?? message.java
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package com.easyjf.dbo.example;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import com.easyjf.dbo.EasyJDB;
import com.easyjf.dbo.IObject;
public class Message implements IObject {
private String cid;
private String title;
private String content;
private String inputUser;
private Date inputTime;
private Integer status;
public String getTableName() {
return "message";
}
public String getKeyField() {
return "cid";
}
public String getKeyGenerator() {
return "com.easyjf.dbo.IdGenerator";
}
public String getCid() {
return cid;
}
public void setCid(String cid) {
this.cid = cid;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public java.util.Date getInputTime() {
return inputTime;
}
public void setInputTime(java.util.Date inputTime) {
this.inputTime = inputTime;
}
public String getInputUser() {
return inputUser;
}
public void setInputUser(String inputUser) {
this.inputUser = inputUser;
}
public Integer getStatus() {
return status;
}
public void setStatus(Integer status) {
this.status = status;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
//把對象持久化(保存)到關系數據庫中
public boolean save()
{
EasyJDB db=EasyJDB.getInstance();
return db.saveOrUpdate(this);
}
//從持久化存儲設備數據庫系統中永久刪除對象
public boolean del()
{
EasyJDB db=EasyJDB.getInstance();
return db.del(this);
}
//通過主鍵id從數據庫系統中讀取數據,返回一個對象
public static Message read(String cid)
{
EasyJDB db=EasyJDB.getInstance();
return (Message)db.get(Message.class,cid);
}
//通過sql從數據庫中查詢符合條件的數據,返回對象列表
public static List query(String sql)
{
EasyJDB db=EasyJDB.getInstance();
return db.query(Message.class,sql);
}
//應用演示代碼
public static void main(String[] args) {
Message m=new Message();
m.setTitle("標題");
m.setContent("內容");
m.setInputTime(new Date());
m.setInputUser("test");
m.setStatus(new Integer(1));
if(m.save())
{
System.out.print("成功把對象保存到關系數據庫中");
}
else
{
System.out.println("保存數據出錯!");
}
//查詢數據
EasyJDB db=EasyJDB.getInstance();
Collection paras=new ArrayList();
paras.add(new Integer(0));
for(int i=0;i<10;i++)
System.out.println(db.uniqueResult("select count(*) from Message where status>=?",paras));
}
}
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