From 54ff196bb1e5307864153447fca3a981387aa414 Mon Sep 17 00:00:00 2001 From: Ammar Githam Date: Tue, 8 Jun 2021 22:39:00 +0900 Subject: [PATCH] Convert AppDatabase to kotlin --- app/build.gradle | 3 + .../java/awais/instagrabber/db/AppDatabase.kt | 480 +++++++++--------- .../java/awais/instagrabber/db/Converters.kt | 6 +- 3 files changed, 235 insertions(+), 254 deletions(-) diff --git a/app/build.gradle b/app/build.gradle index 284981a4..88b5af11 100755 --- a/app/build.gradle +++ b/app/build.gradle @@ -1,6 +1,7 @@ apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: "androidx.navigation.safeargs" +apply plugin: 'kotlin-kapt' apply from: 'sentry.gradle' def getGitHash = { -> @@ -146,6 +147,7 @@ android { // Error: Duplicate files during packaging of APK exclude 'META-INF/LICENSE.md' exclude 'META-INF/LICENSE-notice.md' + exclude 'META-INF/atomicfu.kotlin_module' } testOptions.unitTests { @@ -196,6 +198,7 @@ dependencies { implementation "androidx.room:room-runtime:$room_version" implementation "androidx.room:room-guava:$room_version" implementation "androidx.room:room-ktx:$room_version" + kapt "androidx.room:room-compiler:$room_version" annotationProcessor "androidx.room:room-compiler:$room_version" // CameraX diff --git a/app/src/main/java/awais/instagrabber/db/AppDatabase.kt b/app/src/main/java/awais/instagrabber/db/AppDatabase.kt index 8f7d47cb..1a357974 100644 --- a/app/src/main/java/awais/instagrabber/db/AppDatabase.kt +++ b/app/src/main/java/awais/instagrabber/db/AppDatabase.kt @@ -1,270 +1,252 @@ -package awais.instagrabber.db; - -import android.content.ContentValues; -import android.content.Context; -import android.database.Cursor; -import android.database.sqlite.SQLiteDatabase; -import android.util.Log; -import android.util.Pair; - -import androidx.annotation.NonNull; -import androidx.room.Database; -import androidx.room.Room; -import androidx.room.RoomDatabase; -import androidx.room.TypeConverters; -import androidx.room.migration.Migration; -import androidx.sqlite.db.SupportSQLiteDatabase; - -import java.time.Instant; -import java.time.LocalDateTime; -import java.time.ZoneId; -import java.util.ArrayList; -import java.util.List; - -import awais.instagrabber.db.dao.AccountDao; -import awais.instagrabber.db.dao.DMLastNotifiedDao; -import awais.instagrabber.db.dao.FavoriteDao; -import awais.instagrabber.db.dao.RecentSearchDao; -import awais.instagrabber.db.entities.Account; -import awais.instagrabber.db.entities.DMLastNotified; -import awais.instagrabber.db.entities.Favorite; -import awais.instagrabber.db.entities.RecentSearch; -import awais.instagrabber.models.enums.FavoriteType; -import awais.instagrabber.utils.Utils; - -@Database(entities = {Account.class, Favorite.class, DMLastNotified.class, RecentSearch.class}, - version = 6) -@TypeConverters({Converters.class}) -public abstract class AppDatabase extends RoomDatabase { - private static final String TAG = AppDatabase.class.getSimpleName(); - - private static AppDatabase INSTANCE; - - public abstract AccountDao accountDao(); - - public abstract FavoriteDao favoriteDao(); - - public abstract DMLastNotifiedDao dmLastNotifiedDao(); - - public abstract RecentSearchDao recentSearchDao(); - - public static AppDatabase getDatabase(final Context context) { - if (INSTANCE == null) { - synchronized (AppDatabase.class) { - if (INSTANCE == null) { - INSTANCE = Room.databaseBuilder(context.getApplicationContext(), AppDatabase.class, "cookiebox.db") - .addMigrations(MIGRATION_1_2, MIGRATION_2_3, MIGRATION_3_4, MIGRATION_4_5, MIGRATION_5_6) - .build(); +package awais.instagrabber.db + +import android.content.ContentValues +import android.content.Context +import android.database.sqlite.SQLiteDatabase +import android.util.Log +import androidx.room.Database +import androidx.room.Room +import androidx.room.RoomDatabase +import androidx.room.TypeConverters +import androidx.room.migration.Migration +import androidx.sqlite.db.SupportSQLiteDatabase +import awais.instagrabber.db.dao.AccountDao +import awais.instagrabber.db.dao.DMLastNotifiedDao +import awais.instagrabber.db.dao.FavoriteDao +import awais.instagrabber.db.dao.RecentSearchDao +import awais.instagrabber.db.entities.Account +import awais.instagrabber.db.entities.DMLastNotified +import awais.instagrabber.db.entities.Favorite +import awais.instagrabber.db.entities.RecentSearch +import awais.instagrabber.utils.Utils +import awais.instagrabber.utils.extensions.TAG +import java.time.Instant +import java.time.LocalDateTime +import java.time.ZoneId +import java.util.* + +@Database(entities = [Account::class, Favorite::class, DMLastNotified::class, RecentSearch::class], version = 6) +@TypeConverters(Converters::class) +abstract class AppDatabase : RoomDatabase() { + abstract fun accountDao(): AccountDao + abstract fun favoriteDao(): FavoriteDao + abstract fun dmLastNotifiedDao(): DMLastNotifiedDao + abstract fun recentSearchDao(): RecentSearchDao + + companion object { + private lateinit var INSTANCE: AppDatabase + + fun getDatabase(context: Context): AppDatabase { + if (!this::INSTANCE.isInitialized) { + synchronized(AppDatabase::class.java) { + if (!this::INSTANCE.isInitialized) { + INSTANCE = Room.databaseBuilder(context.applicationContext, AppDatabase::class.java, "cookiebox.db") + .addMigrations(MIGRATION_1_2, MIGRATION_2_3, MIGRATION_3_4, MIGRATION_4_5, MIGRATION_5_6) + .build() + } } } + return INSTANCE } - return INSTANCE; - } - static final Migration MIGRATION_1_2 = new Migration(1, 2) { - @Override - public void migrate(@NonNull SupportSQLiteDatabase db) { - db.execSQL("ALTER TABLE cookies ADD " + Account.COL_FULL_NAME + " TEXT"); - db.execSQL("ALTER TABLE cookies ADD " + Account.COL_PROFILE_PIC + " TEXT"); + private val MIGRATION_1_2: Migration = object : Migration(1, 2) { + override fun migrate(db: SupportSQLiteDatabase) { + db.execSQL("ALTER TABLE cookies ADD " + Account.COL_FULL_NAME + " TEXT") + db.execSQL("ALTER TABLE cookies ADD " + Account.COL_PROFILE_PIC + " TEXT") + } } - }; - - static final Migration MIGRATION_2_3 = new Migration(2, 3) { - @Override - public void migrate(@NonNull SupportSQLiteDatabase db) { - final List oldFavorites = backupOldFavorites(db); - // recreate with new columns (as there will be no doubt about the `query_display` column being present or not in the future versions) - db.execSQL("DROP TABLE " + Favorite.TABLE_NAME); - db.execSQL("CREATE TABLE " + Favorite.TABLE_NAME + " (" - + Favorite.COL_ID + " INTEGER PRIMARY KEY," - + Favorite.COL_QUERY + " TEXT," - + Favorite.COL_TYPE + " TEXT," - + Favorite.COL_DISPLAY_NAME + " TEXT," - + Favorite.COL_PIC_URL + " TEXT," - + Favorite.COL_DATE_ADDED + " INTEGER)"); - // add the old favorites back - for (final Favorite oldFavorite : oldFavorites) { - insertOrUpdateFavorite(db, oldFavorite); + private val MIGRATION_2_3: Migration = object : Migration(2, 3) { + override fun migrate(db: SupportSQLiteDatabase) { + val oldFavorites = backupOldFavorites(db) + // recreate with new columns (as there will be no doubt about the `query_display` column being present or not in the future versions) + db.execSQL("DROP TABLE " + Favorite.TABLE_NAME) + db.execSQL("CREATE TABLE " + Favorite.TABLE_NAME + " (" + + Favorite.COL_ID + " INTEGER PRIMARY KEY," + + Favorite.COL_QUERY + " TEXT," + + Favorite.COL_TYPE + " TEXT," + + Favorite.COL_DISPLAY_NAME + " TEXT," + + Favorite.COL_PIC_URL + " TEXT," + + Favorite.COL_DATE_ADDED + " INTEGER)") + // add the old favorites back + for (oldFavorite in oldFavorites) { + insertOrUpdateFavorite(db, oldFavorite) + } } } - }; - - static final Migration MIGRATION_3_4 = new Migration(3, 4) { - @Override - public void migrate(@NonNull SupportSQLiteDatabase db) { - // Required when migrating to Room. - // The original table primary keys were not 'NOT NULL', so the migration to Room were failing without the below migration. - // Taking this opportunity to rename cookies table to accounts - - // Create new table with name 'accounts' - db.execSQL("CREATE TABLE " + Account.TABLE_NAME + " (" - + Account.COL_ID + " INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT," - + Account.COL_UID + " TEXT," - + Account.COL_USERNAME + " TEXT," - + Account.COL_COOKIE + " TEXT," - + Account.COL_FULL_NAME + " TEXT," - + Account.COL_PROFILE_PIC + " TEXT)"); - // Insert all data from table 'cookies' to 'accounts' - db.execSQL("INSERT INTO " + Account.TABLE_NAME + " (" - + Account.COL_UID + "," - + Account.COL_USERNAME + "," - + Account.COL_COOKIE + "," - + Account.COL_FULL_NAME + "," - + Account.COL_PROFILE_PIC + ") " - + "SELECT " - + Account.COL_UID + "," - + Account.COL_USERNAME + "," - + Account.COL_COOKIE + "," - + Account.COL_FULL_NAME + "," - + Account.COL_PROFILE_PIC - + " FROM cookies"); - // Drop old cookies table - db.execSQL("DROP TABLE cookies"); - - // Create favorite backup table - db.execSQL("CREATE TABLE " + Favorite.TABLE_NAME + "_backup (" - + Favorite.COL_ID + " INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT," - + Favorite.COL_QUERY + " TEXT," - + Favorite.COL_TYPE + " TEXT," - + Favorite.COL_DISPLAY_NAME + " TEXT," - + Favorite.COL_PIC_URL + " TEXT," - + Favorite.COL_DATE_ADDED + " INTEGER)"); - // Insert all data from table 'favorite' to 'favorite_backup' - db.execSQL("INSERT INTO " + Favorite.TABLE_NAME + "_backup (" - + Favorite.COL_QUERY + "," - + Favorite.COL_TYPE + "," - + Favorite.COL_DISPLAY_NAME + "," - + Favorite.COL_PIC_URL + "," - + Favorite.COL_DATE_ADDED + ") " - + "SELECT " - + Favorite.COL_QUERY + "," - + Favorite.COL_TYPE + "," - + Favorite.COL_DISPLAY_NAME + "," - + Favorite.COL_PIC_URL + "," - + Favorite.COL_DATE_ADDED - + " FROM " + Favorite.TABLE_NAME); - // Drop favorites - db.execSQL("DROP TABLE " + Favorite.TABLE_NAME); - // Rename favorite_backup to favorites - db.execSQL("ALTER TABLE " + Favorite.TABLE_NAME + "_backup RENAME TO " + Favorite.TABLE_NAME); + private val MIGRATION_3_4: Migration = object : Migration(3, 4) { + override fun migrate(db: SupportSQLiteDatabase) { + // Required when migrating to Room. + // The original table primary keys were not 'NOT NULL', so the migration to Room were failing without the below migration. + // Taking this opportunity to rename cookies table to accounts + + // Create new table with name 'accounts' + db.execSQL("CREATE TABLE " + Account.TABLE_NAME + " (" + + Account.COL_ID + " INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT," + + Account.COL_UID + " TEXT," + + Account.COL_USERNAME + " TEXT," + + Account.COL_COOKIE + " TEXT," + + Account.COL_FULL_NAME + " TEXT," + + Account.COL_PROFILE_PIC + " TEXT)") + // Insert all data from table 'cookies' to 'accounts' + db.execSQL("INSERT INTO " + Account.TABLE_NAME + " (" + + Account.COL_UID + "," + + Account.COL_USERNAME + "," + + Account.COL_COOKIE + "," + + Account.COL_FULL_NAME + "," + + Account.COL_PROFILE_PIC + ") " + + "SELECT " + + Account.COL_UID + "," + + Account.COL_USERNAME + "," + + Account.COL_COOKIE + "," + + Account.COL_FULL_NAME + "," + + Account.COL_PROFILE_PIC + + " FROM cookies") + // Drop old cookies table + db.execSQL("DROP TABLE cookies") + + // Create favorite backup table + db.execSQL("CREATE TABLE " + Favorite.TABLE_NAME + "_backup (" + + Favorite.COL_ID + " INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT," + + Favorite.COL_QUERY + " TEXT," + + Favorite.COL_TYPE + " TEXT," + + Favorite.COL_DISPLAY_NAME + " TEXT," + + Favorite.COL_PIC_URL + " TEXT," + + Favorite.COL_DATE_ADDED + " INTEGER)") + // Insert all data from table 'favorite' to 'favorite_backup' + db.execSQL("INSERT INTO " + Favorite.TABLE_NAME + "_backup (" + + Favorite.COL_QUERY + "," + + Favorite.COL_TYPE + "," + + Favorite.COL_DISPLAY_NAME + "," + + Favorite.COL_PIC_URL + "," + + Favorite.COL_DATE_ADDED + ") " + + "SELECT " + + Favorite.COL_QUERY + "," + + Favorite.COL_TYPE + "," + + Favorite.COL_DISPLAY_NAME + "," + + Favorite.COL_PIC_URL + "," + + Favorite.COL_DATE_ADDED + + " FROM " + Favorite.TABLE_NAME) + // Drop favorites + db.execSQL("DROP TABLE " + Favorite.TABLE_NAME) + // Rename favorite_backup to favorites + db.execSQL("ALTER TABLE " + Favorite.TABLE_NAME + "_backup RENAME TO " + Favorite.TABLE_NAME) + } } - }; - - static final Migration MIGRATION_4_5 = new Migration(4, 5) { - @Override - public void migrate(@NonNull final SupportSQLiteDatabase database) { - database.execSQL("CREATE TABLE IF NOT EXISTS `dm_last_notified` (" + - "`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " + - "`thread_id` TEXT, " + - "`last_notified_msg_ts` INTEGER, " + - "`last_notified_at` INTEGER)"); - database.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS `index_dm_last_notified_thread_id` ON `dm_last_notified` (`thread_id`)"); + private val MIGRATION_4_5: Migration = object : Migration(4, 5) { + override fun migrate(database: SupportSQLiteDatabase) { + database.execSQL("CREATE TABLE IF NOT EXISTS `dm_last_notified` (" + + "`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " + + "`thread_id` TEXT, " + + "`last_notified_msg_ts` INTEGER, " + + "`last_notified_at` INTEGER)") + database.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS `index_dm_last_notified_thread_id` ON `dm_last_notified` (`thread_id`)") + } } - }; - - static final Migration MIGRATION_5_6 = new Migration(5, 6) { - @Override - public void migrate(@NonNull final SupportSQLiteDatabase database) { - database.execSQL("CREATE TABLE IF NOT EXISTS `recent_searches` (" + - "`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " + - "`ig_id` TEXT NOT NULL, " + - "`name` TEXT NOT NULL, " + - "`username` TEXT, " + - "`pic_url` TEXT, " + - "`type` TEXT NOT NULL, " + - "`last_searched_on` INTEGER NOT NULL)"); - database.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS `index_recent_searches_ig_id_type` ON `recent_searches` (`ig_id`, `type`)"); + private val MIGRATION_5_6: Migration = object : Migration(5, 6) { + override fun migrate(database: SupportSQLiteDatabase) { + database.execSQL("CREATE TABLE IF NOT EXISTS `recent_searches` (" + + "`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " + + "`ig_id` TEXT NOT NULL, " + + "`name` TEXT NOT NULL, " + + "`username` TEXT, " + + "`pic_url` TEXT, " + + "`type` TEXT NOT NULL, " + + "`last_searched_on` INTEGER NOT NULL)") + database.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS `index_recent_searches_ig_id_type` ON `recent_searches` (`ig_id`, `type`)") + } } - }; - @NonNull - private static List backupOldFavorites(@NonNull final SupportSQLiteDatabase db) { - // check if old favorites table had the column query_display - final boolean queryDisplayExists = checkColumnExists(db, Favorite.TABLE_NAME, "query_display"); - Log.d(TAG, "backupOldFavorites: queryDisplayExists: " + queryDisplayExists); - final List oldModels = new ArrayList<>(); - final String sql = "SELECT " - + "query_text," - + "date_added" - + (queryDisplayExists ? ",query_display" : "") - + " FROM " + Favorite.TABLE_NAME; - try (final Cursor cursor = db.query(sql)) { - if (cursor != null && cursor.moveToFirst()) { - do { - try { - final String queryText = cursor.getString(cursor.getColumnIndex("query_text")); - final Pair favoriteTypeQueryPair = Utils.migrateOldFavQuery(queryText); - if (favoriteTypeQueryPair == null) continue; - final FavoriteType type = favoriteTypeQueryPair.first; - final String query = favoriteTypeQueryPair.second; - final long epochMillis = cursor.getLong(cursor.getColumnIndex("date_added")); - final LocalDateTime localDateTime = LocalDateTime.ofInstant( - Instant.ofEpochMilli(epochMillis), - ZoneId.systemDefault() - ); - oldModels.add(new Favorite( - 0, - query, - type, - queryDisplayExists ? cursor.getString(cursor.getColumnIndex("query_display")) : null, - null, - localDateTime - )); - } catch (Exception e) { - Log.e(TAG, "onUpgrade", e); + private fun backupOldFavorites(db: SupportSQLiteDatabase): List { + // check if old favorites table had the column query_display + val queryDisplayExists = checkColumnExists(db, Favorite.TABLE_NAME, "query_display") + Log.d(TAG, "backupOldFavorites: queryDisplayExists: $queryDisplayExists") + val oldModels: MutableList = ArrayList() + val sql = ("SELECT " + + "query_text," + + "date_added" + + (if (queryDisplayExists) ",query_display" else "") + + " FROM " + Favorite.TABLE_NAME) + try { + db.query(sql).use { cursor -> + if (cursor != null && cursor.moveToFirst()) { + do { + try { + val queryText = cursor.getString(cursor.getColumnIndex("query_text")) + val favoriteTypeQueryPair = Utils.migrateOldFavQuery(queryText) ?: continue + val type = favoriteTypeQueryPair.first + val query = favoriteTypeQueryPair.second + val epochMillis = cursor.getLong(cursor.getColumnIndex("date_added")) + val localDateTime = LocalDateTime.ofInstant( + Instant.ofEpochMilli(epochMillis), + ZoneId.systemDefault() + ) + oldModels.add(Favorite( + 0, + query, + type, + if (queryDisplayExists) cursor.getString(cursor.getColumnIndex("query_display")) else null, + null, + localDateTime + )) + } catch (e: Exception) { + Log.e(TAG, "onUpgrade", e) + } + } while (cursor.moveToNext()) } - } while (cursor.moveToNext()); + } + } catch (e: Exception) { + Log.e(TAG, "onUpgrade", e) } - } catch (Exception e) { - Log.e(TAG, "onUpgrade", e); + Log.d(TAG, "backupOldFavorites: oldModels:$oldModels") + return oldModels } - Log.d(TAG, "backupOldFavorites: oldModels:" + oldModels); - return oldModels; - } - private static synchronized void insertOrUpdateFavorite(@NonNull final SupportSQLiteDatabase db, @NonNull final Favorite model) { - final ContentValues values = new ContentValues(); - values.put(Favorite.COL_QUERY, model.getQuery()); - values.put(Favorite.COL_TYPE, model.getType().toString()); - values.put(Favorite.COL_DISPLAY_NAME, model.getDisplayName()); - values.put(Favorite.COL_PIC_URL, model.getPicUrl()); - values.put(Favorite.COL_DATE_ADDED, model.getDateAdded().atZone(ZoneId.systemDefault()).toInstant().toEpochMilli()); - int rows; - if (model.getId() >= 1) { - rows = db.update(Favorite.TABLE_NAME, - SQLiteDatabase.CONFLICT_IGNORE, - values, - Favorite.COL_ID + "=?", - new String[]{String.valueOf(model.getId())}); - } else { - rows = db.update(Favorite.TABLE_NAME, - SQLiteDatabase.CONFLICT_IGNORE, - values, - Favorite.COL_QUERY + "=?" + " AND " + Favorite.COL_TYPE + "=?", - new String[]{model.getQuery(), model.getType().toString()}); - } - if (rows != 1) { - db.insert(Favorite.TABLE_NAME, SQLiteDatabase.CONFLICT_IGNORE, values); + @Synchronized + private fun insertOrUpdateFavorite(db: SupportSQLiteDatabase, model: Favorite) { + val values = ContentValues() + values.put(Favorite.COL_QUERY, model.query) + values.put(Favorite.COL_TYPE, model.type.toString()) + values.put(Favorite.COL_DISPLAY_NAME, model.displayName) + values.put(Favorite.COL_PIC_URL, model.picUrl) + values.put(Favorite.COL_DATE_ADDED, model.dateAdded!!.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli()) + val rows: Int = if (model.id >= 1) { + db.update(Favorite.TABLE_NAME, + SQLiteDatabase.CONFLICT_IGNORE, + values, + Favorite.COL_ID + "=?", arrayOf(model.id.toString())) + } else { + db.update(Favorite.TABLE_NAME, + SQLiteDatabase.CONFLICT_IGNORE, + values, + Favorite.COL_QUERY + "=?" + " AND " + Favorite.COL_TYPE + "=?", arrayOf(model.query, model.type.toString())) + } + if (rows != 1) { + db.insert(Favorite.TABLE_NAME, SQLiteDatabase.CONFLICT_IGNORE, values) + } } - } - private static boolean checkColumnExists(@NonNull final SupportSQLiteDatabase db, - @NonNull final String tableName, - @NonNull final String columnName) { - boolean exists = false; - try (Cursor cursor = db.query("PRAGMA table_info(" + tableName + ")")) { - if (cursor.moveToFirst()) { - do { - final String currentColumn = cursor.getString(cursor.getColumnIndex("name")); - if (currentColumn.equals(columnName)) { - exists = true; + @Suppress("SameParameterValue") + private fun checkColumnExists( + db: SupportSQLiteDatabase, + tableName: String, + columnName: String, + ): Boolean { + var exists = false + try { + db.query("PRAGMA table_info($tableName)").use { cursor -> + if (cursor.moveToFirst()) { + do { + val currentColumn = cursor.getString(cursor.getColumnIndex("name")) + if (currentColumn == columnName) { + exists = true + } + } while (cursor.moveToNext()) } - } while (cursor.moveToNext()); - + } + } catch (ex: Exception) { + Log.e(TAG, "checkColumnExists", ex) } - } catch (Exception ex) { - Log.e(TAG, "checkColumnExists", ex); + return exists } - return exists; } -} +} \ No newline at end of file diff --git a/app/src/main/java/awais/instagrabber/db/Converters.kt b/app/src/main/java/awais/instagrabber/db/Converters.kt index 6feb3f49..2e82e108 100644 --- a/app/src/main/java/awais/instagrabber/db/Converters.kt +++ b/app/src/main/java/awais/instagrabber/db/Converters.kt @@ -7,8 +7,7 @@ import java.time.LocalDateTime import java.time.ZoneId import java.time.ZoneOffset -object Converters { - @JvmStatic +class Converters { @TypeConverter fun fromFavoriteTypeString(value: String?): FavoriteType? = if (value == null) null @@ -18,16 +17,13 @@ object Converters { null } - @JvmStatic @TypeConverter fun favoriteTypeToString(favoriteType: FavoriteType?): String? = favoriteType?.toString() - @JvmStatic @TypeConverter fun fromTimestampToLocalDateTime(value: Long?): LocalDateTime? = if (value == null) null else LocalDateTime.ofInstant(Instant.ofEpochMilli(value), ZoneOffset.systemDefault()) - @JvmStatic @TypeConverter fun localDateTimeToTimestamp(localDateTime: LocalDateTime?): Long? = localDateTime?.atZone(ZoneId.systemDefault())?.toInstant()?.toEpochMilli() } \ No newline at end of file