Merge pull request TeamNewPipe#12816 from TeamNewPipe/dbFix

Minor fixes for database

Author: Stypox

app/src/main/java/org/schabi/newpipe/database/history/dao/HistoryDAO.kt

@@ -9,13 +9,14 @@ package org.schabi.newpipe.database.history.dao
 import androidx.room.Dao
 import androidx.room.Query
 import io.reactivex.rxjava3.core.Flowable
+import org.schabi.newpipe.database.BasicDAO
 import org.schabi.newpipe.database.history.model.SearchHistoryEntry
 
 @Dao
-interface SearchHistoryDAO : HistoryDAO<SearchHistoryEntry> {
+interface SearchHistoryDAO : BasicDAO<SearchHistoryEntry> {
 
     @get:Query("SELECT * FROM search_history WHERE id = (SELECT MAX(id) FROM search_history)")
-    override val latestEntry: SearchHistoryEntry
+    val latestEntry: SearchHistoryEntry?
 
     @Query("DELETE FROM search_history")
     override fun deleteAll(): Int

app/src/main/java/org/schabi/newpipe/database/history/dao/SearchHistoryDAO.kt

@@ -10,15 +10,13 @@ import androidx.room.Dao
 import androidx.room.Query
 import androidx.room.RewriteQueriesToDropUnusedColumns
 import io.reactivex.rxjava3.core.Flowable
+import org.schabi.newpipe.database.BasicDAO
 import org.schabi.newpipe.database.history.model.StreamHistoryEntity
 import org.schabi.newpipe.database.history.model.StreamHistoryEntry
 import org.schabi.newpipe.database.stream.StreamStatisticsEntry
 
 @Dao
-abstract class StreamHistoryDAO : HistoryDAO<StreamHistoryEntity> {
-
-    @get:Query("SELECT * FROM stream_history WHERE access_date = (SELECT MAX(access_date) FROM stream_history)")
-    abstract override val latestEntry: StreamHistoryEntity
+abstract class StreamHistoryDAO : BasicDAO<StreamHistoryEntity> {
 
     @Query("SELECT * FROM stream_history")
     abstract override fun getAll(): Flowable<List<StreamHistoryEntity>>

app/src/main/java/org/schabi/newpipe/database/history/dao/StreamHistoryDAO.kt

@@ -40,6 +40,8 @@
 import java.util.Date;
 import java.util.Locale;
 import java.util.Objects;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public class BackupRestoreSettingsFragment extends BasePreferenceFragment {
 
@@ -155,9 +157,9 @@ private void requestImportPathResult(final ActivityResult result) {
     }
 
     private void exportDatabase(final StoredFileHelper file, final Uri exportDataUri) {
-        try {
+        try (ExecutorService executor = Executors.newSingleThreadExecutor()) {
             //checkpoint before export
-            NewPipeDatabase.checkpoint();
+            executor.submit(NewPipeDatabase::checkpoint).get();
 
             final SharedPreferences preferences = PreferenceManager
                     .getDefaultSharedPreferences(requireContext());