Adjust database parameters

app/src/main/java/io/timelimit/android/data/Extensions.kt

@@ -0,0 +1,26 @@
+/*
+ * TimeLimit Copyright <C> 2019 - 2022 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+package io.timelimit.android.data
+
+import android.database.Cursor
+
+fun Cursor.consume() {
+    this.use {
+        while (moveToNext()) {
+            // do nothing
+        }
+    }
+}

app/src/main/java/io/timelimit/android/data/RoomDatabase.kt

@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2022 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,6 +21,7 @@ import androidx.room.Database
 import androidx.room.InvalidationTracker
 import androidx.room.Room
 import androidx.room.RoomDatabase
+import androidx.sqlite.db.SupportSQLiteDatabase
 import io.timelimit.android.async.Threads
 import io.timelimit.android.data.dao.DerivedDataDao
 import io.timelimit.android.data.invalidation.Observer
@@ -125,6 +126,14 @@ abstract class RoomDatabase: RoomDatabase(), io.timelimit.android.data.Database
                     DatabaseMigrations.MIGRATE_TO_V38
                 )
                 .setQueryExecutor(Threads.database)
+                .addCallback(object: Callback() {
+                    override fun onOpen(db: SupportSQLiteDatabase) {
+                        super.onOpen(db)
+
+                        db.query("PRAGMA journal_mode = PERSIST").consume()
+                        db.query("PRAGMA journal_size_limit = 32768").consume()
+                    }
+                })
                 .build()
         }
     }