java

J2ME编的手机助手 文件下载解压缩以后,是一个NetBeans的工程文件,如果有NB的朋友,可以直接打开编辑 源文件在src目录下面,可执行文件在dist目录下 功能如下 1

/*
 * Account.java
 * 一笔账目的定义
 * Created on 2007年3月11日, 下午5:27
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package net.bccn.account.model;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import javax.microedition.rms.RecordComparator;
import net.bccn.account.util.*;

/**
 *
 * @author hadeslee
 */
public class Account implements Record{
    private String type,detail;
    private float money;
    private Date date=new Date();//标准日期,结束日期
    private Date from=new Date();//起始日期
    private String remark;
    private int id;
    private int mask;
    public static final int YEAR=0x00000001;
    public static final int MONTH=0x00000001<<1;
    public static final int DAY=0x00000001<<2;
    private boolean isPhase=false;//是否按阶段查
    public static final String NAME="Account";//名字
    /** Creates a new instance of Account */
    public Account() {
        remark="";
    }
    //复制构造函数
    public Account(Account ac){
        this.type=ac.type;
        this.detail=ac.detail;
        this.money=ac.money;
        this.date.setTime(ac.date.getTime());
        this.remark=ac.remark;
        this.id=ac.id;
    }
    
    public void fromBytes(byte[] data)throws IOException {
        ByteArrayInputStream bin=new ByteArrayInputStream(data);
        DataInputStream din=new DataInputStream(bin);
        String name=din.readUTF();
        if(!name.equals(Account.NAME)){
            return;
        }
        type=din.readUTF();
        detail=din.readUTF();
        money=din.readFloat();
        date.setTime(din.readLong());
        remark=din.readUTF();
    }
    public static Account getAccount(byte[] data)throws IOException{
        Account ac=new Account();
        ByteArrayInputStream bin=new ByteArrayInputStream(data);
        DataInputStream din=new DataInputStream(bin);
        String name=din.readUTF();
        if(!name.equals(Account.NAME)){
            ac.setType("不可能匹配的");
            return ac;
        }
        ac.type=din.readUTF();
        ac.detail=din.readUTF();
        ac.money=din.readFloat();
        ac.date.setTime(din.readLong());
        ac.remark=din.readUTF();
        din.close();
        return ac;
    }
    public Record getEmptyRecord(){
        return new Account();
    }
    //设置掩码
    public void setMask(int mask){
        //如果没有设置日期,那么比较日期就没有意义了,所以直接返回
        if(date==null)
            return;
        this.mask=mask;
        isPhase=false;//如果按掩码查询,则区间为false
    }
    //设置区间查询
    public void setPhase(){
        isPhase=true;
        mask=0;//如果按区间来查询,则掩码没有意义,所以设其为0
    }
    //设置起始日期
    public void setFrom(Date date){
        from.setTime(date.getTime());
    }
    public byte[] toBytes()throws IOException {
        ByteArrayOutputStream bout=new ByteArrayOutputStream();
        DataOutputStream dout=new DataOutputStream(bout);
        dout.writeUTF(Account.NAME);
        dout.writeUTF(type);
        dout.writeUTF(detail);
        dout.writeFloat(money);
        dout.writeLong(date.getTime());
        dout.writeUTF(remark);
        dout.flush();
        return bout.toByteArray();
    }
    
    public int getID() {
        return id;
    }
    public void setID(int id){
        this.id=id;
    }
    public int getMask(){
        return mask;
    }
    public boolean matches(byte[] b) {
        try{
            Account demo=Account.getAccount(b);
            if(demo.getType().equals("不可能匹配的")){
                return false;
            }
            Calendar demoCal=Calendar.getInstance();
            Calendar me=Calendar.getInstance();
            me.setTime(date);
            demoCal.setTime(demo.getDate());
            //如果掩码不等于0,则说明要比较时间了
            if(mask!=0){
                Calendar temp=Calendar.getInstance();
                temp.setTime(demo.date);
                if((mask&YEAR)!=0){
                    if(me.get(Calendar.YEAR)!=demoCal.get(Calendar.YEAR)){
                        return false;
                    }
                }
                if((mask&MONTH)!=0){
                    if(me.get(Calendar.MONTH)!=demoCal.get(Calendar.MONTH)){
                        return false;
                    }
                }
                if((mask&DAY)!=0){
                    if(me.get(Calendar.DATE)!=demoCal.get(Calendar.DATE)){
                        return false;
                    }
                }
            }
            //如果要查询阶段,则另一种处理了
            else if(isPhase){
                long demoLong=(demo.getDate().getTime()+Util.OFF_SET)/86400000;
                long fromLong=(from.getTime()+Util.OFF_SET)/86400000;
                long toLong=(date.getTime()+Util.OFF_SET)/86400000;
                if(demoLong>=fromLong&&demoLong<=toLong){
                    
                } else
                    return false;
            }
            return ((this.type!=null?this.type.equals(demo.type):true)&&
                    (this.detail!=null?this.detail.equals(demo.detail):true)&&
                    (this.money!=0?this.money>=demo.money:true)&&
                    (this.remark.equals("")?true:demo.remark.startsWith(this.remark)));
        } catch(Exception exe){
            return false;
        }
    }
    
    public int compare(byte[] b, byte[] b0) {
        try{
            Account temp1=(Account)Account.getAccount(b);
            Account temp2=(Account)Account.getAccount(b0);
            if((temp1.date.getTime()+Util.OFF_SET)/86400000==
                    (temp2.date.getTime()+Util.OFF_SET)/86400000){
                return RecordComparator.EQUIVALENT;
            }
            return ((temp1.date.getTime()+Util.OFF_SET)/86400000<
                    (temp2.date.getTime()+Util.OFF_SET)/86400000?
                RecordComparator.PRECEDES:
                RecordComparator.FOLLOWS);
        } catch(Exception exe){
            return RecordComparator.EQUIVALENT;
        }
    }
    
    public String getType() {
        return type;
    }
    
    public void setType(String type) {
        this.type = type;
    }
    
    public String getDetail() {
        return detail;
    }
    
    public void setDetail(String detail) {
        this.detail = detail;
    }
    
    public float getMoney() {
        return money;
    }
    
    public void setMoney(float money) {
        this.money = money;
    }
    
    public Date getDate() {
        return date;
    }
    
    public void setDate(Date date) {
        this.date = date;
    }
    
    public String getRemark() {
        return remark;
    }
    
    public void setRemark(String remark) {
        this.remark = remark;
    }
    private String getDateString(){
        Calendar cal=Calendar.getInstance();
        cal.setTime(date);
        return ""+cal.get(Calendar.YEAR)+"-"+(cal.get(Calendar.MONTH)+1)+
                "-"+cal.get(Calendar.DATE);
    }
    public String toString(){
        return "类型:"+type+",金额:"+money+",日期:"+getDateString();
    }
}