Optimize library query
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8b67255186
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@ -17,7 +17,7 @@ class DbOpenHelper(context: Context)
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/**
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* Version of the database.
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*/
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const val DATABASE_VERSION = 7
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const val DATABASE_VERSION = 8
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}
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override fun onCreate(db: SQLiteDatabase) = with(db) {
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@ -30,8 +30,9 @@ class DbOpenHelper(context: Context)
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// DB indexes
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execSQL(MangaTable.createUrlIndexQuery)
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execSQL(MangaTable.createFavoriteIndexQuery)
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execSQL(MangaTable.createLibraryIndexQuery)
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execSQL(ChapterTable.createMangaIdIndexQuery)
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execSQL(ChapterTable.createUnreadChaptersIndexQuery)
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execSQL(HistoryTable.createChapterIdIndexQuery)
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}
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@ -60,6 +61,11 @@ class DbOpenHelper(context: Context)
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if (oldVersion < 7) {
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db.execSQL(TrackTable.addLibraryId)
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}
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if (oldVersion < 8) {
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db.execSQL("DROP INDEX IF EXISTS mangas_favorite_index")
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db.execSQL(MangaTable.createLibraryIndexQuery)
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db.execSQL(ChapterTable.createUnreadChaptersIndexQuery)
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}
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}
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override fun onConfigure(db: SQLiteDatabase) {
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@ -49,6 +49,10 @@ object ChapterTable {
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val createMangaIdIndexQuery: String
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get() = "CREATE INDEX ${TABLE}_${COL_MANGA_ID}_index ON $TABLE($COL_MANGA_ID)"
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val createUnreadChaptersIndexQuery: String
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get() = "CREATE INDEX ${TABLE}_unread_by_manga_index ON $TABLE($COL_MANGA_ID, $COL_READ) " +
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"WHERE $COL_READ = 0"
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val sourceOrderUpdateQuery: String
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get() = "ALTER TABLE $TABLE ADD COLUMN $COL_SOURCE_ORDER INTEGER DEFAULT 0"
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@ -60,6 +60,7 @@ object MangaTable {
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val createUrlIndexQuery: String
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get() = "CREATE INDEX ${TABLE}_${COL_URL}_index ON $TABLE($COL_URL)"
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val createFavoriteIndexQuery: String
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get() = "CREATE INDEX ${TABLE}_${COL_FAVORITE}_index ON $TABLE($COL_FAVORITE)"
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val createLibraryIndexQuery: String
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get() = "CREATE INDEX library_${COL_FAVORITE}_index ON $TABLE($COL_FAVORITE) " +
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"WHERE $COL_FAVORITE = 1"
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}
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