packagecom.bgycc.smartcanteen.data.dao;importandroidx.lifecycle.LiveData;importandroidx.room.Dao;importandroidx.room.Insert;importandroidx.room.OnConflictStrategy;importandroidx.room.Query;importandroidx.room.Update;importcom.bgycc.smartcanteen.entity.Command;importjava.util.List;@DaopublicinterfaceCommandDao{// 搜索所有未完成的指令(0为false)@Query("select * from command where finish == 0 order by id asc")LiveData<List<Command>>queryUndoneCommand();@Insert(onConflict=OnConflictStrategy.REPLACE)longinsertCommand(Commandcommand);@Update(onConflict=OnConflictStrategy.REPLACE)intupdateCommand(Commandcommand);}