package com.miya.fastcashier.dao
import androidx.room.Database
import androidx.room.RoomDatabase
import androidx.room.Room
import com.miya.fastcashier.util.ContextUtils
import androidx.sqlite.db.SupportSQLiteDatabase
import androidx.room.migration.Migration
@Database(entities = [ViewPayOrderData::class], exportSchema = false, version = 2)
abstract class PayDatabase : RoomDatabase() {
abstract fun payDataDao(): PayDataDao
}
class DatabaseKeeper {
companion object {
private val DATABASE_NAME = "pay_data"
val payDatabase: PayDatabase by lazy(mode = LazyThreadSafetyMode.SYNCHRONIZED) {
Room.databaseBuilder(ContextUtils.getContext(), PayDatabase::class.java, DATABASE_NAME)
.addMigrations(MIGRATION_1_2)
.build()
}
val MIGRATION_1_2: Migration = object : Migration(1, 2) {
override fun migrate(database: SupportSQLiteDatabase) {
database.execSQL("alter table pay_data add userName Text")
}
}
}
}
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赵鹏翔 authored81a403da