package Ġcom . ed t . ut 3 . backend . database . da os Ċ Ċ import Ġandroidx . lifecycle . LiveData Ċ import Ġandroidx . room . Dao Ċ import Ġandroidx . room . Insert Ċ import Ġandroidx . room . On Conflict Strategy Ċ import Ġandroidx . room . Query Ċ import Ġcom . ed t . ut 3 . backend . cel cat . Course Ċ Ċ @ Dao Ċ interface ĠCourse Dao Ġ{ ĊĊĠĠĠ Ġ@ Insert ( on Conflict Ġ= ĠOn Conflict Strategy . REPLACE ) ĊĠĠĠ Ġsuspend Ġfun Ġinsert ( var arg Ġcourses : ĠCourse ) ĊĊĠĠĠ Ġ@ Query (" SELECT Ġ* ĠFROM Ġcourse ĠORDER ĠBY Ġtitle ") ĊĠĠĠ Ġsuspend Ġfun Ġselect All (): ĠList < Course > ĊĊĠĠĠ Ġ@ Query (" SELECT Ġ* ĠFROM Ġcourse ĠORDER ĠBY Ġtitle ") ĊĠĠĠ Ġfun Ġselect All LD (): ĠLive Data < List < Course >> ĊĊĠĠĠ Ġ@ Query (" DELETE ĠFROM Ġcourse Ġwhere Ġtitle Ġin Ġ(: titles )") ĊĠĠĠ Ġsuspend Ġfun Ġremove ( var arg Ġtitles : ĠString ) Ċ Ċ }