package Ġcom . pub n ub . components . data Ċ Ċ import Ġandroid . content . Context Ċ import Ġandroid . util . Log Ċ import Ġandroidx . room . Room Ċ import Ġandroidx . room . Room Database Ċ import Ġandroidx . room . migration . Migration Ċ import Ġcom . pub n ub . components . Default Database Ċ import Ġcom . pub n ub . components . Pub N ub Database Ċ import Ġcom . pub n ub . components . as Pub N ub Ċ import Ġcom . pub n ub . components . data . channel . Channel Dao Ċ import Ġcom . pub n ub . components . data . channel . DB Channel Ċ import Ġcom . pub n ub . components . data . channel . DB Channel With Members Ċ import Ġcom . pub n ub . components . data . member . DB Member Ċ import Ġcom . pub n ub . components . data . member . DB Member With Channels Ċ import Ġcom . pub n ub . components . data . member . Member Dao Ċ import Ġcom . pub n ub . components . data . membership . DB Membership Ċ import Ġcom . pub n ub . components . data . membership . Membership Dao Ċ import Ġcom . pub n ub . components . data . message . DB Message Ċ import Ġcom . pub n ub . components . data . message . Message Dao Ċ import Ġcom . pub n ub . components . data . message . action . DB Message Action Ċ import Ġcom . pub n ub . components . data . message . action . DB Message With Actions Ċ import Ġcom . pub n ub . components . data . message . action . Message Action Dao Ċ Ċ object ĠDatabase Ġ{ ĊĠĠĠ Ġprivate Ġconst Ġval ĠDATABASE _ NAME Ġ= Ġ" pub n ub _ database " ĊĊĠĠĠ Ġlateinit Ġvar ĠINSTANCE : ĠPub N ub Database < Message Dao < DB Message , ĠDB Message With Actions >, ĠMessage Action Dao < DB Message Action >, ĠChannel Dao < DB Channel , ĠDB Channel With Members >, ĠMember Dao < DB Member , ĠDB Member With Channels >, ĠMembers hip Dao < DB Membership >> ĊĊĠĠĠ Ġfun Ġinitialize ( ĊĠĠĠĠĠĠĠ Ġapplication Context : ĠContext , ĊĠĠĠĠĠĠĠ Ġbuilder : Ġ( Room Database . Builder < Default Database >) Ġ-> ĠRoom Database . Builder < Default Database > Ġ= Ġ{ Ġit Ġ} ĊĠĠĠ Ġ): ĠDefault Database Ġ= ĊĠĠĠĠĠĠĠ ĠRoom . database Builder ( application Context , ĠDefault Database :: class . java , ĠDATABASE _ NAME ) ĊĠĠĠĠĠĠĠĠĠĠĠ Ġ. add Migrations ( MESSAGE _ RE ACTION _ M IG RATION ) ĊĠĠĠĠĠĠĠĠĠĠĠ Ġ. apply Ġ{ Ġbuilder ( this ) Ġ} ĊĠĠĠĠĠĠĠĠĠĠĠ Ġ. build () ĊĠĠĠĠĠĠĠĠĠĠĠ Ġ. also Ġ{ ĊĠĠĠĠĠĠĠĠĠĠĠĠĠĠĠ ĠLog . e (" TAG ", Ġ" Database Ġbuild ") ĊĠĠĠĠĠĠĠĠĠĠĠĠĠĠĠ ĠINSTANCE Ġ= Ġit . as Pub N ub () ĊĠĠĠĠĠĠĠĠĠĠĠ Ġ} ĊĊĠĠĠ Ġ// Ġregion ĠM igrations ĊĠĠĠ Ġprivate Ġval ĠMESSAGE _ RE ACTION _ M IG RATION Ġ= ĠMigration ( 1 , Ġ 2 ) Ġ{ ĊĠĠĠĠĠĠĠ Ġit . exec SQL (" CREATE ĠTABLE ĠIF ĠNOT ĠEXISTS Ġ` message _ action ` Ġ(` channel ` ĠTEXT ĠNOT ĠNULL , Ġ` user ` ĠTEXT ĠNOT ĠNULL , Ġ` message Timestamp ` ĠINTEGER ĠNOT ĠNULL , Ġ` published ` ĠINTEGER ĠNOT ĠNULL , Ġ` type ` ĠTEXT ĠNOT ĠNULL , Ġ` value ` ĠTEXT ĠNOT ĠNULL , Ġ` id ` ĠTEXT ĠNOT ĠNULL , ĠPRIMARY ĠKEY (` id ` )) ") ĊĠĠĠ Ġ} ĊĠĠĠ Ġ// Ġend region Ċ }