/
AppDatabase.kt
35 lines (28 loc) 路 1015 Bytes
/
AppDatabase.kt
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package dev.spikeysanju.expensetracker.data.local
import android.content.Context
import androidx.room.Database
import androidx.room.Room
import androidx.room.RoomDatabase
import dev.spikeysanju.expensetracker.model.Transaction
@Database(
entities = [Transaction::class],
version = 1,
exportSchema = false
)
abstract class AppDatabase : RoomDatabase() {
abstract fun getTransactionDao(): TransactionDao
companion object {
@Volatile
private var instance: AppDatabase? = null
private val LOCK = Any()
// Check for DB instance if not null then get or insert or else create new DB Instance
operator fun invoke(context: Context) = instance ?: synchronized(LOCK) {
instance ?: createDatabase(context).also { instance = it }
}
private fun createDatabase(context: Context) = Room.databaseBuilder(
context.applicationContext,
AppDatabase::class.java,
"transaction.db"
).build()
}
}