ormLite框架持久化编程

最新推荐文章于 2022-07-15 19:08:49 发布

西西弗斯丶

最新推荐文章于 2022-07-15 19:08:49 发布

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本文链接：https://blog.youkuaiyun.com/iplayvs2008/article/details/12152043

本文通过一个具体的例子展示了如何使用 ormLite 框架进行 Android 应用的数据持久化操作。从创建数据库连接到定义数据访问对象（DAO），再到创建数据表和插入查询数据，提供了一套完整的实现流程。

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1.ormLite例子：

// you get the SQLiteOpenHelper from your Android Activity
ConnectionSource connectionSource =
     new AndroidConnectionSource(sqliteOpenHelper);

// instantiate the DAO to handle Account with String id
Dao<Account,String> accountDao =
     BaseDaoImpl.createDao(connectionSource, Account.class);

// if you need to create the 'accounts' table make this call
TableUtils.createTable(connectionSource, Account.class);

// create an instance of Account
String name = "Jim Smith";
Account account = new Account(name, "_secret");

// persist the account object to the database
// it should return 1 for the 1 row inserted
if (accountDao.create(account) != 1) {
     throw new Exception("Failure adding account");
}

// retrieve the account
Account account2 = accountDao.queryForId(name);
// show its password
System.out.println("Account: " + account2.getPassword());

// close the connection source
connectionSource.close();