db4o 记

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阅读 http://www-128.ibm.com/developerworks/cn/java/j-lo-db4o2/

下载地址 http://developer.db4o.com/files/folders/objectmanager_xx/default.aspx 有cn的

代码-----main

package com;

import bo.AutoInfo;
import bo.People;

import com.db4o.Db4o;
import com.db4o.ObjectContainer;

public class DB4OTest{

public static void main(String[] args){
  //打开数据库
  ObjectContainer db = Db4o.openFile("auto.yap");
  try{
   //构造 People 对象
   People peo = new People();
   peo.setId(1);
   peo.setAddress("成都市");
   peo.setName("张三");
   //构造 AutoInfo 对象
   AutoInfo ai = new AutoInfo();
   ai.setId(1);
   ai.setLicensePlate("川A00000");
   //设置 People 和 AutoInfo 的关系
   ai.setOwnerNo(peo);
   peo.addAutoInfo(ai);
   //保存对象
   db.set(peo);
  }finally{
   //关闭连接
   db.close();
  }
}
}
//--------------------------------

package bo;

public class People {

private java.lang.Integer _id;
private java.lang.String _name;
private java.lang.String _address;
private java.util.List<AutoInfo> _autoInfoList;

public java.lang.Integer getId() {
return _id;
}

public void setId(java.lang.Integer _id) {
this._id = _id;
}

public java.lang.String getName() {
return _name;
}

public void setName(java.lang.String _name) {
this._name = _name;
}

public java.lang.String getAddress() {
return _address;
}

public void setAddress(java.lang.String _address) {
this._address = _address;
}

public java.util.List<AutoInfo> getAutoInfoList() {
return this._autoInfoList;
}

public void addAutoInfo(AutoInfo _autoInfoList) {
  if (null == this._autoInfoList)
   this._autoInfoList = new java.util.ArrayList<AutoInfo>();
  this._autoInfoList.add(_autoInfoList);
}

}
//-----------------------------------

package bo;

public class AutoInfo{

private java.lang.Integer _id;
private java.lang.String _licensePlate;
private bo.People _ownerNo;

public java.lang.Integer getId () {
return _id;
}

public void setId (java.lang.Integer _id) {
this._id = _id;
}

public java.lang.String getLicensePlate () {
return _licensePlate;
}

public void setLicensePlate (java.lang.String _licensePlate) {
this._licensePlate = _licensePlate;
}

public bo.People getOwnerNo () {
return this._ownerNo;
}

public void setOwnerNo (bo.People _ownerNo) {
this._ownerNo = _ownerNo;
}

}

测试后使用 objectmanager 可以查看内容使用版本6.1