👀 Views: 1 💬 Answers: 1 📅 Created: 2025-06-07

android room kotlin database sqlite Kotlin

I'm stuck trying to I'm currently working on an Android app using Room for database operations, and I've run into some issues when trying to manage transactions... I want to ensure that my database operations are atomic, but every time I try to perform a batch insert, I end up with a `SQLiteConstraintException`. I suspect that the transactions aren't being handled properly. Here's the code I have for inserting multiple items: ```kotlin val myDatabase = Room.databaseBuilder(context, MyDatabase::class.java, "my-database").build() val itemDao = myDatabase.itemDao() val items = listOf( Item(1, "Item 1"), Item(2, "Item 2"), Item(3, "Item 3") ) // Attempting to insert items in a transaction myDatabase.runInTransaction { itemDao.insertAll(items) } ``` However, I get the following behavior on the batch insert: ``` android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: items.id (code 1555) ``` I have checked that item IDs are unique before insertion, yet the behavior still occurs. I also tried to insert items one by one and that works fine, but it significantly reduces performance. I've tried wrapping the insertion logic inside a transaction as shown above, but it doesn't seem to resolve my scenario. Is there something I’m missing in the transaction management with Room? I want to leverage transactions correctly for better performance while ensuring data integrity. Any help would be greatly appreciated!