LockObject (Command Interface)

Примечание.
В следующей версии Microsoft SQL Server эта возможность будет удалена. Не используйте ее при работе над новыми приложениями и как можно быстрее измените приложения, в которых она в настоящее время используется.

The LockObject method of the Command interface locks an object to prevent multiple users from concurrently changing the object.

Applies To: clsDatabaseCommand

Синтаксис

object.LockObject(ByVal LockType As OlapLockTypes, ByVal LockDescription As String)

Параметры

• object
  The object to lock.

• LockType
  One of the lock types of the OlapLockTypes enumeration. For more information, see OlapLockTypes.

• LockDescription
  A string that contains a description of the lock. This argument is available to other applications attempting to obtain a lock.

Замечания

Of the four types of locks defined by the OlapLockTypes enumeration, only olapLockRead and olapLockWrite apply to the Command interface.

Lock type	Applies to
olapLockRead	Applications can read the properties of the command object from the repository but cannot make changes until the lock is released (this includes the application that created the lock).
olapLockWrite	The application that created the lock can modify the object's properties and save them in the repository using the Update method. Other applications cannot read the properties of the object until the lock is released.

For more information about object locking, see LockObject.

Пример

The following example locks a command object so that it can be modified. It then unlocks the object and updates the repository information for that object.

'Assume a command object (dsoCmd) exists.
dsoCmd.LockObect OlapLockRead, "Updating command, please wait."
' (Insert code to change command object here.)
dsoCmd.Update
dsoCmd.UnlockObject

См. также

Справочник

Command Interface

Справка и поддержка

Получение помощи по SQL Server 2005