Database Accessor 2

DatabaseAccessor.swift

class DatabaseAccessor {
  static let sharedInstance = DatabaseAccessor()
  private init() {}

  // The instance of the SQLite database
  private var mainDB: FMDatabase?

  public func initializeDatabase() {
      let databasePath = (dirPath as NSString).appendingPathComponent("database.sqlite") as NSString
        
      // Assign the instanced database.
      mainDB = FMDatabase(path: databasePath as String)
  }

  public func closeDatabase() {
      mainDB?.close()
  }
}