From 1c2812db481ab72aee5e1194ba6eff5c9edc39fb Mon Sep 17 00:00:00 2001
From: tibbi <tibor@kaputa.sk>
Date: Thu, 25 Oct 2018 17:43:41 +0200
Subject: [PATCH] use a singleton single threaded executor for handling Room db
 queries

---
 .../simplemobiletools/gallery/databases/GalleryDatabase.kt | 4 +++-
 .../com/simplemobiletools/gallery/objects/MyExecutor.kt    | 7 +++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 app/src/main/kotlin/com/simplemobiletools/gallery/objects/MyExecutor.kt

diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/databases/GalleryDatabase.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/databases/GalleryDatabase.kt
index 0c94fb848..104a250cf 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/databases/GalleryDatabase.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/databases/GalleryDatabase.kt
@@ -1,9 +1,10 @@
 package com.simplemobiletools.gallery.databases
 
+import android.content.Context
 import androidx.room.Database
 import androidx.room.Room
 import androidx.room.RoomDatabase
-import android.content.Context
+import com.simplemobiletools.gallery.objects.MyExecutor
 import com.simplemobiletools.gallery.interfaces.DirectoryDao
 import com.simplemobiletools.gallery.interfaces.MediumDao
 import com.simplemobiletools.gallery.models.Directory
@@ -25,6 +26,7 @@ abstract class GalleryDatabase : RoomDatabase() {
                     if (db == null) {
                         db = Room.databaseBuilder(context.applicationContext, GalleryDatabase::class.java, "gallery.db")
                                 .fallbackToDestructiveMigration()
+                                .setQueryExecutor(MyExecutor.myExecutor)
                                 .build()
                         db!!.openHelper.setWriteAheadLoggingEnabled(true)
                     }
diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/objects/MyExecutor.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/objects/MyExecutor.kt
new file mode 100644
index 000000000..c4ff990a9
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/objects/MyExecutor.kt
@@ -0,0 +1,7 @@
+package com.simplemobiletools.gallery.objects
+
+import java.util.concurrent.Executors
+
+object MyExecutor {
+    val myExecutor = Executors.newSingleThreadExecutor()
+}