greendao使用详解

1.首先学简单的配置

https://www.jianshu.com/p/ec37ea99ef69 ， https://www.jianshu.com/p/53083f782ea2

2.简单的增删改查

https://www.jianshu.com/p/53083f782ea2

3.稍复杂的查

QueryBuilder很重要

1.且查询(下面例子查username == xxx且userpwd==xxx的数据)

        Query query = daoSession.queryBuilder(UserBean.class).where(UserBeanDao.Properties.UserName.eq(userName)).where(UserBeanDao.Properties.UserPwd.eq(userPwd)).build();
        List list = query.list();

2.或查询（查询买方是currentUserName或者卖方是currentUserName的所有数据）

        QueryBuilder qb = daoSession.getOrderBeanDao().queryBuilder();
        //查询涉及到本人的订单，都列出来（本人作为买方或者卖方都查出来）
        qb.whereOr(OrderBeanDao.Properties.OrderBuyUser.eq(MyApplication.currenUserName), OrderBeanDao.Properties.OrderSeilUser.eq(MyApplication.currenUserName));
        datas = qb.list();

3.删除查询(删掉xxx条件下的数据，下面例子是删除当前OwenerId所关联的全部数据)

       QueryBuilder queryBuilder = daoSession.queryBuilder(Book.class).where(BookDao.Properties.OwnerId.eq(MyApplication.currenUserId));
        DeleteQuery deleteQuery = queryBuilder.buildDelete();
        deleteQuery.executeDeleteWithoutDetachingEntities();

多表关联

看这两篇
https://www.cnblogs.com/woaixingxing/p/7772138.html

https://blog.csdn.net/RobotHost/article/details/70098744

一对一toone 主外键

一对多 tomany主外键