我正在使用 Room 数据库来保存数据。我有两个 API,我需要从云中获取数据并使用 room 保存本地数据库。第一个 api 是用户列表,它正确地从云中获取并保存到数据库(房间)中。第二个 api 正在获取 ShopDetails。为此,我创建了以下课程:
ShopDetailsEntity.kt
@Entity(tableName = AppConstants.SHOP_DETAILS)
data class ShopDetailsEntity(
@PrimaryKey @ColumnInfo(name = AppConstants.COLUMN_SHOP_ID) var shopId: Long,
@ColumnInfo(name = AppConstants.COLUMN_COMPANY_ID) val companyId: Long,
@ColumnInfo(name = AppConstants.COLUMN_COMPANY_NAME) val companyName: String,
BaseDao.kt
@Dao
interface BaseDao<T> {
@Insert(onConflict = OnConflictStrategy.REPLACE)
suspend fun insert(data: T)
@Insert(onConflict = OnConflictStrategy.REPLACE)
suspend fun insert(data: List<T>)
@Update
suspend fun update(data: T)
@Delete
suspend fun delete(data: T)
}
IShopDetailDao.kt
@Dao
interface IShopDetailDao: BaseDao<ShopDetailsEntity> {
@Query("SELECT * FROM ${AppConstants.SHOP_DETAILS}")
suspend fun getAllShopDetails(): List<ShopDetailsEntity>
}
应用程序数据库.kt
@Database(
entities = [UserEntity::class],[ShopDetailsEntity::class],
version = AppConstants.DB_VERSION,
exportSchema = false
)
abstract class AppDatabase : RoomDatabase() {
abstract fun userProfileDao(): IUserProfileDao
abstract fun shopDetailDao(): IShopDetailDao
companion object {
@Volatile
private var instance: AppDatabase? = null
fun getDatabase(context: Context): AppDatabase =
instance ?: synchronized(this) {
instance ?: buildDatabase(context).also { instance = it }
}
private fun buildDatabase(context: Context) =
Room.databaseBuilder(
context.applicationContext, AppDatabase::class.java,
AppConstants.DB_NAME
)
.fallbackToDestructiveMigration()
.build()
}
}
当我运行时,出现以下错误: CollectionApp pp uild mp\kapt3\stubs\debu