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面向对象数据库框架设计 

public void saveUser(User user){	DBHelper dbHelper=new DBHelper(this);	SQLiteDatabase db=dbHelper.getWritableDatabase();	db.execSQL("create table if not exists db_user(name,varchar(20),password varchar(10),)");	ContentValues values=new ContentValues();	values.put("name",user.getName());	values.put("password",user.getPassword());	db.beginTransaction();	int scheduleID=-1;	try{	db.insert("schedule",null,values);	db.setTransactionSuccessful();	}finally{	}	db.endTransaction();	db.close();}

1.调用层不关心数据的创建和在哪里创建

hashMap<String,String>=getValues(User)

目录结构

db--|

@Target(ElementType.TYPE)@Retention(RetentionPolicy.RUNTIME)public @interface DbTable(){	String value();}@Target(ElementType.FIELD)@Retention(RetentionPolicy.RUNTIME)public @interface DbField{	String value();}public interface IBaseDao
   
    {	Long insert(T entity);	Long update(T entity,T where);	delete();		select();}public abstract class BaseDao
    
      implements IBaseDao{	private SQLiteDatabase database;	protected boolean init(Class
     
       entity,SQLiteDatabase sqLiteDatabase){		database=sqLiteDatabase;	}	public Long insert(T entity){		return null;	}	public Long update(T entity,T where){		return null;	}}public class BaseDaoFactory{	private String sqliteDatabasePath;	private SQLiteDatabase sqlLiteDatabase;	public BaseDaoFactory(){		sqliteDatabasePath=Enviroment.getDataDirectory().getAbsolutePath()+"user.db";		openDatabase();	}		public void openDatabase(){		this.sqLiteDatabase=SQLiteDatabase.openOrCreateDatabase(sqliteDatabasePath,null);	}	public synchronized
      
       ,M> T getDataHelper(Class
       
         class,Class 
        
          entityClass ); BaseDao baseDao=null; try{ baseDao=Class.newInstance(); baseDao.init(); }catch(){ }}@DbTable("tb_common_user")public class User{ @DbField("tb_name") public String name; @DbField("tb_password") public String password;}
        
       
      
     
    
   

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